applications/hydrodynamics/ApproximationModel.cpp

/*
 * Copyright (c) 2005 The University of Notre Dame. All Rights Reserved.
 *
 * The University of Notre Dame grants you ("Licensee") a
 * non-exclusive, royalty free, license to use, modify and
 * redistribute this software in source and binary code form, provided
 * that the following conditions are met:
 *
 * 1. Acknowledgement of the program authors must be made in any
 *    publication of scientific results based in part on use of the
 *    program.  An acceptable form of acknowledgement is citation of
 *    the article in which the program was described (Matthew
 *    A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
 *    J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
 *    Parallel Simulation Engine for Molecular Dynamics,"
 *    J. Comput. Chem. 26, pp. 252-271 (2005))
 *
 * 2. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 3. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the
 *    distribution.
 *
 * This software is provided "AS IS," without a warranty of any
 * kind. All express or implied conditions, representations and
 * warranties, including any implied warranty of merchantability,
 * fitness for a particular purpose or non-infringement, are hereby
 * excluded.  The University of Notre Dame and its licensors shall not
 * be liable for any damages suffered by licensee as a result of
 * using, modifying or distributing the software or its
 * derivatives. In no event will the University of Notre Dame or its
 * licensors be liable for any lost revenue, profit or data, or for
 * direct, indirect, special, consequential, incidental or punitive
 * damages, however caused and regardless of the theory of liability,
 * arising out of the use of or inability to use software, even if the
 * University of Notre Dame has been advised of the possibility of
 * such damages.
 */

#include "applications/hydrodynamics/ApproximationModel.hpp" 
#include "math/LU.hpp"
#include "math/DynamicRectMatrix.hpp"
#include "math/SquareMatrix3.hpp"
#include "utils/OOPSEConstant.hpp"
#include "applications/hydrodynamics/Spheric.hpp"
#include "applications/hydrodynamics/Ellipsoid.hpp"
#include "applications/hydrodynamics/CompositeShape.hpp"
#include "math/LU.hpp"
#include "utils/simError.h"
namespace oopse {
/**
 * Reference:
 * Beatriz Carrasco and Jose Gracia de la Torre, Hydrodynamic Properties of Rigid Particles:
 * Comparison of Different Modeling and Computational Procedures. 
 * Biophysical Journal, 75(6), 3044, 1999
 */

ApproximationModel::ApproximationModel(StuntDouble* sd, SimInfo* info): HydrodynamicsModel(sd, info){

}

bool ApproximationModel::calcHydroProps(Spheric* spheric, double viscosity, double temperature) {
    return internalCalcHydroProps(static_cast<Shape*>(spheric), viscosity, temperature);
}

bool ApproximationModel::calcHydroProps(Ellipsoid* ellipsoid, double viscosity, double temperature) {
    return internalCalcHydroProps(static_cast<Shape*>(ellipsoid), viscosity, temperature);
}
bool ApproximationModel::calcHydroProps(CompositeShape* compositeShape, double viscosity, double temperature) {
    return internalCalcHydroProps(static_cast<Shape*>(compositeShape), viscosity, temperature);
}

void ApproximationModel::init() {
    if (!createBeads(beads_)) {
      sprintf(painCave.errMsg, "ApproximationModel::init() : Can not create beads\n");
      painCave.isFatal = 1;
      simError();        
    }

}

bool ApproximationModel::internalCalcHydroProps(Shape* shape, double viscosity, double temperature) {

    bool ret = true;
    HydroProps cr;
    HydroProps cd;
    calcHydroPropsAtCR(beads_, viscosity, temperature, cr);
    //calcHydroPropsAtCD(beads_, viscosity, temperature, cd);
    setCR(cr);
    setCD(cd);
    
    return true;    
}

bool ApproximationModel::calcHydroPropsAtCR(std::vector<BeadParam>& beads, double viscosity, double temperature, HydroProps& cr) {

    int nbeads = beads.size();
    DynamicRectMatrix<double> B(3*nbeads, 3*nbeads);
    DynamicRectMatrix<double> C(3*nbeads, 3*nbeads);
    Mat3x3d I;
    I(0, 0) = 1.0;
    I(1, 1) = 1.0;
    I(2, 2) = 1.0;
    
    for (std::size_t i = 0; i < nbeads; ++i) {
        for (std::size_t j = 0; j < nbeads; ++j) {
            Mat3x3d Tij;
            if (i != j ) {
                Vector3d Rij = beads[i].pos - beads[j].pos;
                double rij = Rij.length();
                double rij2 = rij * rij;
                double sumSigma2OverRij2 = ((beads[i].radius*beads[i].radius) + (beads[j].radius*beads[j].radius)) / rij2;                
                Mat3x3d tmpMat;
                tmpMat = outProduct(Rij, Rij) / rij2;
                double constant = 8.0 * NumericConstant::PI * viscosity * rij;
                Tij = ((1.0 + sumSigma2OverRij2/3.0) * I + (1.0 - sumSigma2OverRij2) * tmpMat ) / constant;
            }else {
                double constant = 1.0 / (6.0 * NumericConstant::PI * viscosity * beads[i].radius);
                Tij(0, 0) = constant;
                Tij(1, 1) = constant;
                Tij(2, 2) = constant;
            }
            B.setSubMatrix(i*3, j*3, Tij);
        }
    }

    //invert B Matrix
    invertMatrix(B, C);
    
    //prepare U Matrix relative to arbitrary origin O(0.0, 0.0, 0.0)
    std::vector<Mat3x3d> U;
    for (int i = 0; i < nbeads; ++i) {
        Mat3x3d currU;
        currU.setupSkewMat(beads[i].pos);
        U.push_back(currU);
    }
    
    //calculate Xi matrix at arbitrary origin O
    Mat3x3d Xiott;
    Mat3x3d Xiorr;
    Mat3x3d Xiotr;

    //calculate the total volume

    double volume = 0.0;
    for (std::vector<BeadParam>::iterator iter = beads.begin(); iter != beads.end(); ++iter) {
        volume += 4.0/3.0 * NumericConstant::PI * pow((*iter).radius,3);
    }
        
    for (std::size_t i = 0; i < nbeads; ++i) {
        for (std::size_t j = 0; j < nbeads; ++j) {
            Mat3x3d Cij;
            C.getSubMatrix(i*3, j*3, Cij);
            
            Xiott += Cij;
            Xiotr += U[i] * Cij;
            //Xiorr += -U[i] * Cij * U[j] + (6 * viscosity * volume) * I;    
            Xiorr += -U[i] * Cij * U[j]; 
        }
    }

    const double convertConstant = 6.023; //convert poise.angstrom to amu/fs
    Xiott *= convertConstant;
    Xiotr *= convertConstant;
    Xiorr *= convertConstant;
    

    Mat3x3d tmp;
    Mat3x3d tmpInv;
    Vector3d tmpVec;
    tmp(0, 0) = Xiott(1, 1) + Xiott(2, 2);
    tmp(0, 1) = - Xiott(0, 1);
    tmp(0, 2) = -Xiott(0, 2);
    tmp(1, 0) = -Xiott(0, 1);
    tmp(1, 1) = Xiott(0, 0)  + Xiott(2, 2);
    tmp(1, 2) = -Xiott(1, 2);
    tmp(2, 0) = -Xiott(0, 2);
    tmp(2, 1) = -Xiott(1, 2);
    tmp(2, 2) = Xiott(1, 1) + Xiott(0, 0);
    tmpVec[0] = Xiotr(2, 1) - Xiotr(1, 2);
    tmpVec[1] = Xiotr(0, 2) - Xiotr(2, 0);
    tmpVec[2] = Xiotr(1, 0) - Xiotr(0, 1);
    tmpInv = tmp.inverse();    
    Vector3d ror = tmpInv * tmpVec; //center of resistance
    Mat3x3d Uor;
    Uor.setupSkewMat(ror);
    
    Mat3x3d Xirtt;
    Mat3x3d Xirrr;
    Mat3x3d Xirtr;

    Xirtt = Xiott;
    Xirtr = (Xiotr - Uor * Xiott);
    Xirrr = Xiorr - Uor * Xiott * Uor + Xiotr * Uor - Uor * Xiotr.transpose();
    

    SquareMatrix<double,6> Xir6x6;
    SquareMatrix<double,6> Dr6x6;

    Xir6x6.setSubMatrix(0, 0, Xirtt);
    Xir6x6.setSubMatrix(0, 3, Xirtr.transpose());
    Xir6x6.setSubMatrix(3, 0, Xirtr);
    Xir6x6.setSubMatrix(3, 3, Xirrr);

    invertMatrix(Xir6x6, Dr6x6);
    Mat3x3d Drtt;
    Mat3x3d Drtr;
    Mat3x3d Drrt;
    Mat3x3d Drrr;
    Dr6x6.getSubMatrix(0, 0, Drtt);
    Dr6x6.getSubMatrix(0, 3, Drrt);
    Dr6x6.getSubMatrix(3, 0, Drtr);
    Dr6x6.getSubMatrix(3, 3, Drrr);
    double kt = OOPSEConstant::kB * temperature ;
    Drtt *= kt;
    Drrt *= kt;
    Drtr *= kt;
    Drrr *= kt;
    Xirtt *= OOPSEConstant::kb * temperature;
    Xirtr *= OOPSEConstant::kb * temperature;
    Xirrr *= OOPSEConstant::kb * temperature;
    

    cr.center = ror;
    cr.Xi.setSubMatrix(0, 0, Xirtt);
    cr.Xi.setSubMatrix(0, 3, Xirtr);
    cr.Xi.setSubMatrix(3, 0, Xirtr);
    cr.Xi.setSubMatrix(3, 3, Xirrr);
    cr.D.setSubMatrix(0, 0, Drtt);
    cr.D.setSubMatrix(0, 3, Drrt);
    cr.D.setSubMatrix(3, 0, Drtr);
    cr.D.setSubMatrix(3, 3, Drrr);    
    
    std::cout << "-----------------------------------------\n";
    std::cout << "center of resistance :" << std::endl;
    std::cout << ror << std::endl;
    std::cout << "resistant tensor at center of resistance" << std::endl;
    std::cout << "translation:" << std::endl;
    std::cout << Xirtt << std::endl;
    std::cout << "translation-rotation:" << std::endl;
    std::cout << Xirtr << std::endl;
    std::cout << "rotation:" << std::endl;
    std::cout << Xirrr << std::endl; 
    std::cout << "diffusion tensor at center of resistance" << std::endl;
    std::cout << "translation:" << std::endl;
    std::cout << Drtt << std::endl;
    std::cout << "rotation-translation:" << std::endl;
    std::cout << Drrt << std::endl;
    std::cout << "translation-rotation:" << std::endl;
    std::cout << Drtr << std::endl;
    std::cout << "rotation:" << std::endl;
    std::cout << Drrr << std::endl;    
    std::cout << "-----------------------------------------\n";

    return true;
}

bool ApproximationModel::calcHydroPropsAtCD(std::vector<BeadParam>& beads, double viscosity, double temperature, HydroProps& cr) {

    int nbeads = beads.size();
    DynamicRectMatrix<double> B(3*nbeads, 3*nbeads);
    DynamicRectMatrix<double> C(3*nbeads, 3*nbeads);
    Mat3x3d I;
    I(0, 0) = 1.0;
    I(1, 1) = 1.0;
    I(2, 2) = 1.0;
    
    for (std::size_t i = 0; i < nbeads; ++i) {
        for (std::size_t j = 0; j < nbeads; ++j) {
            Mat3x3d Tij;
            if (i != j ) {
                Vector3d Rij = beads[i].pos - beads[j].pos;
                double rij = Rij.length();
                double rij2 = rij * rij;
                double sumSigma2OverRij2 = ((beads[i].radius*beads[i].radius) + (beads[j].radius*beads[j].radius)) / rij2;                
                Mat3x3d tmpMat;
                tmpMat = outProduct(Rij, Rij) / rij2;
                double constant = 8.0 * NumericConstant::PI * viscosity * rij;
                Tij = ((1.0 + sumSigma2OverRij2/3.0) * I + (1.0 - sumSigma2OverRij2) * tmpMat ) / constant;
            }else {
                double constant = 1.0 / (6.0 * NumericConstant::PI * viscosity * beads[i].radius);
                Tij(0, 0) = constant;
                Tij(1, 1) = constant;
                Tij(2, 2) = constant;
            }
            B.setSubMatrix(i*3, j*3, Tij);
        }
    }

    //invert B Matrix
    invertMatrix(B, C);

    //prepare U Matrix relative to arbitrary origin O(0.0, 0.0, 0.0)
    std::vector<Mat3x3d> U;
    for (int i = 0; i < nbeads; ++i) {
        Mat3x3d currU;
        currU.setupSkewMat(beads[i].pos);
        U.push_back(currU);
    }
    
    //calculate Xi matrix at arbitrary origin O
    Mat3x3d Xitt;
    Mat3x3d Xirr;
    Mat3x3d Xitr;

    //calculate the total volume

    double volume = 0.0;
    for (std::vector<BeadParam>::iterator iter = beads.begin(); iter != beads.end(); ++iter) {
        volume += 4.0/3.0 * NumericConstant::PI * pow((*iter).radius,3);
    }
        
    for (std::size_t i = 0; i < nbeads; ++i) {
        for (std::size_t j = 0; j < nbeads; ++j) {
            Mat3x3d Cij;
            C.getSubMatrix(i*3, j*3, Cij);
            
            Xitt += Cij;
            Xitr += U[i] * Cij;
            //Xirr += -U[i] * Cij * U[j] + (6 * viscosity * volume) * I;            
            Xirr += -U[i] * Cij * U[j];
        }
    }

    const double convertConstant = 6.023; //convert poise.angstrom to amu/fs
    Xitt *= convertConstant;
    Xitr *= convertConstant;
    Xirr *= convertConstant;

    double kt = OOPSEConstant::kB * temperature;

    Mat3x3d Dott; //translational diffusion tensor at arbitrary origin O
    Mat3x3d Dorr; //rotational diffusion tensor at arbitrary origin O
    Mat3x3d Dotr; //translation-rotation couplingl diffusion tensor at arbitrary origin O

    const static Mat3x3d zeroMat(0.0);
    
    Mat3x3d XittInv(0.0);
    XittInv = Xitt.inverse();
    
    Mat3x3d XirrInv;
    XirrInv = Xirr.inverse();

    Mat3x3d tmp;
    Mat3x3d tmpInv;
    tmp = Xitt - Xitr.transpose() * XirrInv * Xitr;
    tmpInv = tmp.inverse();

    Dott = tmpInv;
    Dotr = -XirrInv * Xitr * tmpInv;
    
    tmp = Xirr - Xitr * XittInv * Xitr.transpose();    
    tmpInv = tmp.inverse();
    
    Dorr = tmpInv;

    //calculate center of diffusion
    tmp(0, 0) = Dorr(1, 1) + Dorr(2, 2);
    tmp(0, 1) = - Dorr(0, 1);
    tmp(0, 2) = -Dorr(0, 2);
    tmp(1, 0) = -Dorr(0, 1);
    tmp(1, 1) = Dorr(0, 0)  + Dorr(2, 2);
    tmp(1, 2) = -Dorr(1, 2);
    tmp(2, 0) = -Dorr(0, 2);
    tmp(2, 1) = -Dorr(1, 2);
    tmp(2, 2) = Dorr(1, 1) + Dorr(0, 0);

    Vector3d tmpVec;
    tmpVec[0] = Dotr(1, 2) - Dotr(2, 1);
    tmpVec[1] = Dotr(2, 0) - Dotr(0, 2);
    tmpVec[2] = Dotr(0, 1) - Dotr(1, 0);

    tmpInv = tmp.inverse();
    
    Vector3d rod = tmpInv * tmpVec;

    //calculate Diffusion Tensor at center of diffusion
    Mat3x3d Uod;
    Uod.setupSkewMat(rod);
    
    Mat3x3d Ddtt; //translational diffusion tensor at diffusion center
    Mat3x3d Ddtr; //rotational diffusion tensor at diffusion center
    Mat3x3d Ddrr; //translation-rotation couplingl diffusion tensor at diffusion tensor
    
    Ddtt = Dott - Uod * Dorr * Uod + Dotr.transpose() * Uod - Uod * Dotr;
    Ddrr = Dorr;
    Ddtr = Dotr + Dorr * Uod;

    SquareMatrix<double, 6> Dd;
    Dd.setSubMatrix(0, 0, Ddtt);
    Dd.setSubMatrix(0, 3, Ddtr.transpose());
    Dd.setSubMatrix(3, 0, Ddtr);
    Dd.setSubMatrix(3, 3, Ddrr);    
    SquareMatrix<double, 6> Xid;
    Ddtt *= kt;
    Ddtr *=kt;
    Ddrr *= kt;
    invertMatrix(Dd, Xid);


    //Xidtt in units of kcal*fs*mol^-1*Ang^-2
    //Xid /= OOPSEConstant::energyConvert;
    Xid *= OOPSEConstant::kb * temperature;

    cr.center = rod;
    cr.D.setSubMatrix(0, 0, Ddtt);
    cr.D.setSubMatrix(0, 3, Ddtr);
    cr.D.setSubMatrix(3, 0, Ddtr);
    cr.D.setSubMatrix(3, 3, Ddrr);
    cr.Xi = Xid;

    std::cout << "viscosity = " << viscosity << std::endl;
    std::cout << "temperature = " << temperature << std::endl;
    std::cout << "center of diffusion :" << std::endl;
    std::cout << rod << std::endl;
    std::cout << "diffusion tensor at center of diffusion " << std::endl;
    std::cout << "translation(A^2/fs) :" << std::endl;
    std::cout << Ddtt << std::endl;
    std::cout << "translation-rotation(A^3/fs):" << std::endl;
    std::cout << Ddtr << std::endl;
    std::cout << "rotation(A^4/fs):" << std::endl;
    std::cout << Ddrr << std::endl;

    std::cout << "resistance tensor at center of diffusion " << std::endl;
    std::cout << "translation(kcal*fs*mol^-1*Ang^-2) :" << std::endl;

    Mat3x3d Xidtt;
    Mat3x3d Xidrt;
    Mat3x3d Xidtr;
    Mat3x3d Xidrr;
    Xid.getSubMatrix(0, 0, Xidtt);
    Xid.getSubMatrix(0, 3, Xidrt);
    Xid.getSubMatrix(3, 0, Xidtr);
    Xid.getSubMatrix(3, 3, Xidrr);

    std::cout << Xidtt << std::endl;
    std::cout << "rotation-translation (kcal*fs*mol^-1*Ang^-3):" << std::endl;
    std::cout << Xidrt << std::endl;
    std::cout << "translation-rotation(kcal*fs*mol^-1*Ang^-3):" << std::endl;
    std::cout << Xidtr << std::endl;
    std::cout << "rotation(kcal*fs*mol^-1*Ang^-4):" << std::endl;
    std::cout << Xidrr << std::endl;

    return true;
      
}


void ApproximationModel::writeBeads(std::ostream& os) {
    std::vector<BeadParam>::iterator iter;
    os << beads_.size() << std::endl;
    os << "Generated by Hydro" << std::endl;
    for (iter = beads_.begin(); iter != beads_.end(); ++iter) {
        os << iter->atomName << "\t" << iter->pos[0] << "\t" << iter->pos[1] << "\t" << iter->pos[2] << std::endl;
    }

}


}
Revision:	2749
Committed:	Wed May 10 01:44:48 2006 UTC (18 years, 3 months ago) by tim
File size:	15983 byte(s)
Log Message:	adding a gay-berne switch to Dump2XYZ
#	User	Rev	Content
1	tim	2634	/*
2			* Copyright (c) 2005 The University of Notre Dame. All Rights Reserved.
3			*
4			* The University of Notre Dame grants you ("Licensee") a
5			* non-exclusive, royalty free, license to use, modify and
6			* redistribute this software in source and binary code form, provided
7			* that the following conditions are met:
8			*
9			* 1. Acknowledgement of the program authors must be made in any
10			* publication of scientific results based in part on use of the
11			* program. An acceptable form of acknowledgement is citation of
12			* the article in which the program was described (Matthew
13			* A. Meineke, Charles F. Vardeman II, Teng Lin, Christopher
14			* J. Fennell and J. Daniel Gezelter, "OOPSE: An Object-Oriented
15			* Parallel Simulation Engine for Molecular Dynamics,"
16			* J. Comput. Chem. 26, pp. 252-271 (2005))
17			*
18			* 2. Redistributions of source code must retain the above copyright
19			* notice, this list of conditions and the following disclaimer.
20			*
21			* 3. Redistributions in binary form must reproduce the above copyright
22			* notice, this list of conditions and the following disclaimer in the
23			* documentation and/or other materials provided with the
24			* distribution.
25			*
26			* This software is provided "AS IS," without a warranty of any
27			* kind. All express or implied conditions, representations and
28			* warranties, including any implied warranty of merchantability,
29			* fitness for a particular purpose or non-infringement, are hereby
30			* excluded. The University of Notre Dame and its licensors shall not
31			* be liable for any damages suffered by licensee as a result of
32			* using, modifying or distributing the software or its
33			* derivatives. In no event will the University of Notre Dame or its
34			* licensors be liable for any lost revenue, profit or data, or for
35			* direct, indirect, special, consequential, incidental or punitive
36			* damages, however caused and regardless of the theory of liability,
37			* arising out of the use of or inability to use software, even if the
38			* University of Notre Dame has been advised of the possibility of
39			* such damages.
40			*/
41
42			#include "applications/hydrodynamics/ApproximationModel.hpp"
43			#include "math/LU.hpp"
44			#include "math/DynamicRectMatrix.hpp"
45			#include "math/SquareMatrix3.hpp"
46			#include "utils/OOPSEConstant.hpp"
47			#include "applications/hydrodynamics/Spheric.hpp"
48			#include "applications/hydrodynamics/Ellipsoid.hpp"
49			#include "applications/hydrodynamics/CompositeShape.hpp"
50			#include "math/LU.hpp"
51	tim	2675	#include "utils/simError.h"
52	tim	2634	namespace oopse {
53			/**
54			* Reference:
55			* Beatriz Carrasco and Jose Gracia de la Torre, Hydrodynamic Properties of Rigid Particles:
56			* Comparison of Different Modeling and Computational Procedures.
57			* Biophysical Journal, 75(6), 3044, 1999
58			*/
59
60			ApproximationModel::ApproximationModel(StuntDouble* sd, SimInfo* info): HydrodynamicsModel(sd, info){
61
62			}
63
64			bool ApproximationModel::calcHydroProps(Spheric* spheric, double viscosity, double temperature) {
65			return internalCalcHydroProps(static_cast<Shape*>(spheric), viscosity, temperature);
66			}
67
68			bool ApproximationModel::calcHydroProps(Ellipsoid* ellipsoid, double viscosity, double temperature) {
69			return internalCalcHydroProps(static_cast<Shape*>(ellipsoid), viscosity, temperature);
70			}
71			bool ApproximationModel::calcHydroProps(CompositeShape* compositeShape, double viscosity, double temperature) {
72			return internalCalcHydroProps(static_cast<Shape*>(compositeShape), viscosity, temperature);
73			}
74
75	tim	2675	void ApproximationModel::init() {
76	tim	2634	if (!createBeads(beads_)) {
77	tim	2675	sprintf(painCave.errMsg, "ApproximationModel::init() : Can not create beads\n");
78			painCave.isFatal = 1;
79			simError();
80	tim	2634	}
81
82	tim	2675	}
83
84			bool ApproximationModel::internalCalcHydroProps(Shape* shape, double viscosity, double temperature) {
85
86	tim	2634	bool ret = true;
87			HydroProps cr;
88			HydroProps cd;
89			calcHydroPropsAtCR(beads_, viscosity, temperature, cr);
90	tim	2749	//calcHydroPropsAtCD(beads_, viscosity, temperature, cd);
91	tim	2634	setCR(cr);
92			setCD(cd);
93
94			return true;
95			}
96
97			bool ApproximationModel::calcHydroPropsAtCR(std::vector<BeadParam>& beads, double viscosity, double temperature, HydroProps& cr) {
98
99			int nbeads = beads.size();
100			DynamicRectMatrix<double> B(3nbeads, 3nbeads);
101			DynamicRectMatrix<double> C(3nbeads, 3nbeads);
102			Mat3x3d I;
103			I(0, 0) = 1.0;
104			I(1, 1) = 1.0;
105			I(2, 2) = 1.0;
106
107			for (std::size_t i = 0; i < nbeads; ++i) {
108			for (std::size_t j = 0; j < nbeads; ++j) {
109			Mat3x3d Tij;
110			if (i != j ) {
111			Vector3d Rij = beads[i].pos - beads[j].pos;
112			double rij = Rij.length();
113			double rij2 = rij * rij;
114	tim	2650	double sumSigma2OverRij2 = ((beads[i].radiusbeads[i].radius) + (beads[j].radiusbeads[j].radius)) / rij2;
115	tim	2634	Mat3x3d tmpMat;
116			tmpMat = outProduct(Rij, Rij) / rij2;
117			double constant = 8.0 * NumericConstant::PI * viscosity * rij;
118			Tij = ((1.0 + sumSigma2OverRij2/3.0) * I + (1.0 - sumSigma2OverRij2) * tmpMat ) / constant;
119			}else {
120			double constant = 1.0 / (6.0 * NumericConstant::PI * viscosity * beads[i].radius);
121			Tij(0, 0) = constant;
122			Tij(1, 1) = constant;
123			Tij(2, 2) = constant;
124			}
125			B.setSubMatrix(i3, j3, Tij);
126			}
127			}
128
129			//invert B Matrix
130			invertMatrix(B, C);
131	tim	2650
132	tim	2634	//prepare U Matrix relative to arbitrary origin O(0.0, 0.0, 0.0)
133			std::vector<Mat3x3d> U;
134			for (int i = 0; i < nbeads; ++i) {
135			Mat3x3d currU;
136			currU.setupSkewMat(beads[i].pos);
137			U.push_back(currU);
138			}
139
140			//calculate Xi matrix at arbitrary origin O
141			Mat3x3d Xiott;
142			Mat3x3d Xiorr;
143			Mat3x3d Xiotr;
144
145			//calculate the total volume
146
147			double volume = 0.0;
148			for (std::vector<BeadParam>::iterator iter = beads.begin(); iter != beads.end(); ++iter) {
149			volume += 4.0/3.0 * NumericConstant::PI * pow((*iter).radius,3);
150			}
151
152			for (std::size_t i = 0; i < nbeads; ++i) {
153			for (std::size_t j = 0; j < nbeads; ++j) {
154			Mat3x3d Cij;
155			C.getSubMatrix(i3, j3, Cij);
156
157			Xiott += Cij;
158			Xiotr += U[i] * Cij;
159	tim	2749	//Xiorr += -U[i] * Cij * U[j] + (6 * viscosity * volume) * I;
160			Xiorr += -U[i] * Cij * U[j];
161	tim	2634	}
162			}
163
164			const double convertConstant = 6.023; //convert poise.angstrom to amu/fs
165			Xiott *= convertConstant;
166			Xiotr *= convertConstant;
167			Xiorr *= convertConstant;
168
169
170
171			Mat3x3d tmp;
172			Mat3x3d tmpInv;
173			Vector3d tmpVec;
174			tmp(0, 0) = Xiott(1, 1) + Xiott(2, 2);
175			tmp(0, 1) = - Xiott(0, 1);
176			tmp(0, 2) = -Xiott(0, 2);
177			tmp(1, 0) = -Xiott(0, 1);
178			tmp(1, 1) = Xiott(0, 0) + Xiott(2, 2);
179			tmp(1, 2) = -Xiott(1, 2);
180			tmp(2, 0) = -Xiott(0, 2);
181			tmp(2, 1) = -Xiott(1, 2);
182			tmp(2, 2) = Xiott(1, 1) + Xiott(0, 0);
183			tmpVec[0] = Xiotr(2, 1) - Xiotr(1, 2);
184			tmpVec[1] = Xiotr(0, 2) - Xiotr(2, 0);
185			tmpVec[2] = Xiotr(1, 0) - Xiotr(0, 1);
186			tmpInv = tmp.inverse();
187			Vector3d ror = tmpInv * tmpVec; //center of resistance
188			Mat3x3d Uor;
189			Uor.setupSkewMat(ror);
190
191			Mat3x3d Xirtt;
192			Mat3x3d Xirrr;
193			Mat3x3d Xirtr;
194
195			Xirtt = Xiott;
196			Xirtr = (Xiotr - Uor * Xiott);
197			Xirrr = Xiorr - Uor * Xiott * Uor + Xiotr * Uor - Uor * Xiotr.transpose();
198
199
200			SquareMatrix<double,6> Xir6x6;
201			SquareMatrix<double,6> Dr6x6;
202
203			Xir6x6.setSubMatrix(0, 0, Xirtt);
204			Xir6x6.setSubMatrix(0, 3, Xirtr.transpose());
205			Xir6x6.setSubMatrix(3, 0, Xirtr);
206			Xir6x6.setSubMatrix(3, 3, Xirrr);
207
208			invertMatrix(Xir6x6, Dr6x6);
209			Mat3x3d Drtt;
210			Mat3x3d Drtr;
211			Mat3x3d Drrt;
212			Mat3x3d Drrr;
213			Dr6x6.getSubMatrix(0, 0, Drtt);
214			Dr6x6.getSubMatrix(0, 3, Drrt);
215			Dr6x6.getSubMatrix(3, 0, Drtr);
216			Dr6x6.getSubMatrix(3, 3, Drrr);
217			double kt = OOPSEConstant::kB * temperature ;
218			Drtt *= kt;
219			Drrt *= kt;
220			Drtr *= kt;
221			Drrr *= kt;
222			Xirtt = OOPSEConstant::kb temperature;
223			Xirtr = OOPSEConstant::kb temperature;
224			Xirrr = OOPSEConstant::kb temperature;
225
226
227			cr.center = ror;
228			cr.Xi.setSubMatrix(0, 0, Xirtt);
229			cr.Xi.setSubMatrix(0, 3, Xirtr);
230			cr.Xi.setSubMatrix(3, 0, Xirtr);
231			cr.Xi.setSubMatrix(3, 3, Xirrr);
232			cr.D.setSubMatrix(0, 0, Drtt);
233			cr.D.setSubMatrix(0, 3, Drrt);
234			cr.D.setSubMatrix(3, 0, Drtr);
235			cr.D.setSubMatrix(3, 3, Drrr);
236
237			std::cout << "-----------------------------------------\n";
238			std::cout << "center of resistance :" << std::endl;
239			std::cout << ror << std::endl;
240			std::cout << "resistant tensor at center of resistance" << std::endl;
241			std::cout << "translation:" << std::endl;
242			std::cout << Xirtt << std::endl;
243			std::cout << "translation-rotation:" << std::endl;
244			std::cout << Xirtr << std::endl;
245			std::cout << "rotation:" << std::endl;
246			std::cout << Xirrr << std::endl;
247			std::cout << "diffusion tensor at center of resistance" << std::endl;
248			std::cout << "translation:" << std::endl;
249			std::cout << Drtt << std::endl;
250			std::cout << "rotation-translation:" << std::endl;
251			std::cout << Drrt << std::endl;
252			std::cout << "translation-rotation:" << std::endl;
253			std::cout << Drtr << std::endl;
254			std::cout << "rotation:" << std::endl;
255			std::cout << Drrr << std::endl;
256			std::cout << "-----------------------------------------\n";
257
258			return true;
259			}
260
261			bool ApproximationModel::calcHydroPropsAtCD(std::vector<BeadParam>& beads, double viscosity, double temperature, HydroProps& cr) {
262
263			int nbeads = beads.size();
264			DynamicRectMatrix<double> B(3nbeads, 3nbeads);
265			DynamicRectMatrix<double> C(3nbeads, 3nbeads);
266			Mat3x3d I;
267			I(0, 0) = 1.0;
268			I(1, 1) = 1.0;
269			I(2, 2) = 1.0;
270
271			for (std::size_t i = 0; i < nbeads; ++i) {
272			for (std::size_t j = 0; j < nbeads; ++j) {
273			Mat3x3d Tij;
274			if (i != j ) {
275			Vector3d Rij = beads[i].pos - beads[j].pos;
276			double rij = Rij.length();
277			double rij2 = rij * rij;
278	tim	2650	double sumSigma2OverRij2 = ((beads[i].radiusbeads[i].radius) + (beads[j].radiusbeads[j].radius)) / rij2;
279	tim	2634	Mat3x3d tmpMat;
280			tmpMat = outProduct(Rij, Rij) / rij2;
281			double constant = 8.0 * NumericConstant::PI * viscosity * rij;
282			Tij = ((1.0 + sumSigma2OverRij2/3.0) * I + (1.0 - sumSigma2OverRij2) * tmpMat ) / constant;
283			}else {
284			double constant = 1.0 / (6.0 * NumericConstant::PI * viscosity * beads[i].radius);
285			Tij(0, 0) = constant;
286			Tij(1, 1) = constant;
287			Tij(2, 2) = constant;
288			}
289			B.setSubMatrix(i3, j3, Tij);
290			}
291			}
292
293			//invert B Matrix
294			invertMatrix(B, C);
295
296			//prepare U Matrix relative to arbitrary origin O(0.0, 0.0, 0.0)
297			std::vector<Mat3x3d> U;
298			for (int i = 0; i < nbeads; ++i) {
299			Mat3x3d currU;
300			currU.setupSkewMat(beads[i].pos);
301			U.push_back(currU);
302			}
303
304			//calculate Xi matrix at arbitrary origin O
305			Mat3x3d Xitt;
306			Mat3x3d Xirr;
307			Mat3x3d Xitr;
308
309			//calculate the total volume
310
311			double volume = 0.0;
312			for (std::vector<BeadParam>::iterator iter = beads.begin(); iter != beads.end(); ++iter) {
313			volume += 4.0/3.0 * NumericConstant::PI * pow((*iter).radius,3);
314			}
315
316			for (std::size_t i = 0; i < nbeads; ++i) {
317			for (std::size_t j = 0; j < nbeads; ++j) {
318			Mat3x3d Cij;
319			C.getSubMatrix(i3, j3, Cij);
320
321			Xitt += Cij;
322			Xitr += U[i] * Cij;
323	tim	2749	//Xirr += -U[i] * Cij * U[j] + (6 * viscosity * volume) * I;
324			Xirr += -U[i] * Cij * U[j];
325	tim	2634	}
326			}
327
328			const double convertConstant = 6.023; //convert poise.angstrom to amu/fs
329			Xitt *= convertConstant;
330			Xitr *= convertConstant;
331			Xirr *= convertConstant;
332
333			double kt = OOPSEConstant::kB * temperature;
334
335			Mat3x3d Dott; //translational diffusion tensor at arbitrary origin O
336			Mat3x3d Dorr; //rotational diffusion tensor at arbitrary origin O
337			Mat3x3d Dotr; //translation-rotation couplingl diffusion tensor at arbitrary origin O
338
339			const static Mat3x3d zeroMat(0.0);
340
341			Mat3x3d XittInv(0.0);
342			XittInv = Xitt.inverse();
343
344			Mat3x3d XirrInv;
345			XirrInv = Xirr.inverse();
346
347			Mat3x3d tmp;
348			Mat3x3d tmpInv;
349			tmp = Xitt - Xitr.transpose() * XirrInv * Xitr;
350			tmpInv = tmp.inverse();
351
352			Dott = tmpInv;
353			Dotr = -XirrInv * Xitr * tmpInv;
354
355			tmp = Xirr - Xitr * XittInv * Xitr.transpose();
356			tmpInv = tmp.inverse();
357
358			Dorr = tmpInv;
359
360			//calculate center of diffusion
361			tmp(0, 0) = Dorr(1, 1) + Dorr(2, 2);
362			tmp(0, 1) = - Dorr(0, 1);
363			tmp(0, 2) = -Dorr(0, 2);
364			tmp(1, 0) = -Dorr(0, 1);
365			tmp(1, 1) = Dorr(0, 0) + Dorr(2, 2);
366			tmp(1, 2) = -Dorr(1, 2);
367			tmp(2, 0) = -Dorr(0, 2);
368			tmp(2, 1) = -Dorr(1, 2);
369			tmp(2, 2) = Dorr(1, 1) + Dorr(0, 0);
370
371			Vector3d tmpVec;
372			tmpVec[0] = Dotr(1, 2) - Dotr(2, 1);
373			tmpVec[1] = Dotr(2, 0) - Dotr(0, 2);
374			tmpVec[2] = Dotr(0, 1) - Dotr(1, 0);
375
376			tmpInv = tmp.inverse();
377
378			Vector3d rod = tmpInv * tmpVec;
379
380			//calculate Diffusion Tensor at center of diffusion
381			Mat3x3d Uod;
382			Uod.setupSkewMat(rod);
383
384			Mat3x3d Ddtt; //translational diffusion tensor at diffusion center
385			Mat3x3d Ddtr; //rotational diffusion tensor at diffusion center
386			Mat3x3d Ddrr; //translation-rotation couplingl diffusion tensor at diffusion tensor
387
388			Ddtt = Dott - Uod * Dorr * Uod + Dotr.transpose() * Uod - Uod * Dotr;
389			Ddrr = Dorr;
390			Ddtr = Dotr + Dorr * Uod;
391
392			SquareMatrix<double, 6> Dd;
393			Dd.setSubMatrix(0, 0, Ddtt);
394			Dd.setSubMatrix(0, 3, Ddtr.transpose());
395			Dd.setSubMatrix(3, 0, Ddtr);
396			Dd.setSubMatrix(3, 3, Ddrr);
397			SquareMatrix<double, 6> Xid;
398			Ddtt *= kt;
399			Ddtr *=kt;
400			Ddrr *= kt;
401			invertMatrix(Dd, Xid);
402
403
404
405			//Xidtt in units of kcalfsmol^-1*Ang^-2
406			//Xid /= OOPSEConstant::energyConvert;
407			Xid = OOPSEConstant::kb temperature;
408
409			cr.center = rod;
410			cr.D.setSubMatrix(0, 0, Ddtt);
411			cr.D.setSubMatrix(0, 3, Ddtr);
412			cr.D.setSubMatrix(3, 0, Ddtr);
413			cr.D.setSubMatrix(3, 3, Ddrr);
414			cr.Xi = Xid;
415
416			std::cout << "viscosity = " << viscosity << std::endl;
417			std::cout << "temperature = " << temperature << std::endl;
418			std::cout << "center of diffusion :" << std::endl;
419			std::cout << rod << std::endl;
420			std::cout << "diffusion tensor at center of diffusion " << std::endl;
421			std::cout << "translation(A^2/fs) :" << std::endl;
422			std::cout << Ddtt << std::endl;
423			std::cout << "translation-rotation(A^3/fs):" << std::endl;
424			std::cout << Ddtr << std::endl;
425			std::cout << "rotation(A^4/fs):" << std::endl;
426			std::cout << Ddrr << std::endl;
427
428			std::cout << "resistance tensor at center of diffusion " << std::endl;
429			std::cout << "translation(kcalfsmol^-1*Ang^-2) :" << std::endl;
430
431			Mat3x3d Xidtt;
432			Mat3x3d Xidrt;
433			Mat3x3d Xidtr;
434			Mat3x3d Xidrr;
435			Xid.getSubMatrix(0, 0, Xidtt);
436			Xid.getSubMatrix(0, 3, Xidrt);
437			Xid.getSubMatrix(3, 0, Xidtr);
438			Xid.getSubMatrix(3, 3, Xidrr);
439
440			std::cout << Xidtt << std::endl;
441			std::cout << "rotation-translation (kcalfsmol^-1*Ang^-3):" << std::endl;
442			std::cout << Xidrt << std::endl;
443			std::cout << "translation-rotation(kcalfsmol^-1*Ang^-3):" << std::endl;
444			std::cout << Xidtr << std::endl;
445			std::cout << "rotation(kcalfsmol^-1*Ang^-4):" << std::endl;
446			std::cout << Xidrr << std::endl;
447
448			return true;
449
450			}
451
452	tim	2665
453	tim	2634	void ApproximationModel::writeBeads(std::ostream& os) {
454			std::vector<BeadParam>::iterator iter;
455			os << beads_.size() << std::endl;
456			os << "Generated by Hydro" << std::endl;
457			for (iter = beads_.begin(); iter != beads_.end(); ++iter) {
458			os << iter->atomName << "\t" << iter->pos[0] << "\t" << iter->pos[1] << "\t" << iter->pos[2] << std::endl;
459			}
460
461			}
462
463
464	tim	2665
465	tim	2634	}