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root/OpenMD/trunk/src/applications/hydrodynamics/ApproximationModel.cpp
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Comparing trunk/src/applications/hydrodynamics/ApproximationModel.cpp (file contents):
Revision 1177 by xsun, Tue Aug 14 17:40:33 2007 UTC vs.
Revision 1322 by gezelter, Mon Nov 24 22:01:56 2008 UTC

# Line 145 | Line 145 | namespace oopse {
145          
146          Xiott += Cij;
147          Xiotr += U[i] * Cij;
148 <        //Xiorr += -U[i] * Cij * U[j] + (6 * viscosity * volume) * I;    
148 >        // uncorrected here.  Volume correction is added after we assemble Xiorr
149          Xiorr += -U[i] * Cij * U[j];
150        }
151      }
152 +
153 +    // add the volume correction
154 +    Xiorr += (6.0 * viscosity * volume) * I;    
155      
156 <    const RealType convertConstant = 6.023; //convert poise.angstrom to amu/fs
157 <    Xiott *= convertConstant;
158 <    Xiotr *= convertConstant;
156 <    Xiorr *= convertConstant;
157 <    
158 <    
156 >    Xiott *= OOPSEConstant::viscoConvert;
157 >    Xiotr *= OOPSEConstant::viscoConvert;
158 >    Xiorr *= OOPSEConstant::viscoConvert;
159      
160      Mat3x3d tmp;
161      Mat3x3d tmpInv;
# Line 203 | Line 203 | namespace oopse {
203      Dr6x6.getSubMatrix(0, 3, Drrt);
204      Dr6x6.getSubMatrix(3, 0, Drtr);
205      Dr6x6.getSubMatrix(3, 3, Drrr);
206 <    RealType kt = OOPSEConstant::kB * temperature ;
206 >    RealType kt = OOPSEConstant::kb * temperature ; // in kcal mol^-1
207      Drtt *= kt;
208      Drrt *= kt;
209      Drtr *= kt;
210      Drrr *= kt;
211 <    Xirtt *= OOPSEConstant::kb * temperature;
212 <    Xirtr *= OOPSEConstant::kb * temperature;
213 <    Xirrr *= OOPSEConstant::kb * temperature;
211 >    //Xirtt *= OOPSEConstant::kb * temperature;
212 >    //Xirtr *= OOPSEConstant::kb * temperature;
213 >    //Xirrr *= OOPSEConstant::kb * temperature;
214      
215      Mat6x6d Xi, D;
216  
# Line 318 | Line 318 | namespace oopse {
318              
319          Xitt += Cij;
320          Xitr += U[i] * Cij;
321 <            //Xirr += -U[i] * Cij * U[j] + (6 * viscosity * volume) * I;            
321 >        // uncorrected here.  Volume correction is added after we assemble Xiorr
322          Xirr += -U[i] * Cij * U[j];
323        }
324      }
325 <    
326 <    const RealType convertConstant = 6.023; //convert poise.angstrom to amu/fs
327 <    Xitt *= convertConstant;
328 <    Xitr *= convertConstant;
329 <    Xirr *= convertConstant;
325 >    // add the volume correction here:
326 >    Xirr += (6.0 * viscosity * volume) * I;    
327      
328 <    RealType kt = OOPSEConstant::kB * temperature;
328 >    Xitt *= OOPSEConstant::viscoConvert;
329 >    Xitr *= OOPSEConstant::viscoConvert;
330 >    Xirr *= OOPSEConstant::viscoConvert;
331      
332 +    RealType kt = OOPSEConstant::kb * temperature; // in kcal mol^-1
333 +    
334      Mat3x3d Dott; //translational diffusion tensor at arbitrary origin O
335      Mat3x3d Dorr; //rotational diffusion tensor at arbitrary origin O
336      Mat3x3d Dotr; //translation-rotation couplingl diffusion tensor at arbitrary origin O
# Line 422 | Line 423 | namespace oopse {
423      std::cout << "center of diffusion :" << std::endl;
424      std::cout << rod << std::endl;
425      std::cout << "diffusion tensor at center of diffusion " << std::endl;
426 <    std::cout << "translation(A^2/fs) :" << std::endl;
426 >    std::cout << "translation(A^2 / fs) :" << std::endl;
427      std::cout << Ddtt << std::endl;
428 <    std::cout << "translation-rotation(A^3/fs):" << std::endl;
428 >    std::cout << "translation-rotation(A / fs):" << std::endl;
429      std::cout << Ddtr << std::endl;
430 <    std::cout << "rotation(A^4/fs):" << std::endl;
430 >    std::cout << "rotation(fs^-1):" << std::endl;
431      std::cout << Ddrr << std::endl;
432  
433      std::cout << "resistance tensor at center of diffusion " << std::endl;
# Line 442 | Line 443 | namespace oopse {
443      Xid.getSubMatrix(3, 3, Xidrr);
444  
445      std::cout << Xidtt << std::endl;
446 <    std::cout << "rotation-translation (kcal*fs*mol^-1*Ang^-3):" << std::endl;
446 >    std::cout << "rotation-translation (kcal*fs*mol^-1*Ang^-1):" << std::endl;
447      std::cout << Xidrt << std::endl;
448 <    std::cout << "translation-rotation(kcal*fs*mol^-1*Ang^-3):" << std::endl;
448 >    std::cout << "translation-rotation(kcal*fs*mol^-1*Ang^-1):" << std::endl;
449      std::cout << Xidtr << std::endl;
450 <    std::cout << "rotation(kcal*fs*mol^-1*Ang^-4):" << std::endl;
450 >    std::cout << "rotation(kcal*fs*mol^-1):" << std::endl;
451      std::cout << Xidrr << std::endl;
452  
453      return true;

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