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root/OpenMD/branches/development/src/nonbonded/Electrostatic.cpp
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Comparing branches/development/src/nonbonded/Electrostatic.cpp (file contents):
Revision 1710 by gezelter, Fri May 18 21:44:02 2012 UTC vs.
Revision 1720 by gezelter, Thu May 24 01:48:29 2012 UTC

# Line 48 | Line 48
48   #include "utils/simError.h"
49   #include "types/NonBondedInteractionType.hpp"
50   #include "types/FixedChargeAdapter.hpp"
51 + #include "types/FluctuatingChargeAdapter.hpp"
52   #include "types/MultipoleAdapter.hpp"
53   #include "io/Globals.hpp"
54 + #include "nonbonded/SlaterIntegrals.hpp"
55 + #include "utils/PhysicalConstants.hpp"
56 +
57  
58   namespace OpenMD {
59    
# Line 285 | Line 289 | namespace OpenMD {
289  
290      if (fca.isFixedCharge()) {
291        electrostaticAtomData.is_Charge = true;
292 <      electrostaticAtomData.charge = fca.getCharge();
292 >      electrostaticAtomData.fixedCharge = fca.getCharge();
293      }
294  
295      MultipoleAdapter ma = MultipoleAdapter(atomType);
# Line 309 | Line 313 | namespace OpenMD {
313        }
314      }
315      
316 +    FluctuatingChargeAdapter fqa = FluctuatingChargeAdapter(atomType);
317  
318 +    if (fqa.isFluctuatingCharge()) {
319 +      electrostaticAtomData.is_Fluctuating = true;
320 +      electrostaticAtomData.electronegativity = fqa.getElectronegativity();
321 +      electrostaticAtomData.hardness = fqa.getHardness();
322 +      electrostaticAtomData.slaterN = fqa.getSlaterN();
323 +      electrostaticAtomData.slaterZeta = fqa.getSlaterZeta();
324 +    }
325 +
326      pair<map<int,AtomType*>::iterator,bool> ret;    
327      ret = ElectrostaticList.insert( pair<int,AtomType*>(atomType->getIdent(),
328                                                          atomType) );
# Line 322 | Line 335 | namespace OpenMD {
335        simError();        
336      }
337      
338 <    ElectrostaticMap[atomType] = electrostaticAtomData;    
338 >    ElectrostaticMap[atomType] = electrostaticAtomData;  
339 >
340 >    // Now, iterate over all known types and add to the mixing map:
341 >    
342 >    map<AtomType*, ElectrostaticAtomData>::iterator it;
343 >    for( it = ElectrostaticMap.begin(); it != ElectrostaticMap.end(); ++it) {
344 >      AtomType* atype2 = (*it).first;
345 >      ElectrostaticAtomData eaData2 = (*it).second;
346 >      if (eaData2.is_Fluctuating && electrostaticAtomData.is_Fluctuating) {
347 >        
348 >        RealType a = electrostaticAtomData.slaterZeta;
349 >        RealType b = eaData2.slaterZeta;
350 >        int m = electrostaticAtomData.slaterN;
351 >        int n = eaData2.slaterN;
352 >
353 >        // Create the spline of the coulombic integral for s-type
354 >        // Slater orbitals.  Add a 2 angstrom safety window to deal
355 >        // with cutoffGroups that have charged atoms longer than the
356 >        // cutoffRadius away from each other.
357 >
358 >        RealType rval;
359 >        RealType dr = (cutoffRadius_ + 2.0) / RealType(np_ - 1);
360 >        vector<RealType> rvals;
361 >        vector<RealType> J1vals;
362 >        vector<RealType> J2vals;
363 >        for (int i = 0; i < np_; i++) {
364 >          rval = RealType(i) * dr;
365 >          rvals.push_back(rval);
366 >          J1vals.push_back( sSTOCoulInt( a, b, m, n, rval * PhysicalConstants::angstromsToBohr ) );
367 >          J2vals.push_back( sSTOCoulInt( b, a, n, m, rval * PhysicalConstants::angstromsToBohr ) );
368 >        }
369 >
370 >        CubicSpline* J1 = new CubicSpline();
371 >        J1->addPoints(rvals, J1vals);
372 >        CubicSpline* J2 = new CubicSpline();
373 >        J2->addPoints(rvals, J2vals);
374 >        
375 >        pair<AtomType*, AtomType*> key1, key2;
376 >        key1 = make_pair(atomType, atype2);
377 >        key2 = make_pair(atype2, atomType);
378 >        
379 >        Jij[key1] = J1;
380 >        Jij[key2] = J2;
381 >      }
382 >    }
383 >
384      return;
385    }
386    
# Line 413 | Line 471 | namespace OpenMD {
471      bool j_is_Quadrupole = data2.is_Quadrupole;
472      
473      if (i_is_Charge) {
474 <      q_i = data1.charge;
474 >      q_i = data1.fixedCharge;
475        if (idat.excluded) {
476          *(idat.skippedCharge2) += q_i;
477        }
# Line 451 | Line 509 | namespace OpenMD {
509      }
510  
511      if (j_is_Charge) {
512 <      q_j = data2.charge;
512 >      q_j = data2.fixedCharge;
513        if (idat.excluded) {
514          *(idat.skippedCharge1) += q_j;
515        }
# Line 964 | Line 1022 | namespace OpenMD {
1022        }
1023      } else if (summationMethod_ == esm_SHIFTED_FORCE || summationMethod_ == esm_SHIFTED_POTENTIAL) {
1024        if (i_is_Charge) {        
1025 <        chg1 = data.charge;
1025 >        chg1 = data.fixedCharge;
1026          if (screeningMethod_ == DAMPED) {
1027            self = - 0.5 * (c1c_ + alphaPi_) * chg1 * (chg1 + *(sdat.skippedCharge)) * pre11_;
1028          } else {        

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