ATC version 2.0, date: Aug7

git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@10561 f3b2605a-c512-4ea7-a41b-209d697bcdaa
2013-08-07 21:34:54 +00:00
parent fafff431e9
commit 7855ef6dda
195 changed files with 83477 additions and 4499 deletions
--- a/lib/atc/WeakEquationPoisson.cpp
+++ b/lib/atc/WeakEquationPoisson.cpp
@ -0,0 +1,95 @@
+#include "WeakEquationPoisson.h"
+#include "Material.h"
+#include <string>
+#include <iostream>
+#include <fstream>
+
+namespace ATC {
+
+//==============================================================
+//  Class WeakEquationPoisson
+//==============================================================
+
+// R = B^T flux       + N source = 0
+// 0 = B^T perm B phi - N rho_+ 
+
+  
+//--------------------------------------------------------------
+//  Constructor
+//--------------------------------------------------------------
+WeakEquationPoisson::WeakEquationPoisson()
+  : WeakEquation(STATIC_PDE,ELECTRIC_POTENTIAL,1)
+{}
+
+//---------------------------------------------------------------------
+void WeakEquationPoisson::B_integrand(
+  const FIELD_MATS &fields,
+  const GRAD_FIELD_MATS &grad_fields,
+  const Material * material,
+  DENS_MAT_VEC &flux) const
+{
+  // flux = - perm D_x phi
+  material->electric_displacement(fields, grad_fields, flux);
+  flux[0] *= -1;
+  flux[1] *= -1;
+  flux[2] *= -1;
+}
+
+//---------------------------------------------------------------------
+void WeakEquationPoisson::BB_tangent_coefficients(
+  const FieldName field,
+  const FIELD_MATS &fields,
+  const Material* material,
+  DENS_MAT &coefs) const
+{
+  material->permittivity(fields,coefs); // convention evalues (B^T perm B) > 0
+}
+
+//---------------------------------------------------------------------
+bool WeakEquationPoisson::N_integrand(
+  const FIELD_MATS &fields,
+  const GRAD_FIELD_MATS &grad_fields,
+  const Material * material,
+  DENS_MAT &flux) const
+{
+  return material->electron_charge_density(fields,flux); // - N rho_+ = N n
+}
+
+//---------------------------------------------------------------------
+void WeakEquationPoisson::NN_tangent_coefficients(
+  const FieldName field,
+  const FIELD_MATS &fields,
+  const Material* material,
+  DENS_MAT &coefs) const
+{
+  material->D_electron_charge_density(ELECTRIC_POTENTIAL,fields,coefs);
+}
+
+//==============================================================
+//  Class WeakEquationPoissonConstantRHS
+//==============================================================
+
+//--------------------------------------------------------------
+//  Constructor
+//--------------------------------------------------------------
+WeakEquationPoissonConstantRHS::WeakEquationPoissonConstantRHS()
+  : WeakEquationPoisson()
+{}
+
+//---------------------------------------------------------------------
+bool WeakEquationPoissonConstantRHS::N_integrand(
+  const FIELD_MATS &fields,
+  const GRAD_FIELD_MATS &grad_fields,
+  const Material * material,
+  DENS_MAT &flux) const
+
+{
+  FIELD_MATS::const_iterator   nIter = fields.find(ELECTRON_DENSITY);
+  if (nIter != fields.end()) {
+    const DENS_MAT &  n = nIter->second;
+    flux = -1.0*n; 
+    return true;
+  }
+  return false;
+}
+};