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initialize a new convergence scheme for Poisson solver

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This commit is contained in:
Rex Zhe Li
2021-09-09 15:48:25 +10:00
parent a2ed3fdb34
commit c74b803157
4 changed files with 102 additions and 24 deletions
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81
cpu/Poisson.cpp
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@@ -235,6 +235,87 @@ extern "C" void ScaLBL_D3Q7_Poisson_Init(int *Map, double *dist, double *Psi, in
}
}
extern "C" void ScaLBL_D3Q7_PoissonResidualError(int *neighborList, int *Map, double *ResidualError, double *Psi, double *Den_charge, double epsilon_LB,int strideY, int strideZ,int start, int finish){
int n,nn,ijk;
double psi;//electric potential
double rho_e;//local charge density
// neighbors of electric potential psi
double m1,m2,m4,m6,m8,m9,m10,m11,m12,m13,m14,m15,m16,m17,m18;
double m0,m3,m5,m7;
double psi_Laplacian;
double residual_error;
for (n=start; n<finish; n++){
//Load data
rho_e = Den_charge[n];
ijk=Map[n];
psi = Psi[ijk];
// COMPUTE THE COLOR GRADIENT
//........................................................................
//.................Read Phase Indicator Values............................
//........................................................................
nn = ijk-1; // neighbor index (get convention)
m1 = Psi[nn]; // get neighbor for phi - 1
//........................................................................
nn = ijk+1; // neighbor index (get convention)
m2 = Psi[nn]; // get neighbor for phi - 2
//........................................................................
nn = ijk-strideY; // neighbor index (get convention)
m3 = Psi[nn]; // get neighbor for phi - 3
//........................................................................
nn = ijk+strideY; // neighbor index (get convention)
m4 = Psi[nn]; // get neighbor for phi - 4
//........................................................................
nn = ijk-strideZ; // neighbor index (get convention)
m5 = Psi[nn]; // get neighbor for phi - 5
//........................................................................
nn = ijk+strideZ; // neighbor index (get convention)
m6 = Psi[nn]; // get neighbor for phi - 6
//........................................................................
nn = ijk-strideY-1; // neighbor index (get convention)
m7 = Psi[nn]; // get neighbor for phi - 7
//........................................................................
nn = ijk+strideY+1; // neighbor index (get convention)
m8 = Psi[nn]; // get neighbor for phi - 8
//........................................................................
nn = ijk+strideY-1; // neighbor index (get convention)
m9 = Psi[nn]; // get neighbor for phi - 9
//........................................................................
nn = ijk-strideY+1; // neighbor index (get convention)
m10 = Psi[nn]; // get neighbor for phi - 10
//........................................................................
nn = ijk-strideZ-1; // neighbor index (get convention)
m11 = Psi[nn]; // get neighbor for phi - 11
//........................................................................
nn = ijk+strideZ+1; // neighbor index (get convention)
m12 = Psi[nn]; // get neighbor for phi - 12
//........................................................................
nn = ijk+strideZ-1; // neighbor index (get convention)
m13 = Psi[nn]; // get neighbor for phi - 13
//........................................................................
nn = ijk-strideZ+1; // neighbor index (get convention)
m14 = Psi[nn]; // get neighbor for phi - 14
//........................................................................
nn = ijk-strideZ-strideY; // neighbor index (get convention)
m15 = Psi[nn]; // get neighbor for phi - 15
//........................................................................
nn = ijk+strideZ+strideY; // neighbor index (get convention)
m16 = Psi[nn]; // get neighbor for phi - 16
//........................................................................
nn = ijk+strideZ-strideY; // neighbor index (get convention)
m17 = Psi[nn]; // get neighbor for phi - 17
//........................................................................
nn = ijk-strideZ+strideY; // neighbor index (get convention)
m18 = Psi[nn]; // get neighbor for phi - 18
psi_Laplacian = 2.0*3.0/18.0*(m1+m2+m3+m4+m5+m6-6*phi+0.5*(m7+m8+m9+m10+m11+m12+m13+m14+m15+m16+m17+m18-12*psi));//Laplacian of electric potential
residual_error = psi_Laplacian+rho_e/epsilon_LB;
ResidualError[n] = residual_error;
}
}
//extern "C" void ScaLBL_D3Q7_Poisson_ElectricField(int *neighborList, int *Map, signed char *ID, double *Psi, double *ElectricField, int SolidBC,
// int strideY, int strideZ,int start, int finish, int Np){
//