diff options
Diffstat (limited to 'Examples/Burgers/src/burgers_reconstruct_1.cc')
-rw-r--r-- | Examples/Burgers/src/burgers_reconstruct_1.cc | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/Examples/Burgers/src/burgers_reconstruct_1.cc b/Examples/Burgers/src/burgers_reconstruct_1.cc new file mode 100644 index 0000000..59622d8 --- /dev/null +++ b/Examples/Burgers/src/burgers_reconstruct_1.cc @@ -0,0 +1,139 @@ +/* File produced by Kranc */ + +#define KRANC_C + +#include <assert.h> +#include <math.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include "cctk.h" +#include "cctk_Arguments.h" +#include "cctk_Parameters.h" +#include "GenericFD.h" +#include "Differencing.h" + +/* Define macros used in calculations */ +#define INITVALUE (42) +#define QAD(x) (SQR(SQR(x))) +#define INV(x) ((1.0) / (x)) +#define SQR(x) ((x) * (x)) +#define CUB(x) ((x) * (x) * (x)) + +extern "C" void burgers_reconstruct_1_SelectBCs(CCTK_ARGUMENTS) +{ + DECLARE_CCTK_ARGUMENTS; + DECLARE_CCTK_PARAMETERS; + + CCTK_INT ierr = 0; + ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "Burgers::uLeft_group","flat"); + if (ierr < 0) + CCTK_WARN(1, "Failed to register flat BC for Burgers::uLeft_group."); + ierr = Boundary_SelectGroupForBC(cctkGH, CCTK_ALL_FACES, GenericFD_GetBoundaryWidth(cctkGH), -1 /* no table */, "Burgers::uR_group","flat"); + if (ierr < 0) + CCTK_WARN(1, "Failed to register flat BC for Burgers::uR_group."); + return; +} + +static void burgers_reconstruct_1_Body(cGH const * restrict const cctkGH, int const dir, int const face, CCTK_REAL const normal[3], CCTK_REAL const tangentA[3], CCTK_REAL const tangentB[3], int const min[3], int const max[3], int const n_subblock_gfs, CCTK_REAL * restrict const subblock_gfs[]) +{ + DECLARE_CCTK_ARGUMENTS; + DECLARE_CCTK_PARAMETERS; + + + /* Declare the variables used for looping over grid points */ + CCTK_INT i, j, k; + // CCTK_INT index = INITVALUE; + + /* Declare finite differencing variables */ + + if (verbose > 1) + { + CCTK_VInfo(CCTK_THORNSTRING,"Entering burgers_reconstruct_1_Body"); + } + + if (cctk_iteration % burgers_reconstruct_1_calc_every != burgers_reconstruct_1_calc_offset) + { + return; + } + + const char *groups[] = {"Burgers::u_group","Burgers::uLeft_group","Burgers::uR_group"}; + GenericFD_AssertGroupStorage(cctkGH, "burgers_reconstruct_1", 3, groups); + + GenericFD_EnsureStencilFits(cctkGH, "burgers_reconstruct_1", 1, 1, 1); + + /* Include user-supplied include files */ + + /* Initialise finite differencing variables */ + ptrdiff_t const di = 1; + ptrdiff_t const dj = CCTK_GFINDEX3D(cctkGH,0,1,0) - CCTK_GFINDEX3D(cctkGH,0,0,0); + ptrdiff_t const dk = CCTK_GFINDEX3D(cctkGH,0,0,1) - CCTK_GFINDEX3D(cctkGH,0,0,0); + CCTK_REAL const dx = ToReal(CCTK_DELTA_SPACE(0)); + CCTK_REAL const dy = ToReal(CCTK_DELTA_SPACE(1)); + CCTK_REAL const dz = ToReal(CCTK_DELTA_SPACE(2)); + CCTK_REAL const dt = ToReal(CCTK_DELTA_TIME); + CCTK_REAL const dxi = INV(dx); + CCTK_REAL const dyi = INV(dy); + CCTK_REAL const dzi = INV(dz); + CCTK_REAL const khalf = 0.5; + CCTK_REAL const kthird = 1/3.0; + CCTK_REAL const ktwothird = 2.0/3.0; + CCTK_REAL const kfourthird = 4.0/3.0; + CCTK_REAL const keightthird = 8.0/3.0; + CCTK_REAL const hdxi = 0.5 * dxi; + CCTK_REAL const hdyi = 0.5 * dyi; + CCTK_REAL const hdzi = 0.5 * dzi; + + /* Initialize predefined quantities */ + CCTK_REAL const p1o1 = 1; + CCTK_REAL const p1odx = INV(dx); + CCTK_REAL const p1ody = INV(dy); + CCTK_REAL const p1odz = INV(dz); + + /* Loop over the grid points */ + for (k = min[2]; k < max[2]; k++) + { + for (j = min[1]; j < max[1]; j++) + { + for (i = min[0]; i < max[0]; i++) + { + int const index = CCTK_GFINDEX3D(cctkGH,i,j,k) ; + + /* Assign local copies of grid functions */ + + CCTK_REAL uL = u[index]; + + + /* Include user supplied include files */ + + /* Precompute derivatives */ + CCTK_REAL const DiffPlus1u = DiffPlus1(&u[index]); + CCTK_REAL const DiffMinus1u = DiffMinus1(&u[index]); + + /* Calculate temporaries and grid functions */ + CCTK_REAL slopeL = DiffMinus1u; + + CCTK_REAL slopeR = DiffPlus1u; + + CCTK_REAL slope = IfThen(slopeL*slopeR < 0,0,IfThen(Abs(slopeL) < + Abs(slopeR),slopeL,slopeR)); + + CCTK_REAL uLeftL = -0.5*slope + uL; + + CCTK_REAL uRL = 0.5*slope + uL; + + /* Copy local copies back to grid functions */ + uLeft[index] = uLeftL; + uR[index] = uRL; + } + } + } +} + +extern "C" void burgers_reconstruct_1(CCTK_ARGUMENTS) +{ + DECLARE_CCTK_ARGUMENTS; + DECLARE_CCTK_PARAMETERS; + + GenericFD_LoopOverInterior(cctkGH, &burgers_reconstruct_1_Body); +} |