From 66a50302592d30e421babe0ff8446c717c272d9a Mon Sep 17 00:00:00 2001 From: Ian Hinder Date: Thu, 15 Dec 2011 17:52:49 +0100 Subject: Euler example: Add generated thorn --- Examples/Euler/src/euler_initial_shock.cc | 147 ++++++++++++++++++++++++++++++ 1 file changed, 147 insertions(+) create mode 100644 Examples/Euler/src/euler_initial_shock.cc (limited to 'Examples/Euler/src/euler_initial_shock.cc') diff --git a/Examples/Euler/src/euler_initial_shock.cc b/Examples/Euler/src/euler_initial_shock.cc new file mode 100644 index 0000000..b8fe537 --- /dev/null +++ b/Examples/Euler/src/euler_initial_shock.cc @@ -0,0 +1,147 @@ +/* File produced by Kranc */ + +#define KRANC_C + +#include +#include +#include +#include +#include +#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)) + +static void euler_initial_shock_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 euler_initial_shock_Body"); + } + + if (cctk_iteration % euler_initial_shock_calc_every != euler_initial_shock_calc_offset) + { + return; + } + + const char *groups[] = {"grid::coordinates","Euler::p_group","Euler::rho_group","Euler::v_group"}; + GenericFD_AssertGroupStorage(cctkGH, "euler_initial_shock", 4, groups); + + + /* 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 p1o12dx = 0.0833333333333333333333333333333*INV(dx); + CCTK_REAL const p1o12dy = 0.0833333333333333333333333333333*INV(dy); + CCTK_REAL const p1o12dz = 0.0833333333333333333333333333333*INV(dz); + CCTK_REAL const p1o144dxdy = 0.00694444444444444444444444444444*INV(dx)*INV(dy); + CCTK_REAL const p1o144dxdz = 0.00694444444444444444444444444444*INV(dx)*INV(dz); + CCTK_REAL const p1o144dydz = 0.00694444444444444444444444444444*INV(dy)*INV(dz); + CCTK_REAL const p1o2dx = 0.5*INV(dx); + CCTK_REAL const p1o2dy = 0.5*INV(dy); + CCTK_REAL const p1o2dz = 0.5*INV(dz); + CCTK_REAL const p1o4dxdy = 0.25*INV(dx)*INV(dy); + CCTK_REAL const p1o4dxdz = 0.25*INV(dx)*INV(dz); + CCTK_REAL const p1o4dydz = 0.25*INV(dy)*INV(dz); + CCTK_REAL const p1odx = INV(dx); + CCTK_REAL const p1odx2 = INV(SQR(dx)); + CCTK_REAL const p1ody = INV(dy); + CCTK_REAL const p1ody2 = INV(SQR(dy)); + CCTK_REAL const p1odz = INV(dz); + CCTK_REAL const p1odz2 = INV(SQR(dz)); + CCTK_REAL const pm1o12dx2 = -0.0833333333333333333333333333333*INV(SQR(dx)); + CCTK_REAL const pm1o12dy2 = -0.0833333333333333333333333333333*INV(SQR(dy)); + CCTK_REAL const pm1o12dz2 = -0.0833333333333333333333333333333*INV(SQR(dz)); + CCTK_REAL const pm1o2dx = -0.5*INV(dx); + CCTK_REAL const pm1o2dy = -0.5*INV(dy); + CCTK_REAL const pm1o2dz = -0.5*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 xL = x[index]; + + + /* Include user supplied include files */ + + /* Precompute derivatives */ + + /* Calculate temporaries and grid functions */ + CCTK_REAL rhoL = Piecewise(List(List(ToReal(rhoL0),xL < 0.5)),0. + + ToReal(rhoR0)); + + CCTK_REAL v1L = Piecewise(List(List(ToReal(vL0),xL < 0.5)),0. + + ToReal(vR0)); + + CCTK_REAL v2L = 0; + + CCTK_REAL v3L = 0; + + CCTK_REAL pL = Piecewise(List(List(ToReal(pL0),xL < 0.5)),0. + + ToReal(pR0)); + + /* Copy local copies back to grid functions */ + p[index] = pL; + rho[index] = rhoL; + v1[index] = v1L; + v2[index] = v2L; + v3[index] = v3L; + } + } + } +} + +extern "C" void euler_initial_shock(CCTK_ARGUMENTS) +{ + DECLARE_CCTK_ARGUMENTS; + DECLARE_CCTK_PARAMETERS; + + GenericFD_LoopOverEverything(cctkGH, &euler_initial_shock_Body); +} -- cgit v1.2.3