xref: /libCEED/examples/fluids/qfunctions/velocity_gradient_projection.h (revision 4753b775a3a8f79e2dd83c2aab10890a6a04e913)
1 // Copyright (c) 2017-2024, Lawrence Livermore National Security, LLC and other CEED contributors.
2 // All Rights Reserved. See the top-level LICENSE and NOTICE files for details.
3 //
4 // SPDX-License-Identifier: BSD-2-Clause
5 //
6 // This file is part of CEED:  http://github.com/ceed
7 #include <ceed/types.h>
8 
9 #include "newtonian_state.h"
10 #include "newtonian_types.h"
11 #include "utils.h"
12 
13 CEED_QFUNCTION_HELPER int VelocityGradientProjectionRHS(void *ctx, CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out,
14                                                         StateVariable state_var) {
15   const CeedScalar(*q)[CEED_Q_VLA]         = (const CeedScalar(*)[CEED_Q_VLA])in[0];
16   const CeedScalar(*Grad_q)[5][CEED_Q_VLA] = (const CeedScalar(*)[5][CEED_Q_VLA])in[1];
17   const CeedScalar(*q_data)                = in[2];
18   CeedScalar(*v)[CEED_Q_VLA]               = (CeedScalar(*)[CEED_Q_VLA])out[0];
19 
20   NewtonianIdealGasContext context = (NewtonianIdealGasContext)ctx;
21 
22   CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) {
23     const CeedScalar qi[5] = {q[0][i], q[1][i], q[2][i], q[3][i], q[4][i]};
24     CeedScalar       wdetJ, dXdx[3][3];
25     QdataUnpack_3D(Q, i, q_data, &wdetJ, dXdx);
26 
27     const State s = StateFromQ(context, qi, state_var);
28     State       grad_s[3];
29     StatePhysicalGradientFromReference(Q, i, context, s, state_var, (CeedScalar *)Grad_q, dXdx, grad_s);
30 
31     CeedScalar grad_velocity[3][3];
32     VelocityGradient(grad_s, grad_velocity);
33 
34     for (CeedInt j = 0; j < 3; j++) {
35       for (CeedInt k = 0; k < 3; k++) {
36         v[j * 3 + k][i] = wdetJ * grad_velocity[j][k];
37       }
38     }
39   }
40   return 0;
41 }
42 
43 CEED_QFUNCTION(VelocityGradientProjectionRHS_Conserv)(void *ctx, CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
44   return VelocityGradientProjectionRHS(ctx, Q, in, out, STATEVAR_CONSERVATIVE);
45 }
46 
47 CEED_QFUNCTION(VelocityGradientProjectionRHS_Prim)(void *ctx, CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
48   return VelocityGradientProjectionRHS(ctx, Q, in, out, STATEVAR_PRIMITIVE);
49 }
50 
51 CEED_QFUNCTION(VelocityGradientProjectionRHS_Entropy)(void *ctx, CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
52   return VelocityGradientProjectionRHS(ctx, Q, in, out, STATEVAR_ENTROPY);
53 }
54