ICODE-ADC/lammps
4
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add unit conversion support to pair style tersoff/table

Browse Source
This commit is contained in:
Axel Kohlmeyer
2020-06-24 21:05:00 -04:00
parent 361f636700
commit 00332d299b
4 changed files with 154 additions and 124 deletions
Download Patch File Download Diff File Expand all files Collapse all files

43
unittest/formats/test_pair_unit_convert.cpp
View File

@ -214,6 +214,49 @@ TEST_F(PairUnitConvertTest, tersoff)
EXPECT_NEAR(ev_convert * fold[i][j], f[i][j], fabs(f[i][j] * rel_error));
}
TEST_F(PairUnitConvertTest, tersoff_table)
{
// check if the prerequisite pair style is available
if (!info->has_style("pair", "tersoff/table")) GTEST_SKIP();
if (!verbose) ::testing::internal::CaptureStdout();
lmp->input->one("units metal");
lmp->input->one("read_data test_pair_unit_convert.data");
lmp->input->one("pair_style tersoff/table");
lmp->input->one("pair_coeff * * SiC.tersoff Si C");
lmp->input->one("run 0 post no");
if (!verbose) ::testing::internal::GetCapturedStdout();
// copy pressure, energy, and force from first step
double pold;
lmp->output->thermo->evaluate_keyword("press", &pold);
double eold = lmp->force->pair->eng_vdwl + lmp->force->pair->eng_coul;
double **f = lmp->atom->f;
for (int i = 0; i < 4; ++i)
for (int j = 0; j < 3; ++j)
fold[i][j] = f[i][j];
if (!verbose) ::testing::internal::CaptureStdout();
lmp->input->one("clear");
lmp->input->one("units real");
lmp->input->one("read_data test_pair_unit_convert.data");
lmp->input->one("pair_style tersoff/table");
lmp->input->one("pair_coeff * * SiC.tersoff Si C");
lmp->input->one("run 0 post no");
if (!verbose) ::testing::internal::GetCapturedStdout();
double pnew;
lmp->output->thermo->evaluate_keyword("press", &pnew);
EXPECT_NEAR(pold, p_convert * pnew, fabs(pnew * rel_error));
double enew = lmp->force->pair->eng_vdwl + lmp->force->pair->eng_coul;
EXPECT_NEAR(ev_convert * eold, enew, fabs(enew * rel_error));
f = lmp->atom->f;
for (int i = 0; i < 4; ++i)
for (int j = 0; j < 3; ++j)
EXPECT_NEAR(ev_convert * fold[i][j], f[i][j], fabs(f[i][j] * rel_error));
}
TEST_F(PairUnitConvertTest, sw)
{
// check if the prerequisite pair style is available