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test_stress_convergence module

Module to gather tests for convergence of decoupled stress system.

This file is executed by pytest to have good CI.

class test_stress_convergence.TestStressConvergence

Bases: object

Class to bundle all stress convergence tests.

All tests are compared against reference errors.

working_dir = 'tests/2d_stress'

solver_path = 'fenicsR13'

run_solver(inputfile)

Run the solver as subprocess with the given input file.

Test fails if subprocess return Exception or error.

compare_errors(errorsfile, ref_errorsfile)

Check against reference errors. Compares absolute differences.

Absolute Error allowed: 1E-10 Return exception if diff returns with !=0 A comparison for complete equalness can be obtained with:

subprocess.check_call([
    "diff", "-u", "--strip-trailing-cr", errorsfile, ref_errorsfile
], cwd=self.working_dir)

create_meshes()

Create the test meshes. Executed before any test of the class.

Often not needed if meshes are in Git through LFS for reproducability.

test_stress_01_nosource_rot_p1p1p1_gls()

Execute decoupled heat system test and check with reference errors.

Parameter Value
\(Kn\)	\(0.1\)
\(f_{\mathrm{mass}}\)	\(0\)
\(v_t^1\)	\(10.0\)
Elements	\(P_1P_1P_1\)
Stabilization	GLS

test_stress_01_nosource_rot_p1p1p1_stab()

Execute decoupled heat system test and check with reference errors.

Parameter Value
\(Kn\)	\(0.1\)
\(f_{\mathrm{mass}}\)	\(0\)
\(v_t^1\)	\(10.0\)
Elements	\(P_1P_1P_1\)
Stabilization	CIP, \(\delta_u=1, \delta_p=0.01\)

test_stress_01_source_norot_p1p1p1_stab()

Execute decoupled heat system test and check with reference errors.

Parameter Value
\(Kn\)	\(0.1\)
\(f_{\mathrm{mass}}\)	\(0.4(1-\frac{5R^2}{18{Kn}^2})\cos(\phi)\)
\(v_t^1\)	\(0\)
Elements	\(P_1P_1P_1\)
Stabilization	CIP, \(\delta_u=1, \delta_p=0.01\)

test_stress_01_source_rot_p1p1p1_stab()

Execute decoupled heat system test and check with reference errors.

Parameter Value
\(Kn\)	\(0.1\)
\(f_{\mathrm{mass}}\)	\(0.4(1-\frac{5R^2}{18{Kn}^2})\cos(\phi)\)
\(v_t^1\)	\(10.0\)
Elements	\(P_1P_1P_1\)
Stabilization	CIP, \(\delta_u=1, \delta_p=0.01\)

test_stress_01_source_rot_p1p2p3_nostab()

Execute decoupled heat system test and check with reference errors.

Parameter Value
\(Kn\)	\(0.1\)
\(f_{\mathrm{mass}}\)	\(0.4(1-\frac{5R^2}{18{Kn}^2})\cos(\phi)\)
\(v_t^1\)	\(10.0\)
Elements	\(P_1P_2P_3\)
Stabilization	CIP, \(\delta_u=1, \delta_p=0.01\)

test_stress_01_source_rot_p2p2p2_stab()

Execute decoupled heat system test and check with reference errors.

Parameter Value
\(Kn\)	\(0.1\)
\(f_{\mathrm{mass}}\)	\(0.4(1-\frac{5R^2}{18{Kn}^2})\cos(\phi)\)
\(v_t^1\)	\(10.0\)
Elements	\(P_2P_2P_2\)
Stabilization	CIP, \(\delta_u=1, \delta_p=0.01\)

test_stress_10_source_rot_p1p1p1_stab()

Execute decoupled heat system test and check with reference errors.

Parameter Value
\(Kn\)	\(10.0\)
\(f_{\mathrm{mass}}\)	\(0.4(1-\frac{5R^2}{18{Kn}^2})\cos(\phi)\)
\(v_t^1\)	\(10.0\)
Elements	\(P_1P_1P_1\)
Stabilization	CIP, \(\delta_u=1, \delta_p=0.01\)

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