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analytic solution for displacement calculation

This commit is contained in:
Martin Diehl 2023-06-04 22:53:42 +02:00
parent d64b64ed05
commit 11c4be008f
1 changed files with 27 additions and 0 deletions
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27
python/tests/test_grid_filters.py
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@ -107,6 +107,33 @@ class TestGridFilters:
assert np.allclose(grid_filters.displacement_point([1,1,1],F_no_avg), assert np.allclose(grid_filters.displacement_point([1,1,1],F_no_avg),
grid_filters.displacement_fluct_point([1,1,1],F_no_avg)) grid_filters.displacement_fluct_point([1,1,1],F_no_avg))
displacement_fluct_test_data = [
(['np.sin(np.pi*2*nodes[...,0]/size[0])', '0.0', '0.0',
'0.0', '0.0', '0.0',
'0.0', '0.0', '0.0'],
['-np.cos(np.pi*2*nodes[...,0]/size[0])/np.pi/2*size[0]', '0.0', '0.0']),
(['np.cos(np.pi*2*nodes[...,0]/size[0])', '0.0', '0.0',
'0.0', '0.0', '0.0',
'0.0', '0.0', 'np.cos(np.pi*2*nodes[...,2]/size[2])'],
['np.sin(np.pi*2*nodes[...,0]/size[0])/np.pi/2*size[0]',
'0.0',
'np.sin(np.pi*2*nodes[...,2]/size[2])/np.pi/2*size[2]'])]
@pytest.mark.parametrize('F_def,u_def',displacement_fluct_test_data)
def test_displacment_fluct_analytic(self,F_def,u_def):
size = np.random.random(3)+1.0
cells = np.random.randint(8,32,(3))
nodes = grid_filters.coordinates0_point(cells,size)
my_locals = locals() # needed for list comprehension
F = np.stack([np.broadcast_to(eval(F,globals(),my_locals),cells) for F in F_def],axis=-1).reshape(tuple(cells) + (3,3))
u = np.stack([np.broadcast_to(eval(u,globals(),my_locals),cells) for u in u_def],axis=-1).reshape(tuple(cells) + (3,))
assert np.allclose(u,grid_filters.displacement_fluct_point(size,F))
@pytest.mark.parametrize('function',[grid_filters.cellsSizeOrigin_coordinates0_point, @pytest.mark.parametrize('function',[grid_filters.cellsSizeOrigin_coordinates0_point,
grid_filters.cellsSizeOrigin_coordinates0_node]) grid_filters.cellsSizeOrigin_coordinates0_node])
def test_invalid_coordinates(self,function): def test_invalid_coordinates(self,function):