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tavoid divide by zero in inviscid fluid - sphere - GPU-based 3D discrete elemen… |
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git clone git://src.adamsgaard.dk/sphere |
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LICENSE |
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commit 6976fe3a898d772d6d3bf0726f566a50c537e817 |
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parent 3cd8e98d6f47fed8ba248b3d20f6326577c648d5 |
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Author: Anders Damsgaard <[email protected]> |
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Date: Mon, 10 Nov 2014 12:47:00 +0100 |
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avoid divide by zero in inviscid fluid |
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Diffstat: |
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M python/sphere.py | 2 +- |
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M tests/cfd_tests_darcy.py | 6 +++--- |
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2 files changed, 4 insertions(+), 4 deletions(-) |
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--- |
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diff --git a/python/sphere.py b/python/sphere.py |
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t@@ -2776,7 +2776,7 @@ class sim: |
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# Navier-Stokes |
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if self.cfd_solver[0] == 0: |
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- dt_min_von_neumann = 0.5*dx_min**2/self.mu[0] |
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+ dt_min_von_neumann = 0.5*dx_min**2/(self.mu[0] + 1.0e-16) |
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return numpy.min([dt_min_von_neumann, dt_min_cfl])*safety |
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diff --git a/tests/cfd_tests_darcy.py b/tests/cfd_tests_darcy.py |
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t@@ -27,9 +27,9 @@ orig.run(device=2, verbose=False) |
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#orig.run(verbose=True) |
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py = sphere.sim(sid = orig.sid, fluid = True) |
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-ones = numpy.ones((orig.num)) |
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+zeros = numpy.zeros((orig.num)) |
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py.readlast(verbose = False) |
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-compareNumpyArrays(ones, py.p_f, "Conservation of pressure:") |
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+compareNumpyArrays(zeros, py.p_f, "Conservation of pressure:") |
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# Convergence rate (1/3) |
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it = numpy.loadtxt("../output/" + orig.sid + "-conv.log") |
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t@@ -48,7 +48,7 @@ else: |
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# Add pressure gradient |
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print("# Pressure gradient") |
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-orig.p_f[:,:,-1] = 1.1 |
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+orig.p_f[:,:,-1] = 1.0 |
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#orig.setTolerance(1.0e-8) |
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#orig.time_dt[0] *= 0.01 |
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orig.cleanup() |
