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Adding Roe solver entropy fix and an exact Riemann solver #109

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@orevans orevans commented Dec 16, 2015

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amdq[:,transonic_1] += beta[transonic_1] * lamb(1,q_l[:,transonic_1]) * wave[:,0,transonic_1] * (s[0,transonic_1] >= 0.0) + (beta[transonic_1] * lamb(1,q_l[:,transonic_1]) - s[0,transonic_1]) * wave[:,0,transonic_1] * (s[0,transonic_1] < 0.0)
amdq[:,transonic_2] += beta[transonic_2] * lamb(2,q_m[:,transonic_2]) * wave[:,1,transonic_2] * (s[1,transonic_2] >= 0.0) + (beta[transonic_2] * lamb(2,q_m[:,transonic_2]) - s[1,transonic_2]) * wave[:,1,transonic_2] * (s[1,transonic_2] < 0.0)
apdq[:,transonic_1] += (1. - beta[transonic_1]) * lamb(1,q_m[:,transonic_1]) * wave[:,0,transonic_1] * (s[0,transonic_1] < 0.0) + ((1. - beta[transonic_1]) * lamb(1,q_m[:,transonic_1]) - s[0,transonic_1]) * wave[:,0,transonic_1] * (s[0,transonic_1] >= 0.0)
apdq[:,transonic_2] += (1. - beta[transonic_2]) * lamb(2,q_r[:,transonic_2]) * wave[:,1,transonic_2] * (s[1,transonic_2] < 0.0) + ((1. - beta[transonic_2]) * lamb(2,q_r[:,transonic_2]) - s[1,transonic_2]) * wave[:,1,transonic_2] * (s[1,transonic_2] >= 0.0)
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Can you add some continuations to these lines so they are not quite as long?

@mandli
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mandli commented Dec 17, 2015

Other than the comment above it would be nice to add a test for both Riemann solvers in PyClaw.

@ketch
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ketch commented Jan 28, 2016

This fails on Travis because we don't have scipy installed there for the Riemann repo. We could add it, or simply move the import inside the roe solver function. I prefer the latter; @orevans could you please move that import?

@mandli mandli added this to the 5.4 milestone Aug 30, 2016
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4 participants