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timprove stability with central finite differences for displacement - slidergri… |
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git clone git://src.adamsgaard.dk/slidergrid |
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commit 2c8a1eb434b536ba5a6bd764c8a40ff975e78a97 |
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parent 29dcc40d11391606b585ee8c16d62ffab38d835d |
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Author: Anders Damsgaard <[email protected]> |
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Date: Wed, 23 Mar 2016 12:13:07 -0700 |
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improve stability with central finite differences for displacement |
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Diffstat: |
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M slidergrid/slider.c | 6 +++--- |
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M test.c | 2 +- |
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2 files changed, 4 insertions(+), 4 deletions(-) |
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diff --git a/slidergrid/slider.c b/slidergrid/slider.c |
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t@@ -158,11 +158,11 @@ void slider_displacement(slider* s1, const slider s2, |
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// increment in inter-slider distance, divide by two to get displacement |
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// over 1 time step |
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- //const Float3 ddist = divide_float3_scalar( |
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- //subtract_float3(dist_future, dist0), 2.0); |
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+ const Float3 ddist = divide_float3_scalar( |
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+ subtract_float3(dist_future, dist0), 2.0); |
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// Get displacement change from previous and current inter-slider distance |
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- const Float3 ddist = subtract_float3(dist, dist0); |
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+ //const Float3 ddist = subtract_float3(dist, dist0); |
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//if (iteration == 0) |
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//ddist = zeroes_float3(); |
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diff --git a/test.c b/test.c |
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t@@ -35,7 +35,7 @@ simulation setup_simulation() |
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//sim.sliders[i].bond_parallel_viscosity = 1.0e2; |
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} |
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- sim.sliders[0].vel.x = 0.1; |
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+ sim.sliders[0].vel.x = 0.01; |
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// set temporal parameters |
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sim.time = 0.0; |
