Numerical Instability in Simulating High-Wind Wildfire Spread

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Daniel Shi

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Dec 2, 2023, 7:27:22 PM12/2/23
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Hi PIs,

I tried to simulate the spread of a wildfire in 15 m/s winds, but encountered a numerical instability error when the simulation got to 22 seconds.

1.png

I really appreciate any help you can provide.
Daniel S
Boundary_Fuel_Model.fds

Kevin McGrattan

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Dec 4, 2023, 2:09:32 PM12/4/23
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Remove these lines

&MISC SIMULATION_MODE='SVLES', TMPA=28.0/
&MISC CFL_VELOCITY_NORM = 1/
&CLIP CLIP_DT_RESTRICTIONS_MAX = 0 /
&CLIP MINIMUM_DENSITY = 0.01 /

Install the latest nightly build. 

Remove the spaces from the input file name. Use underscores.

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