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Setting a surface roughness on a wall

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Old   February 1, 2006, 02:57
Default Setting a surface roughness on a wall
  #1
Sandile Peta
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Hi,

I'm modelling a solar car in a wind tunnel in fluent and I'd like to know how I can create a surface roughness for one of the walls(ie. the bottom wall of the wind tunnel to simulate the road surface).
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Old   February 1, 2006, 03:57
Default Re: Setting a surface roughness on a wall
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kharicha
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If you use any turbulence model, you will see in the boundary condition panel a line with "wall roughness"...fill it.

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Old   February 1, 2006, 05:39
Default Solution-Solve-Initialise
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Sandile Peta
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when clicking Solution-Solve-Initialise-compute from what is the best value of compute from to select, for instance in a wind tunnel model the options are: all-zones, car, velocity inlet, wall. Which would be the best for me to select in this case?

thanks sandile
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Old   February 1, 2006, 09:14
Default Re: Solution-Solve-Initialise
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Ravi Duggirala
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hi initialize from the velocity inlet. It seems the initialization might change your result and also the convergence rate. I will try initializing the velocity inlet to inlet velocity Ravi
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