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August 8, 2008, 19:28 |
request to Tom--LES in Channel flow
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#1 |
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Hi,
First of all , thanks to agg and tom. My, Re is 205. And , my resolution near the wall is 0.68 wall unit. Still, according to agg, i will try, with Re=180. How, could i understand , my intial condition is divergence free or not? As, i am using a profile like below for i.c---- u(x,y,z)=(1-y^8)+10*(rand(iseed)-0.5) v(x,y,z)=0.0 w(x,y,z)=0.0 rand(iseed) will give value between 0,1. So, my disturbence is -5,+5 at random values. Could, you please, tell me , whethere, this field is satisfying continuity or not? ------------------------------------------------------ Tom, is my random disturbence fullfill the necessary large scale and amplitude. tom, could you please, tell me what is the exact expression for i.c condition you , used. Do, you give v=0.0, w=0.0 or anything else. ------------------------------------------------- Could you please, send me the expression you used. one more thing---how you specify the mean pressure gradient? I have used dp/dx=1.0, beccause, my code is nondimesionalized by half channel height and friction velocity. am i correct? or what else you are using? |
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August 9, 2008, 06:38 |
Re: request to Tom--LES in Channel flow *NM*
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#2 |
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August 11, 2008, 05:09 |
Re: request to Tom--LES in Channel flow
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#3 |
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hi,
you did not post anything. |
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