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spray computation with LES

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Old   March 4, 2003, 08:25
Default spray computation with LES
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Here is another one:

I am doing LES calculations of spray/ wall impingement. My domin is of cylindrical shape with a butterfly mesh inside. At first I was using a wall BC at the bottom (obviously) and pressure BC's elsewhere. This gave me reasonable results at the beginning of the computation but at a later stage I got wave-like fluctuations at the upper pressure BC. I was able to fix this by changing the upper pressure BC also to a wall BC. Now, the fluctuations are gone but I get some source/ sink-like spots in my domain. Has anyone an idea what mistake I am doing here ?
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