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convert measured roughness to sand grain roughness

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Old   April 30, 2014, 09:25
Default convert measured roughness to sand grain roughness
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Catherine Meissner
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Hello,
I am comparing different CFD codes and I am unfortunately not an expert on CFX. Can somebody explain me which factor CFX uses to convert measured roughness into sand grain roughness which is then used in the wall functions?
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Old   April 30, 2014, 18:59
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Glenn Horrocks
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This is discussed in the documentation- theory guide, section 2.8.1.4.
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