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V2f model , Fluent's background

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Old   August 11, 2006, 12:10
Default V2f model , Fluent's background
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pablo
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Does anybode have the v2f model fluent's help?

pleaseeee.
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Old   August 21, 2006, 02:32
Default Re: V2f model , Fluent's background
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hossein
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The v2-f Model The v2-f model is similar to the standard k- model, but incorporates near-wall turbulence anisotropy and non-local pressure-strain e ects. It is a general low-Reynoldsnumber turbulence model that is valid all the way up to solid walls, and therefore does not need to make use of wall functions. Although the model was originally developed for attached or mildly separated boundary layers [65], it also accurately simulates ows dominated by separation . The distinguishing feature of the v2-f model is its use of the velocity scale, v2, instead of the turbulent kinetic energy, k, for evaluating the eddy viscosity. v2, which can be thought of as the velocity uctuation normal to the streamlines, has shown to provide the right scaling in representing the damping of turbulent transport close to the wall, a feature that k does not provide. For more information about the theoretical background and usage of the v2-f model, please visit the Fluent User Services Center (www.fluentusers.com).
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