Turbulence modeling for the axially rotating pipe from the viewpoint of analytical closures |
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| Authors: | Robert Rubinstein Ye Zhou |
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| Affiliation: | (1) Computational Modeling and Simulation Branch, NASA Langley Research Center, Hampton, VA 23681, USA;(2) Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, Hampton, VA 23681, USA;(3) Present address: Lawrence Livermore National Laboratory, Livermore, CA, USA |
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| Abstract: | A single-point model eddy viscosity model of rotation effects on the turbulent flow in an axially rotating pipe is developed based on two-point closure theories. Rotation is known to impede energy transfer in turbulence; this fact is reflected in the present model through a reduced eddy viscosity, leading to laminarization of the mean velocity profile and return to a laminar friction law in the rapid rotation limit. This model is compared with other proposals including linear redistribution effects through the rapid pressure-strain correlation, Richardson number modification of the eddy viscosity in a model of non-rotating turbulence, and the reduction of turbulence through the suppression of near-wall production mechanisms. PACS 47.27.Eq, 47.32.-y |
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| Keywords: | rotating turbulence rotating pipe flow mixing length model frame indifference |
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