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Turbulence Model Validation During Analysis of the Turbulent Boundary Layer Structure near a Rectangular Ridge on a Plate

Authors: Afanas’ev V.N., Egorov K.S., Dehai Kong Published: 07.12.2018
Published in issue: #6(123)/2018  

DOI: 10.18698/0236-3941-2018-6-72-89

 
Category: Power Engineering | Chapter: Heat Engines  
Keywords: numerical computations, turbulence models, rectangular ridge, plate, velocity pulses

We present validation of dual-parameter dissipative turbulence models and a multiparameter Reynolds stress model that are implemented in the UDF (user defined function) enabled ANSYS FLUENT software package, for the case of two-dimensional detached turbulent flow near a rectangular ridge on a plate. We compared our numerical estimations to velocity curves and turbulence characteristics obtained in an experiment. We detected that the low-Reynolds-number non-linear (k--ε)-model (LRN-LCL) and the multi-parameter Reynolds stress model (LRN-GL) provide more accurate estimations of the average velocity field and turbulence anisotropy before and after the ridge

The study was partially supported by the Ministry of Education and Science of the Russian Federation (government assignment no. 13.5521.2017/BCh)

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