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Type: Artigo de periódico
Title: Comparative Analysis Of Different Turbulent Mixing Length Models For Low Prandtl Number Fluids
Author: Silva Marcelo C.
Miranda Ricardo F.
De Lima Lutero C.
Abstract: The present article studies some models of turbulent Prandtl number for low and very low-Prandtl-number fluids. It was investigated model of Cebeci, two models of Kays, and model of Wassel and Catton. Three different low and very low-Prandtl-number fluids and air were studied and compared with experimental data found in the literature. It was observed the behaviour of the turbulent Prandtl number close to the wall as function of dimensionless wall distance and eddy diffusivity of heat. It was observed that near the wall Prt shows asymptotic behaviour for all models and fluids, except for model of Cebeci and air. For the wall distance, y+, greater than 700 all models and fluids show values of Prt around 0.9-1.0.
Rights: fechado
Identifier DOI: 
Date Issue: 2000
Appears in Collections:Unicamp - Artigos e Outros Documentos

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