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Predictive Capabilities of an Improved Cubic k–ε Model for Inert Steady Flows

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Abstract

Through an improved ε transport equation, a major quality enhancement of the cubic k–ε model, earlier developed in[13], is obtained. The ε-equation of [13],yielding good results for wall-bounded and rotating flows, is combined with the one derived by Shih et al. [20], which produces good results for free shear flows (e.g. the plane jet–round jet anomaly is resolved).Results are presented for the following flows: fully developed stationary and rotating channel and pipe, backward-facing step, sudden pipe expansion, smooth channel expansion and contraction, plane and round jet. Heat transfer predictions in turbulent impinging jets are also discussed. Accurate results are obtained for the mean flow quantities for all test cases, without case dependent model tuning.

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Authors and Affiliations

  1. Department of Flow, Heat and Combustion Mechanics, Ghent University, Sint-Pietersnieuwstraat 41, B-9000, Gent, Belgium

    B. Merci & E. Dick

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  1. B. Merci
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  2. E. Dick
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Merci, B., Dick, E. Predictive Capabilities of an Improved Cubic k–ε Model for Inert Steady Flows. Flow, Turbulence and Combustion 68, 335–358 (2002). https://doi.org/10.1023/A:1021754324341

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