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Development of the modified k-ɛ turbulence model of power-law fluid for engineering applications

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Abstract

In the present study, a high Reynolds number version of a turbulence model was proposed by using drag reduction to analyze the turbulent flows of power-law fluid for engineering applications. In order to determine the model constants in the constitutive equation, numerical simulation was conducted under the same conditions that were applied to obtain the experiment results and previous turbulence models. For validation of the modified turbulence model, numerical simulations were performed for power-law fluids of different viscosities. The results of the modified k-ɛ turbulence model showed better agreement with the experimental results than those of the standard k-ɛ turbulence model. In addition, computation time and computer resource of the modified k-ɛ turbulence model were reduced by about one third as compared to the low Reynolds number model for power-law fluids.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Chung-Ang University, Seoul, 156-756, Korea

    Kyoungchul Ro & HongSun Ryou

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  1. Kyoungchul Ro
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  2. HongSun Ryou
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Correspondence to HongSun Ryou.

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Ro, K., Ryou, H. Development of the modified k-ɛ turbulence model of power-law fluid for engineering applications. Sci. China Technol. Sci. 55, 276–284 (2012). https://doi.org/10.1007/s11431-011-4664-x

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  • DOI: https://doi.org/10.1007/s11431-011-4664-x

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