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Influence of a Variable Fluid Viscosity on Heat Exchange in Laminar Convection

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Abstract

The influence of a variable fluid viscosity on heat exchange and friction in laminar free and forced convection near the isothermal surface has been investigated numerically within a wide range of variation of Pr numbers for both the heated and cooled surfaces. The influence of the parameter μ on the thermal and dynamic characteristics of the boundary layer has been revealed. The solutions agree well with the experimental data on the local heat exchange and the temperature field. The equations generalizing the numerical solutions have been derived to calculate heat exchange and friction in the case of a variable fluid viscosity.

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  1. Astrakhan State Technical University, Astrakhan, Russia

    N. V. Selivanov

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  1. N. V. Selivanov
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Selivanov, N.V. Influence of a Variable Fluid Viscosity on Heat Exchange in Laminar Convection. Journal of Engineering Physics and Thermophysics 75, 1407–1411 (2002). https://doi.org/10.1023/A:1022131413587

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  • DOI: https://doi.org/10.1023/A:1022131413587

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