Numerical Simulation of Turbulent Channel Flow at Low Prandtl Number

K, Vasudeva Rao (2016) Numerical Simulation of Turbulent Channel Flow at Low Prandtl Number. Masters thesis, Indian Institute of Technology Hyderabad.

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Liquid metals are primary coolants in Generation IV nuclear reactors. For low Prandtl fluids, such as liquid metals, classical Reynolds analogy of using turbulent Prandtl number close to unity doesnt predict heat transfer characteristics correctly. In the present study turbulent forced convection flow in a channel at low Pr is studied numerically. Turbulence is modeled by Reynolds averaged Navier- Stokes ( RANS ) equations with low Reynolds number k- beta launder sharma model. The governing equations are solved using high accuracy compact finite difference schemes with four stage Runge-Kutta method for time integration. Heat transfer characteristics of flow such as effect of Re , Pr on temperature and Nu are presented for different Reynolds and Prandtl numbers. A parametric study on variation of turbulent Prandtl number is done and using it comparing with the experimental Nu correlation, a new correlation has been developed for turbulent Prandtl number for low Pr flows. The present results are matching well with the experimental and numerical results available in the literature.

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Item Type: Thesis (Masters)
Uncontrolled Keywords: TD705
Subjects: ?? sub4.9 ??
Divisions: Department of Physics
Depositing User: Team Library
Date Deposited: 01 Sep 2016 06:36
Last Modified: 30 Jul 2019 06:19
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