Regularized Lattice Boltzmann Simulation of Laminar Natural Convection in Entrance Region of 2D Channels

Abstract:

This paper presents a numerical study of incompressible laminar natural convection in entrance region of two dimensional vertical and inclined channels using regularized lattice Boltzmann Bhatnaghar-Gross-Krook method. Individual distribution functions with lattice types D2Q9 and D2Q5 are considered to solve fluid flow and thermal fields, respectively. Rayleigh number and inclination angle are varied from 10e2 to 10e6 and 0 to 60°, respectively. Distribution functions are introduced to mimic Bernoulli’s equation for calculating pressure at the inlet. Predicted Nusselt numbers are compared with Nusselt numbers correlation. Averaged Nusselt numbers compare well with Nusselt number correlation of Bar-Cohen & Rohsenow.

• Periodical: Applied Mechanics and Materials (Volume 307)
• Pages: 267-270
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.307.267
• Online since: February 2013
• Authors: Mehaboob Basha, C.S. Nor Azwadi
• Keywords: Entrance Region, Lattice Boltzmann Method, Multi-Population Distribution, Natural Convection

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