Direct Solution of Three-Dimensional Turbulent Rayleigh-Bénard Convection

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A direct numerical simulation (DNS) of three-dimensional turbulent Rayleigh-Bénard (RB) convection is investigated. An efficient and accurate method to solve pressure Poisson equation in RB convection is presented by fast Fourier transform (FFT) and a high-performance solution of five-diagonal matrix. The three-dimensional turbulent RB convection in a narrow rectangular cell is studied. The motions and characteristics of plumes and large-scale circulation are analyzed.

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209-212

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December 2013

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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