Parametric solution of the Rayleigh-Benard convection model by using the PGD
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چکیده
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The linear thermal instability of a horizontal fluid layer with time-periodic temperature distribution is studied with the help of the Floquet theory. The time-dependent part of the temperature has been expressed in Fourier series. Disturbances are assumed to be infinitesimal. Only even solutions are considered. Numerical results for the critical Rayleigh number are obtained at various Prandtl ...
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Heat transport in turbulent rayleigh-Benard convection
We present measurements of the Nusselt number N as a function of the Rayleigh number R in cylindrical cells with aspect ratios 0. 5</=gamma identical withD/d</=12.8 ( D is the diameter and d is the height). We used acetone with a Prandtl number sigma = 4.0 for 10(5) less, similarR less, similar4x10(10). A fit of a power law N = N(0)R(gamma(eff)) over limited ranges of R yielded values of gamma(...
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ژورنال
عنوان ژورنال: International Journal of Numerical Methods for Heat & Fluid Flow
سال: 2015
ISSN: 0961-5539
DOI: 10.1108/hff-06-2014-0196