Numerical simulation of turbulent Rayleigh-Benard convection
by Igor Palymskiy
Progress in Computational Fluid Dynamics, An International Journal (PCFD), Vol. 12, No. 4, 2012

Abstract: The turbulent convection of liquid in a horizontal layer is simulated numerically for the case of heating from below. The liquid is assumed to be viscous and incompressible, and the layer boundaries are assumed to be flat, isothermal, and free from shear stress. The Boussinesq approach without any semi-empirical relationships (DNS) has been used and the flow is considered to be three-dimensional and non-stationary. The special pseudo-spectral method with resolution 65³ of harmonics and Prandtl number equal to 10 is used. The present 3D, free simulation shows that exponent of power law at r ≥ 150 for temperature pulsations −2/15 coincides with the experimental result and that exponent of power laws for vertical velocity pulsations 0.4 and Reynolds number 0.5 are close to known experimental and numerical results. The same is also true for kinetic energy and rms velocity.

Online publication date: Tue, 25-Nov-2014

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the Progress in Computational Fluid Dynamics, An International Journal (PCFD):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com