Open AccessNumerical Simulation of Mixed Convection in a Rotating Cylindrical Cavity: Influence of Prandtl Number
Author(s) -
G. Urquiza,
Laura Castro,
J. C. García,
Miguel Basurto,
Enoc Bogarin
Publication year - 2013
Publication title -
advances in mechanical engineering/advances in mechanical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.318
H-Index - 40
eISSN - 1687-8140
pISSN - 1687-8132
DOI - 10.1155/2013/950765
Subject(s) - prandtl number , turbulent prandtl number , rayleigh number , reynolds number , mechanics , magnetic prandtl number , physics , nusselt number , combined forced and natural convection , heat transfer , thermodynamics , classical mechanics , natural convection , mathematics , turbulence
A numerical study of the flow and heat transfer on a rotating cylindrical cavity solving the mass, momentum, and energy equations is presented in this work. The study describes the influence of the Prandtl number on flow in critical state on a cavity which contains a cooling fluid. Problem studied includes Prandtl numbers 0.001 < Pr > 15, aspect ratios 0.25 < A > 1, and Reynolds numbers 0.001 < Re > 600. Differential equations have been discretised using the finite differences method. The results show a tendency followed by heat transfer as the Reynolds number increases from 300 to 600; in addition, emphasis on the critical values of the Rayleigh number for small Prandtl numbers shows that thermal instability in mixed convection depends on the Prandtl number