Author： Baig M. F. Masood A.
Publisher： Taylor & Francis Ltd
ISSN： 1521-0634
Source： Numerical Heat Transfer Part A: Applications, Vol.40, Iss.2, 2001-08, pp. : 181-202
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
A numerical study of two-dimensional natural convection in a rotating and differentially heated square enclosure has been presented by solving the conservation equations of mass, momentum, and energy in a rotating coordinate system using the finite difference method. Considering air to be the fluid medium in the cavity, the results are presented for a wide range of Rayleigh numbers (Ra), Taylor numbers (Ta), and rotational Rayleigh numbers (Raw). It is found that a significant enhancement in heat transfer can be achieved due to rotational effects. At a particular Ra, increase in Ta results in an increase in frequency of oscillations of the dynamical variables and also gives rise to formation of a mushroom-shaped plume in the core of the cavity. For constant Ta, an increase in Ra results in formation of thinner thermal boundary layers at the isothermal walls and stable thermal stratification in the core of the cavity. The stratification becomes unstable when the Ta is increased above a certain value of 2 × 106 and flow reversal occurs leading to convective flows in the core of the cavity.
Related content
Access to resources
Recommend
By Masuda Y. Aizawa T. Kanakubo M. Saito N. Ikushima Y.
International Communications in Heat and Mass Transfer, Vol. 31, Iss. 2, 2004-03 ,pp. :