Predictions of Buoyancy-induced Flow in Asymmetrical Heated Rotating Cavity System

• Main Authors: Abdul Fatah Abbassi, Jawaid Daudpoto, Muhammad Saleh Jumani
• Format: Article
• Language: English
• Published: Mehran University of Engineering and Technology 2013-04-01
• Series: Mehran University Research Journal of Engineering and Technology
• Subjects: Rotating Cavity System; Low Reynolds Number Second Moment Closure; Buoyancy-Induced Flow
• Online Access: http://publications.muet.edu.pk/research_papers/pdf/pdf822.pdf
• ISSN: 0254-7821; 0254-7821

This paper presents the finite difference solutions for buoyancy-induced flow in the asymmetrical heated rotating cavity system for the range of rotational Reynolds numbers Reθ =6.13x10^5 <Reθ =4.4x106 and the mass flow rates Cw<28000<Cw < 3000. All the simulations have been carried out through the CFD (Computational Fluid Dynamics) commercial code, ANSYS Fluent 12.0, by adopting axisymmetric, Steadystate and elliptic technique. Two well know models namely k-ε and the Reynolds stress models have been employed. The simulated results illustrate the important aspects of the heated rotating cavity flow system. The noteworthy influence of buoyancy-induced flow have been observed on the predicted stream lines, static temperature contours and the local Nusselt numbers for the rotating cavity space. A comparison of the predicted local Nusselt numbers for the hot and cold discs showed a good level of agreement with the measurements.