Mixed convection from a heated square cylinder to Newtonian and power-law fluids

Dhiman, A. K. ; Anjaiah, N. ; Chhabra, R. P. ; Eswaran, V. (2007) Mixed convection from a heated square cylinder to Newtonian and power-law fluids Journal of Fluids Engineering, 129 (4). pp. 506-513. ISSN 0098-2202

Full text not available from this repository.

Official URL: http://link.aip.org/link/?JFEGA4/129/506/1

Related URL: http://dx.doi.org/10.1115/1.2436586


Steady laminar mixed convection flow and heat transfer to Newtonian and power-law fluids from a heated square cylinder has been analyzed numerically. The full momentum and energy equations along with the Boussinesq approximation to simulate the buoyancy effects have been solved. A semi-explicit finite volume method with nonuniform grid has been used for the range of conditions as: Reynolds number 1-30, power-law index: 0.8-1.5, Prandtl number 0.7-100 (Pe ≤ 3000) for Richardson number 0-0.5 in an unbounded configuration. The drag coefficient and the Nusselt number have been reported for a range of values of the Reynolds number, Prandtl number, and Richardson number for Newtonian, shear-thickening (n > 1) and shear-thinning (n < 1) fluids. In addition, detailed streamline and isotherm contours are also presented to show the complex flow field, especially in the rear of the cylinder. The effects of Prandtl number and of power-law index on the Nusselt number are found to be more pronounced than that of buoyancy parameter (Ri ≤ 0.5) for a fixed Reynolds number in the steady cross-flow regime (Re ≤ 30).

Item Type:Article
Source:Copyright of this article belongs to The American Society of Mechanical Engineers.
Keywords:Convection; Non-Newtonian Flow; External Flows; Confined Flow; Finite Volume Methods; Laminar Flow; Flow Instability; Drag
ID Code:78488
Deposited On:20 Jan 2012 04:29
Last Modified:20 Jan 2012 04:29

Repository Staff Only: item control page