Conjugate Effects of Heat and Mass Transfer on Natural Convection Flow Across an Isothermal Horizontal Circular Cylinder With Chemical Reaction

• Published in: Nonlinear analysis (Vilnius, Lithuania) Vol. 12; no. 2
• Main Authors: Md. A. Hye, Md. M. Molla, M. A. H. Khan
• Format: Journal Article
• Language: English
• Published: Vilnius University Press 25.04.2007
• Subjects: chemical reaction; cylinder; natural convection; rate of heat transfer; rate of species concentration; skin-friction
• ISSN: 1392-5113; 2335-8963
• DOI: 10.15388/NA.2007.12.2.14709

Natural convection flow across an isothermal cylinder immersed in a viscous incompressible fluid in the presence of species concentration and chemical reaction has been investigated. The governing boundary layer equations are transformed into a system of non-dimensional equations and the resulting nonlinear system of partial differential equations is reduced to a system of local non-similarity boundary layer equations, which is solved numerically by a very efficient implicit finite difference method together with the Keller-box scheme. Numerical results are presented by the velocity, temperature and species concentration profiles of the fluid as well as the local skin-friction coefficient, local heat transfer rate and local species concentration transfer rate for a wide range of chemical reaction parameter γ (γ = 0.0, 0.5, 1.0, 2.0, 4.0), buoyancy ratio parameter N (N = −1.0, −0.5, 0.0, 0.5, 1.0), Schmidt number Sc (Sc = 0.7, 10.0, 50.0, 100.0) andPrandtl number P r (P r = 0.7, 7.0).