Computational fluid dynamics modelling of buoyancy induced viscoelastic flow in a porous medium with magnetic field effects

• Autorzy: Beg O. A. , Takhar H. S. , Kumari M. , Nath G.
• Języki publikacji: EN

Abstrakty

EN

A 2-dimensional computational fluid dynamics analysis of steady state thermal boundary layer flow of a second order non-Newtonian fluid past a horizontal wedge in a Brinkman-Darcy porous medium, in the presence of a transverse magnetic field, is presented. The governing equations are transformed from Cartesian coordinates (x,y) into a sixth order system of partial differential equations in a 'ksi'-n coordinate system. These complex equations are then reduced to a set of six first order equations which are solved using the robust Keller finite difference method, and a block tridiagonal iterative solver, SOLV6. It is shown that heat transfer magnitude is depressed by magnetic field parameter (Hartmann number, Ha) and also considerably reduced with increasing viscoelasticity parameter (K). Surface shear stresses are also reported to fall considerably with increase in viscoelasticity of the fluid. Effects of other hydrodynamic and thermal parameters on the flow are discussed in detail.

Słowa kluczowe

EN

computational; boundary layer theory; viscoelastic material; magnetic body forte; Brinkman vorticity diffusion; Darcy's law; Keller implicit difference method; surface heat transfer; shear stress; natural convection heat transfer

PL

materiałoznawstwo

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2001
• Tom: Vol. 6, no 1
• Strony: 187--210
• Opis fizyczny: Bibliogr. 24 poz., tab., wykr.

Twórcy

autor

Beg O. A.

autor

Takhar H. S.

autor

Kumari M.

autor

Nath G.

• BNFL Engineering, ANSYS Group Civil, Structural & Architectural Division Level 3, Hinton House, Risley, WA3 6AS, UK