Numerical study of turbulent flow and heat transfer from an array of thick plates

摘要: Abstract Convective heat transfer in turbulent flow from an array of blunt plates is numerically studied. The assumed to be steady, two dimensional, incompressible and turbulent. A modified equation k – e model with the preferential dissipation modification incorporated determine accurately field, as well recirculation pattern along entrance region plates. To predict local variations turbulence quantities equation, a three-layer, near wall was examined based on function. governing equations are solved using finite volume technique bounded skew hybrid difference scheme BSHD, PISO algorithm iterate for pressure corrections. solutions were obtained two-pass procedure, devised allow correct use functions. Computations Re D range 2.5·10 4 10 6 ; Prandtl numbers 1, 2, 5, blockage ratios 5 % through 30 %. Results friction coefficient, Nusselt number distribution combined entry length problem presented different conditions thickness. These findings accord previously published experimental theoretical results single plate.