Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
661942 | International Journal of Heat and Mass Transfer | 2005 | 14 Pages |
Abstract
The SIMPLE-C scheme is used to solve the mass, momentum, energy conservation equations and turbulent k–ε equations with a two-layer model near wall for a fluid past a reciprocating circular ribbed channel when changing Reynolds number (4250–10,000), Grashof number (0–400,000,000), pulsating number (0–9.3) and cooling mediums. The average time-mean Nusselt number for the reciprocating circular ribbed channel can be 45–182% larger than that for the equivalent stationary smooth channel. The heat transfer enhancement produced by buoyancy for the reciprocating circular ribbed channel decreases as the pulsating number increases. The oscillating amplitude of Nusselt number with crank angle in the oil-cooling is less than in the water-cooling.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Horng-Wen Wu, Chin-Teck Lau,