Numerical studies are performed on rib-roughened, two-dimensional channel to determine the effects of rib shape, rib height to channel height ratio and Reynolds number on friction factor and heat transfer for a range of Reynolds number from 15,000 to 50,000. Only symmetric ribs on top and bottom walls are investigated. A body-fitted, finite-volume based numerical method is employed to solve the incompressible Navier-Stokes equations. The standard κ-ε model with wall function is employed to take account of the turbulence. The numerical predictions are compared with published experimental data by other researchers and the predictions agree qualitatively with the experiments. Further work to refine the turbulence model is in progress. With some additional efforts, the software developed for the present study could be used in the design of turbine airfoil cooling passages.
|Number of pages||5|
|State||Published - 1990|
|Event||Winter Annual Meeting of the American Society of Mechanical Engineers - Dallas, TX, USA|
Duration: Nov 25 1990 → Nov 30 1990
|Conference||Winter Annual Meeting of the American Society of Mechanical Engineers|
|City||Dallas, TX, USA|
|Period||11/25/90 → 11/30/90|