Flow characteristics of laminar separation on surface-mounted ribs

The fluid flow characteristics of steady-state laminar flow over surface-mounted ribs was studied using the SIMPLE/HD finite-difference numerical scheme with uniform/nonuniform grid systems. Grid dependence of uniform/nonuniform systems was examined. Pressure and velocity distributions were obtained to define the pressure and friction coefficients. It appears that the variation of Reynolds number and the rib width-to-depth ratio is of significance on total drag. The results may provide further insight regarding flow behavior near rib-type roughened surfaces and have application to engineering problems.