Flow and heat transfer in parallel channel attached with equally-spaced ribs, 3

The computer code for analysing the flow and heat transfer characteristics in a parallel channel with equally-spaced ribs, which was reported in the previous paper with numerical results in the range of Reynolds number from 10 to 250, was revised in order to eliminate the wiggles of the solution of finite difference equation contained convective and diffusive terms by the upwind-difference method. Using this code, numerical calculations were carried out in the range of Reynolds number from 150 to 850. The following were the results obtained: (1) The mean Nusselt number of a ribbed channel is about 10 at the upper wall and about 7.5 at the lower wall in the range of Reynolds number from 150 to 850. (2) The upwind-difference method is useful to eliminate the wiggles of the solution of a finite difference equation contained convective and diffusive terms. (author)