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ISSN Druckformat: 1064-2285
ISSN Online: 2162-6561
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THE EFFECT OF BLOCKAGE RATIO ON HEAT TRANSFER AND ENTROPY GENERATION IN PULSATING FLOW THROUGH PARALLEL BLUFF PLATES
ABSTRAKT
The effects of frequency and amplitude on the flow field, heat transfer, and entropy generation in pulsating flow through parallel bluff plates at two different blockage ratios are studied numerically using a finite volume approach on a nonuniform staggered grid domain. Diffusion and convection terms are discretized by using a central difference scheme. The semi-fractional step method [revised step method of Kim and Moin (1985)] is used to solve the Navier−Stokes equations. The results show that for a smaller blockage ratio at a low amplitude, the peak value of the mean surface pressure coefficient moves upstream and the local Nusselt number increases with the frequency. This phenomenon occurs also for a low frequency and an increased amplitude.