Discharge increment induced by groove in channel flow

Abstract eng:
Flow in channels with longitudinal grooves has been theoretically and numerically studied in the current work. The changes in discharge are monitored for the pressure driven flow to investigate the efficiency of fluid flowing through the channels in laminar and turbulent flow regimes. It has been shown that the long wavelength grooves induce discharge increase up to 3—9%, while the short wavelength grooves reduce the discharge. Analysis of the flow patterns demonstrates that the increase in discharge results from the re-arrangement of the bulk fluid movement.

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