论文信息 - Effect of variations in Streamwise Spacing and Length on convection from Surface-Mounted Rectangular Components

Effect of variations in Streamwise Spacing and Length on convection from Surface-Mounted Rectangular Components

The effect of variations in streamwise spacing and component length on convection from rectangular, surface-mounted components in a channel flow are reported. Component dimensions are the same order of magnitude as the channel wall-to-wall spacing. The channel Reynolds number, with air as the coolant, ranged from 670 to 3000. Flow visualization showed that under the above conditions the channel flow is transitional. The effect of variations in component streamwise spacing on the level of turbulence in the channel and on the interaction between the core of the channel flow and the recirculating flow in cavities between components is discussed. Pressure drop measurements show that the dominant loss mechanism is due to form drag caused by the components. Local heat transfer measurements are made using an interferometer. Analysis of the results shows that the overall heat transfer is properly correlated in terms of a flow Reynolds number based on the component length. At small-component Reynolds number, the o...

R. A. Wirtz | G. L. Lehmann

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