流れの中に置かれた平板近傍の水平回転円柱からの熱伝達(熱工学,内燃機関,動力など)

概要

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An experimental study of heat transfer on a horizontal rotating cylinder near the flat plate was performed. The cylinder and plate are set in cross-flow. Temperature distribution and coefficients of local heat transfer were measured by Mach-Zehnder Interferometer. Flow visualization was made by smoke. Rotating Reynolds numbers (Re_r) and cross-flow Reynolds numbers (Re_d) were varied from 0 to 2000. The spaces between cylinder and plate were varied from 1×10^<-3>m to 5×10^<-3>m. The rotating direction of cylinder was changed clockwise or counterclockwise. The following results are obtained: When the space between rotating cylinder and flat plate is same as the displacement thickness on the plate, the heat transfer on the cylinder nearby plate has best performance. We have obtained empirical equation of heat transfer from a rotating cylinder near the flat plate in cross-flow.
2010-04-25