Turbulent Supersonic/Hypersonic Heating Correlations for Open and Closed Cavities

摘要

An analysis of existing supersonic/hypersonic zero-pressure-gradient rectangular-geometry cavity heating data isnpresented, yielding newturbulent open-flowand closed-flowcorrelations for the floor-averaged heating and the peaknendwall heating. Limited data recently acquired from the Space Shuttle Return-to-Flight Program were used tondevelop the closed-flow correlations. Historical data obtained fromthe literature, covering an extremely wide rangenof flowconditions and test facilities, were used to develop the open-cavity heating correlations. The correlationswerendeveloped using newparameters derived in terms of cavity geometry and local flowconditions.These parameters arenlinearly related with a linear correlation coefficient R2n, which exceeds 0.97 in all cases. Confidence-limit andnprediction-limit uncertainty values are provided at the 99%level of significance.