Accession Number : AD0430710

Title :   AN EXPERIMENTAL INVESTIGATION OF LAMINAR HYPERSONIC CAVITY FLOWS,

Corporate Author : PRINCETON UNIV N J

Personal Author(s) : Nicoll,K. M.

Report Date : JAN 1964

Pagination or Media Count : 44

Abstract : An experimental investigation was made of the recovery factor and heat-transfer distributions on a set of cone-models incorporating annular cavities. This study is the second part of a two-part program. The first section contained measurements of the pressure distributions. The results show that the recovery factor in laminar, hypersonic cavity flow is almost constant within the cavity and downstream of reattachment, and is very close to the laminar attached-flow value. In the immediate vicinity of reattachment, the recovery factor is slightly higher than this value (less than 5%). The lowest values of the heat-transfer coefficient are found on the cavity floors, where a minimum of about 10 to 20% of the attached-flow value is reached. The highest values of the heat-transfer coefficient are in the immediate vicinity of reattachment. An average reattachment heattransfer coefficient of about three times the basic cone heat-transfer coefficient was measured on one cavity model. (Author)

Descriptors :   (*HYPERSONIC FLOW, CONICAL BODIES), HEAT TRANSFER, LAMINAR FLOW, SEPARATION, WIND TUNNEL MODELS, HEAT TRANSFER COEFFICIENTS, HELIUM

Distribution Statement : APPROVED FOR PUBLIC RELEASE