ISSN Online: 2377-424X
International Heat Transfer Conference 4
HEAT TRANSFER IN THE STARTED SUPERSONIC AXISYMMETRIC PARALLEL DIFFUSER
摘要
A theoretical and experimental investigation is reported of heat transfer in the started supersonic axisymmetric parallel diffuser. The measurements indicate broad correspondence between wall static pressure and heat-transfer distributions along the duct, particularly in the separated and reattachment regions near the diffuser entry. Downstream of reattachment the flow develops as in the entry region of a circular-section tube in reverse. Predicted distributions of wall heat-transfer coefficient based on a pseudo-shock model accord well with measurements for diffuser entry Mach numbers from 1.5 to 1. 7 when St. Reh20.25 is assumed constant at 0. 016.