ISSN Online: 2377-424X
ISBN Print: 0-89116-299-2
International Heat Transfer Conference 7
HEAT-TRANSFER NON-UNIFORMITIES DOWNSTREAM OF THREE-DIMENSIONAL BOUNDARY LAYER TRIPS
Abstract
Heat transfer data downstream of three-dimensional
trips were obtained at Mach 8 on a spherically-blunted cone having a semi-vertex angle of 9 degrees. Data were obtained for a range of trip heights, trip element circumferential spacing, model nose radius, and Reynolds number. Results are presented in the form of heat transfer maps as well as graphs of circumferential heat
transfer variation at selected axial locations.
Circumferential variations in heat transfer of up
to 100 percent were measured at lower Reynolds numbers'
however, the variation reduced to 20 percent
at higher Reynolds corresponding to fully tripped
flow. Oil flow photographs obtained during the
tests are included, which show patterns indicative
of longitudinal vortices.