Experimental investigation of a supersonic swept ramp injector using laser-induced iodine fluorescencePlanar measurements of injectant mole fraction and temperature have been conducted in a nonreacting supersonic combustor configured with underexpanded injection in the base of a swept ramp. The temperature measurements were conducted with a Mach 2 test section inlet in streamwise planes perpendicular to the test section wall on which the ramp was mounted. Injection concentration measurements, conducted in cross flow planes with both Mach 2 and Mach 2.9 free stream conditions, dramatically illustrate the domination of the mixing process by streamwise vorticity generated by the ramp. These measurements, conducted using a nonintrusive optical technique (laser-induced iodine fluorescence), provide an accurate and extensive experimental data base for the validation of computation fluid dynamic codes for the calculation of highly three-dimensional supersonic combustor flow fields.
Document ID
19900051608
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hartfield, Roy J. (Virginia Univ. Charlottesville, VA, United States)
Hollo, Steven D. (Virginia Univ. Charlottesville, VA, United States)
Mcdaniel, James C. (Virginia, University Charlottesville, United States)