PSE and Spatial Biglobal Instability Analysis of Reduced Scale and Flight HIFiRE-5 Geometry

2017 by Travis Kocian, Alexander Moyes, Daniel Mullen, Helen Reed. The purpose of this paper is to provide linear parabolized stability equation, nonlinear parabolized stability equation, and secondary instability analysis within a hypersonic boundary layer using the in-house stability code EPIC and a spatial biglobal code. The geometries being investigated are the full-scale and 38.1% scale HIFiRE-5 models. The objectives are to match ight conditions experienced by the most recent HIFiRE-5 test flight as well as to investigate the 38.1% scale model for wind tunnel comparison. Three- dimensional instabilities are investigated with the linear parabolized stability equations and further nonlinear and secondary instability analysis is performed for stationary crossow. N-factors of the type-I and type-II secondary instabilities show that they become the dominant mechanisms in the nonlinearly modified owfield. Results for the two configurations of the HIFiRE-5 geometry that are presented in this paper will provide insight for the future computational and experimental work at Texas A&M University.

PSE and Spatial Biglobal Instability Analysis of Reduced Scale and Flight HIFiRE-5 Geometry Conference Paper