Abstract
A 1.1m long, 600K wall temperature flared cone (6m flare radius) at Arizona M5 conditions is considered for this analysis. The focus of this study is to investigate the nonlinear interactions within hypersonic boundary layers with the coexistence of Mack’s 1st and 2nd modes. Specifically, emphasis is placed on the interactions and energetics of the 1st mode, mean flow distortion (MFD) and the 2nd mode. It is found that as 2nd mode amplitudes are increased, the MFD significantly alters the 1st mode growth, indicating that the increased MFD from the 2nd mode disrupts energy flow from the mean flow to the 1st mode. Analysis is performed with nonlinear parabolized stability equations code (JoKHeR).
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