Numerical investigation of the effects of wall heating and cooling on the nonlinear transition stages for a sharp cone at Mach 6

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Direct Numerical Simulations (DNS) were carried out to investigate the effect of wall heating and cooling on the primary and secondary instability regimes for a 7 half-angle straight (right) cone at Mach 6 and zero angle of attack. Typical flow conditions of the Boeing/AFOSR Mach 6 Quiet Tunnel (BAM6QT) at Purdue University was used for the numerical investigations. As expected, regarding the primary wall cooling resulted in a destabilization of the second mode and a stabilization of the first mode, while wall heating had the opposite effect. Wall cooling resulted in a slight reduction of the nonlinear primary wave saturation amplitudes. Wall heating changed the saturation behavior significantly. While for the reference (Tw = 300 K) and cooled wall cases the maximum second mode (saturation) amplitude remains nearly constant after saturation onset, the amplitude continued to increase in the heated case, although at a significantly reduced growth rate compared to the linear stage. In addition, grid convergence investigations showed that for a heated wall case a substantially finer grid resolution is required to accurately capture the primary wave (nonlinear) saturation process. The secondary instability investigations indicated that wall cooling results in larger secondary amplification rates.

Original languageEnglish (US)
Title of host publicationAIAA SciTech Forum 2022
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624106316
DOIs
StatePublished - 2022
Externally publishedYes
EventAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022 - San Diego, United States
Duration: Jan 3 2022Jan 7 2022

Publication series

NameAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022

Conference

ConferenceAIAA Science and Technology Forum and Exposition, AIAA SciTech Forum 2022
Country/TerritoryUnited States
CitySan Diego
Period1/3/221/7/22

ASJC Scopus subject areas

  • Aerospace Engineering

Fingerprint

Dive into the research topics of 'Numerical investigation of the effects of wall heating and cooling on the nonlinear transition stages for a sharp cone at Mach 6'. Together they form a unique fingerprint.

Cite this