Computational verification of acoustic damping in high-enthalpy environments

Ross Wagnild, Graham V. Candler

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The motivation for studying acoustic propagation in high enthalpy environments lies partially in the role that acoustics play in promoting laminar-turbulent boundary-layer transition. At high speeds, boundary-layer transition on slender-body vehicles is primarily due to Mack's second-mode instability. If the growth of disturbances is sufficiently reduced, then laminar- turbulent boundary-layer transition could be delayed or prevented. In many cases, maintaining laminar flow over a high-speed vehicle is beneficial because a laminar boundary layer exerts significantly less heating and shear forces on the vehicle than a turbulent boundary layer. Accurately capturing the physics of transition would allow for a more precise prediction of the transition location. Less uncertainty in the transition location would then allow for optimization of thermal protection systems and design of high-speed vehicles. Thus, it is important to understand the interaction of an acoustic wave with a high-enthalpy flow environment.

Original languageEnglish (US)
Pages (from-to)2615-2618
Number of pages4
JournalAIAA journal
Volume52
Issue number11
DOIs
StatePublished - Nov 1 2014

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