Characterizing Laser-Generated Hot Spots for Receptivity Studies

Autor:	Terry R. Salyer, Steven P. Schneider, Steven H. Collicott
Rok vydání:	2006
Předmět:	Physics Hypersonic speed business.industry Direct numerical simulation Aerospace Engineering Mechanics Computational fluid dynamics Moving shock Interferometry Optical path Optics Supersonic speed business Ludwieg tube
Zdroj:	AIAA Journal. 44:2871-2878
ISSN:	1533-385X 0001-1452
DOI:	10.2514/1.13023
Popis:	Simple, well-characterized experimental perturbations are needed to validate CFD simulations of supersonic and hypersonic boundary-layer receptivity. A laser-generated hot-spot perturbation has been characterized and modeled, based on experiments in the Purdue University Mach-4 quiet-flow Ludwieg tube. The model provides a detailed density profile and time evolution for the perturbation, which consists of a hot spot and the surrounding weak shock. The model is validated by comparing simulated optical path differences to measurements from a high-sensitivity, high-bandwidth laser differential interferometer. CFD simulations are compared with receptivity experiments on a hemisphere to illustrate the usefulness of the perturbation model.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d5a6f0ec68afff07471e1dfc9c5607a7 https://doi.org/10.2514/1.13023 Zobrazit plný text záznamu