Physical modeling and correlation of separation length in hypersonic laminar ramp flows

Autor:	Lin Bao, Xian-Dong Li, Fang Fang
Rok vydání:	2021
Předmět:	Physics 020301 aerospace & aeronautics Hypersonic speed Disturbance (geology) Separation (aeronautics) General Physics and Astronomy Laminar flow 02 engineering and technology Mechanics 01 natural sciences 010305 fluids & plasmas Key factors 0203 mechanical engineering 0103 physical sciences
Zdroj:	Canadian Journal of Physics. 99:470-480
ISSN:	1208-6045 0008-4204
DOI:	10.1139/cjp-2020-0314
Popis:	To predict the separation length in hypersonic laminar flows over a ramp, the concepts of disturbance strength and anti-disturbance strength are introduced to characterize the key factors influencing boundary layer separation. It is found that the separation length is controlled by a normalized disturbance strength. Based on that, an analytical formula is derived to correlate the separation length with incoming flow conditions and ramp angle, which can predict the location of the separation under various flow and geometry conditions. The new correlation is compared to numerical simulations and experiments as well as the correlations in previous studies, confirming the suitability and effectiveness of the present analysis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c299a2f67431b0284440dd28a8b0b532 https://doi.org/10.1139/cjp-2020-0314 Zobrazit plný text záznamu Plný text ve formátu PDF