Gortler Number Evaluation for Laminar Separated Hypersonic Compression Ramp Flow

Shibin Cao; Igor Klioutchnikov; Herbert Olivier

doi:10.2514/1.J059588

Gortler Number Evaluation for Laminar Separated Hypersonic Compression Ramp Flow

Shibin Cao, Igor Klioutchnikov, Herbert Olivier

Research output: Journal article publication › Journal article › Academic research › peer-review

6 Citations (Scopus)

Abstract

A study presents a linear scaling law for the separation bubble size, which is adopted from Burggraf. The ariation of the GoÄrtler number with the Mach number, unit Reynolds number, ramp angle, and wall temperature is shown. Finally, the influence of wall temperature on the flow separation and GoÄrtler number is discussed. While several scaling laws regarding the length of the separation bubble are available in the literature, a simple relation proposed by Burggraf on the basis of asymptotic theory has been widely used and validated. To validate the scaling law and apply it for the calculation of the GoÄrtler number, direct numerical simulation (DNS) is employed to study well-separated hypersonic compression ramp flows.

Original language	English
Pages (from-to)	3706-3710
Number of pages	5
Journal	AIAA Journal
Volume	58
Issue number	8
DOIs	https://doi.org/10.2514/1.J059588
Publication status	Published - 18 May 2020
Externally published	Yes

ASJC Scopus subject areas

Aerospace Engineering

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10.2514/1.J059588

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abstract = "A study presents a linear scaling law for the separation bubble size, which is adopted from Burggraf. The ariation of the Go{\"A}rtler number with the Mach number, unit Reynolds number, ramp angle, and wall temperature is shown. Finally, the influence of wall temperature on the flow separation and Go{\"A}rtler number is discussed. While several scaling laws regarding the length of the separation bubble are available in the literature, a simple relation proposed by Burggraf on the basis of asymptotic theory has been widely used and validated. To validate the scaling law and apply it for the calculation of the Go{\"A}rtler number, direct numerical simulation (DNS) is employed to study well-separated hypersonic compression ramp flows.",

author = "Shibin Cao and Igor Klioutchnikov and Herbert Olivier",

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AU - Cao, Shibin

AU - Klioutchnikov, Igor

AU - Olivier, Herbert

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PY - 2020/5/18

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N2 - A study presents a linear scaling law for the separation bubble size, which is adopted from Burggraf. The ariation of the GoÄrtler number with the Mach number, unit Reynolds number, ramp angle, and wall temperature is shown. Finally, the influence of wall temperature on the flow separation and GoÄrtler number is discussed. While several scaling laws regarding the length of the separation bubble are available in the literature, a simple relation proposed by Burggraf on the basis of asymptotic theory has been widely used and validated. To validate the scaling law and apply it for the calculation of the GoÄrtler number, direct numerical simulation (DNS) is employed to study well-separated hypersonic compression ramp flows.

AB - A study presents a linear scaling law for the separation bubble size, which is adopted from Burggraf. The ariation of the GoÄrtler number with the Mach number, unit Reynolds number, ramp angle, and wall temperature is shown. Finally, the influence of wall temperature on the flow separation and GoÄrtler number is discussed. While several scaling laws regarding the length of the separation bubble are available in the literature, a simple relation proposed by Burggraf on the basis of asymptotic theory has been widely used and validated. To validate the scaling law and apply it for the calculation of the GoÄrtler number, direct numerical simulation (DNS) is employed to study well-separated hypersonic compression ramp flows.

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Gortler Number Evaluation for Laminar Separated Hypersonic Compression Ramp Flow

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