Receptivity of Mack modes to localized unsteady blowing and suction in a chemical non-equilibrium hypersonic boundary layer

Yuan, Qingjiang; Song, Runjie; Dong, Ming

doi:10.1007/s10409-023-23485-x

Acta Mech. Sin.

2024

DOI: 10.1007/s10409-023-23485-x

|View full text |Cite

Receptivity of Mack modes to localized unsteady blowing and suction in a chemical non-equilibrium hypersonic boundary layer

Qingjiang Yuan,

Runjie Song,

Ming Dong

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

An asymptotic theory formulating the surface ablation impact on Mack modes in high-enthalpy hypersonic boundary layers

Yuan,

Dong

2024

Physics of Fluids

View full text Add to dashboard Cite

Surface ablation induced by aerodynamic heating is a common phenomenon for high-speed cruising vehicles, impacting surface geometry, temperature distribution, and mass injection, all of which play crucial roles in the perturbation evolution and boundary-layer transition. This paper presents a high-Reynolds-number asymptotic theory to formulate the impact of a local surface ablation on the Mack-mode evolution in high-enthalpy hypersonic boundary layers. The mean-flow distortion induced by ablation is formulated by the compressible triple-deck formalism, incorporating the chemical non-equilibrium effect. Simultaneously, the distortion of the Mack mode is formulated by the multi-scale analysis, with an amplification factor quantifying the overall impact of the ablation. The asymptotic model distinctly separates the effects of the mean-flow distortion and the Mack instability property. The amplification factor is attributed to two main factors: a local scattering effect at the ablation region, primarily contributed by the indentation, and a successive adjustment of the Mack growth rate, mainly contributed by the temperature distribution. The study reveals that the Mack mode experiences enhancement by ablation when its frequency falls below a critical threshold but is suppressed for higher frequencies. Remarkably, the critical frequency aligns closely with the most unstable frequency within the second-mode frequency band.

show abstract

An asymptotic theory formulating the surface ablation impact on Mack modes in high-enthalpy hypersonic boundary layers

Yuan,

Dong

2024

Physics of Fluids

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Receptivity of Mack modes to localized unsteady blowing and suction in a chemical non-equilibrium hypersonic boundary layer

Cited by 1 publication

References 43 publications

An asymptotic theory formulating the surface ablation impact on Mack modes in high-enthalpy hypersonic boundary layers

An asymptotic theory formulating the surface ablation impact on Mack modes in high-enthalpy hypersonic boundary layers

Contact Info

Product

Resources

About