Large eddy simulation of supersonic flow in ducts with complex cross-sections

Chen, Huifeng; Sun, Mingbo; Xiong, Dapeng; Yang, Yixin; Wang, Taiyu; Wang, Hongbo

doi:10.1016/j.taml.2023.100469

Theoretical and Applied Mechanics Letters

2023

DOI: 10.1016/j.taml.2023.100469

|View full text |Cite

Large eddy simulation of supersonic flow in ducts with complex cross-sections

Huifeng Chen,

Mingbo Sun,

Dapeng Xiong

et al.

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...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Study on secondary motions in supersonic boundary layers of a bent pipe

Chen,

Liang,

Yang

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

The present study employed direct numerical simulation to investigate the supersonic flow of Mach 3 in a bent pipe with a curvature of 0.0825, elucidating the dynamic mechanism of secondary motions within the turbulent boundary layer. The findings indicate that the compressible flow, affected by the wall curvature, is differentiated into several motion patterns as the bending angle increases: a portion of the outer fluid close to the wall, driven by the circumferential pressure gradient, moves inward through the lateral wall, causing an increase in the mass rate toward the lateral boundary layer and promoting the circumferential transport of energy and vorticity; other outer fluids at the start of the bent section, due to the centrifugal force, approach the wall to form a thinner boundary layer downstream; meanwhile, the fluid near the inner wall experiences the expansion, followed by the flow separation and reattachment at a bending angle of 14.6° and 22.0°, respectively, which induce a shear layer that develops from the inner end point toward the mainstream center, gradually reshaping the high-speed flow area within the pipe cross section into a U-shape, and enhancing the vorticity and temperature field of the inner region. Additionally, this study reveals a remarkable phenomenon that the separated flow in a localized inner region forms a rotating field, inducing vortices distinct from the mainstream Dean vortices in the low-speed flow region enclosed by the shear layer.

show abstract

Study on secondary motions in supersonic boundary layers of a bent pipe

Chen,

Liang,

Yang

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

show abstract

The Law of the Total Pressure Loss in Supersonic Streamwise Corner Flow

Yang,

Jin,

Zhao

2024

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

The total pressure loss is a critical issue in the design of internal flow channels for hypersonic vehicles. In the flow through the streamwise corner region, the adjacent walls induce secondary flows that exacerbate the viscous effects, thereby intensifying the total pressure loss. This study investigates the impact of the corner’s dihedral angle and the compressibility of the flow on the total pressure loss in the streamwise corner region. The results indicated that as the dihedral angle increases, the distribution of the total pressure contour in the corner region became significantly distorted. The proportion of the boundary layer area within the corner region concurrently increased as the dihedral angle deviates from 90 degrees. Furthermore, we deduce that the total pressure loss is the largest in the supersonic flat plate boundary layer. This paper normalized the total pressure loss coefficient for different dihedral angles in the corner region and established an empirical relationship for the distribution of normalized total pressure loss coefficients along the flow path. It is discovered that under supersonic inflow conditions, the distribution law of the total pressure loss in the corner region exhibits higher predictive accuracy.

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.

Large eddy simulation of supersonic flow in ducts with complex cross-sections

Cited by 2 publications

References 49 publications

Study on secondary motions in supersonic boundary layers of a bent pipe

Study on secondary motions in supersonic boundary layers of a bent pipe

The Law of the Total Pressure Loss in Supersonic Streamwise Corner Flow

Contact Info

Product

Resources

About