Laminar-to-turbulent transition in hypersonic boundary layer on a straight cone is numerically investigated in this study. High-fidelity simulation is performed with direct-numerical simulation (DNS) coupled with the linear stability theory (LST). This study focuses on the transition scenario of fundamental breakdown, driven by the two-dimensional Mack 2nd mode and a pair of oblique modes. The major instabilities in the hypersonic boundary layer are identified by LST and introduced at the DNS inlet. Current DNS computations successfully capture intrinsic transition phenomena, including aligned vortical structures and peak heat flux in the transition process, and complete transition to turbulent flow. Appropriate numerical dissipation associated with shock-capturing methods is investigated in this study because of the presence of a nose shock outside the boundary layer and compression waves from amplified instabilities inside the boundary layer. This numerical study is conducted with two shock sensors. A classical shock sensor generates excessive dissipation in the viscous boundary layer, which artificially delays the turbulent transition. The alternative sensor reduces the unintended dissipation, allowing flow to develop turbulence within the computational domain. Computational data are discussed with relevant experimental and theoretical data.
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March 2025
Research Article|
March 13 2025
High-fidelity simulation of laminar-to-turbulent transition in hypersonic boundary layer on a sharp cone
Minjae Jeong (정민재)
;
Minjae Jeong (정민재)
(Data curation, Formal analysis, Investigation, Methodology, Software, Validation, Visualization, Writing – original draft)
School of Mechanical and Robotics Engineering, Gwangju Institute of Science and Technology
, Gwangju 61005, South Korea
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Suhun Cho (조수훈)
;
Suhun Cho (조수훈)
(Data curation, Formal analysis, Investigation, Methodology, Software, Visualization)
School of Mechanical and Robotics Engineering, Gwangju Institute of Science and Technology
, Gwangju 61005, South Korea
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Youngwoo Kim (김영우)
;
Youngwoo Kim (김영우)
(Formal analysis, Investigation, Writing – original draft)
School of Mechanical and Robotics Engineering, Gwangju Institute of Science and Technology
, Gwangju 61005, South Korea
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Jaehyeon Park (박재현)
;
Jaehyeon Park (박재현)
(Data curation, Investigation, Writing – original draft)
School of Mechanical and Robotics Engineering, Gwangju Institute of Science and Technology
, Gwangju 61005, South Korea
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Solkeun Jee (지솔근)
Solkeun Jee (지솔근)
a)
(Conceptualization, Funding acquisition, Investigation, Project administration, Resources, Supervision, Writing – review & editing)
School of Mechanical and Robotics Engineering, Gwangju Institute of Science and Technology
, Gwangju 61005, South Korea
a)Author to whom correspondence should be addressed: [email protected]
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a)Author to whom correspondence should be addressed: [email protected]
Physics of Fluids 37, 034120 (2025)
Article history
Received:
December 31 2024
Accepted:
February 15 2025
Citation
Minjae Jeong, Suhun Cho, Youngwoo Kim, Jaehyeon Park, Solkeun Jee; High-fidelity simulation of laminar-to-turbulent transition in hypersonic boundary layer on a sharp cone. Physics of Fluids 1 March 2025; 37 (3): 034120. https://doi.org/10.1063/5.0255688
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