A gradient-based aero-stealth optimization design method for flying wing aircraft

M Li, J Bai, L Li, X Meng, Q Liu, B Chen - Aerospace Science and …, 2019 - Elsevier
Flying wing layout has both favorable aerodynamic performance and outstanding radar
scattering characteristics, which is regarded as an ideal stealth aircraft layout. In this paper …

Fully local transition closure model for hypersonic boundary layers considering crossflow effects

L Qiao, J Xu, J Bai, Y Zhang - AIAA Journal, 2021 - arc.aiaa.org
A computational fluid dynamics (CFD) compatible and fully local transition closure model is
proposed for three-dimensional hypersonic boundary layers considering crossflow effects …

Cost-effective and high-fidelity method for turbulent transition in compressible boundary layer

J Lim, M Kim, S Kim, S Jee, D Park - Aerospace Science and Technology, 2021 - Elsevier
An efficient high-fidelity simulation approach is investigated for laminar-to-turbulent
transition in compressible boundary layer flow. This approach combines large-eddy …

Predicting distributed roughness induced transition with a four-equation laminar kinetic energy transition model

Z Liu, Y Zhao, S Chen, C Yan, F Cai - Aerospace Science and Technology, 2020 - Elsevier
A four-equation laminar kinetic energy transition model is developed to predict the
distributed roughness induced transition using local variables. Based on the laminar kinetic …

Stabilization of hypersonic boundary-layer instability using porous coatings under thermochemical nonequilibrium

KCK Uy, J Hao, R Zhao, CY Wen - Aerospace Science and Technology, 2023 - Elsevier
In this study, the suppression of the instability of the hypersonic boundary-layer transition
under thermochemical nonequilibrium (TCNE) using a porous coating configuration is …

An improved local correlation-based intermittency transition model appropriate for high-speed flow heat transfer

Z Liu, C Yan, F Cai, J Yu, Y Lu - Aerospace Science and Technology, 2020 - Elsevier
An improved local correlation-based intermittency transition model is developed for high-
speed flow heat transfer in this paper. Based on the intermittency transition model, two …

Hypersonic boundary layer transitions over a yawed, blunt cone

J Chen, S Dong, X Chen, G Xu, X Yuan - Aerospace Science and …, 2021 - Elsevier
The boundary layer transition process for a straight circular cone with angle of attack (AoA)
of 6° at Mach 6 was studied via high-resolution direct numerical simulations and stability …

Quantification of parametric uncertainty in k–ω–γ transition model for hypersonic flow heat transfer

Y Zhao, H Liu, Q Zhou, C Yan - Aerospace Science and Technology, 2020 - Elsevier
The uncertain empirical values of closure coefficients in k–ω–γ transition model flaws the
predictive capability. The current work aims to examine the uncertainty of k–ω–γ transition …

[HTML][HTML] 基于当地变量的横流转捩预测模式研究进展

徐家宽, 段毅, 杨家盛, 乔磊, 刘建新, 白俊** - 气体物理, 2023 - pubs.cstam.org.cn
边界层转捩预测一直是流体力学领域的研究热点和难点. 其中, 横流转捩是飞行器表面转捩现象
中关键的一种. 由于受到来流扰动, 壁面粗糙度, 壁面压力梯度, 当地后掠角, 横流特征Reynolds …

Uncertainty and sensitivity analysis of flow parameters for transition models on hypersonic flows

Y Zhao, C Yan, H Liu, K Zhang - International Journal of Heat and Mass …, 2019 - Elsevier
The impossibility to reproduce the experimental conditions, which is difficult to perfectly
control and inevitably fluctuate, raises the uncertainties in numerical simulation. The …