.png){kind=icon}
返回
Numerical simulation for rarefied hypersonic flows over non-rectangular deep cavities
.png){kind=icon}
PRE
AI
DOI：10.1063/5.0102685.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
A comprehensive numerical study is performed to investigate rarefied hypersonic flows past various non-rectangular cavity configurations using the direct simulation Monte Carlo method with the effects of free-stream Mach numbers, high-temperature gas effects, and three-dimensional (3D) effects analyzed in depth. In this work, two groups of non-rectangular cavities are considered: one is the shallow-front type and the other is the shallow-rear type. The primary objective is to obtain insight into the flow characteristics and surface pressure on and heat flux to these non-rectangular cavities. Making the front or rear of the cavity shallower does not alter the flow characteristics inside the upper cavity too much, but it causes the vortex to not fill the entire cavity any longer. Instead, a dead-water region is formed in the bottom cavity, and this dead-water region becomes expanded as the front or rear of the cavity gets shallower. In addition, making the front or rear of the cavity shallower has little influence on surface pressure on and heat flux to the aft wall of the cavity, while it plays an important role in the distributions of surface pressure and heat transfer coefficients over the cavity floor. For the case of shallower-rear cavity, the surface pressure and heat flux at the right end of the cavity floor are as high as 2 and 20 times the rectangular-cavity value, respectively. Free-stream Mach number and high-temperature gas effects have a negligibly minor influence on flow characteristics inside the cavity, while 3D effects play an important role. In comparison with 2D cavities, 3D relieving effects in finite-span cavities prevent the external stream from penetrating deeper into cavities, leading to much smaller surface pressures on and heat fluxes to the cavity floors. Published under an exclusive license by AIP Publishing.
Keyword:
AERODYNAMIC SURFACE QUANTITIES
MONTE-CARLO-SIMULATION
TO-DEPTH RATIO
HEATING CORRELATIONS
SUPERSONIC FLOWS
SEPARATED FLOWS
IMPACT
期刊
IF:
4.3
论文数:
2.9W
被引数:
8.0W
机构
引用论文
Epidemiological investigation of a food-borne disease outbreak caused by Vibrio parahaemolyticus副溶血性弧菌 (Vibrio parahaemolyticus) 引起的食源性疾病暴发的流行病学调查.png)
IF0
PREAI
分享收藏Effects of the boundary-layer thickness at the cavity entrance on rarefied hypersonic flows over a rectangular cavityPHYSICS OF FLUIDS
PHYSICS OF FLUIDSIF4.3
PREAI
分享收藏
Metabolic and inflammatory profiles define phenotypes with clinical relevance in female knee osteoarthritis patients with joint effusionRheumatology
OAAI
RheumatologyIF0
OAAI分享收藏Seasonal distribution of total and pathogenic Vibrio parahaemolyticus in Chesapeake Bay oysters and waters总哈维氏弧菌（Vibrio parahaemolyticus）及其致病株在切萨皮克湾牡蛎和海水中的季节性分布
IF0
PREAI
分享收藏Monoclonal Antibodies to LipL32 Protect Against HeterologousLeptospiraspp. ChallengeHybridoma
HybridomaIF0
PREAI
分享收藏A detailed multiscale study of rotational-translational relaxation process of diatomic moleculesPHYSICS OF FLUIDS
PHYSICS OF FLUIDSIF4.3
PREAI
分享收藏
查看更多内容