论文标题
在同质和分层环境中经过倾斜的球体
Flow past an inclined spheroid in homogeneous and stratified environments
论文作者
论文摘要
进行大涡模拟（LES）以研究以$α= 10^{\ circ} $的入射角的6：1岩体球体的流动。基于直径的雷诺数（$ re = u _ {\ infty} d/ν$）的值为$ 5 \ times10^{3} $，基于直径的四个值（$ fr = u_ \ fr = u_ \ infty/nd $）的值分析：$ fr = \ fr = \ fr = \ fr = \ fr = \ fr = \ fr = \ fr = \ fr = \ 6，6，1.9，1.9，1.9，1.9，1.9，1.9，1.9，1.9，1.9，1.9，1.9，1 $ 1 $ 1。压力系数（$ c_p $）和摩擦（$ c_f $）轮廓的可视化均显示出$ fr = \ infty $和$ 6 $流的不对称性，而$ fr = 1 $ = 1 $ and $ fr = 1.9 $，身体上的流量没有任何可见的不对称。通过分析体内的力系数，进一步证实了这一发现。压力系数（$ c_p $），摩擦系数（$ c_f $）和拖动系数（$ c_d $）的更改详细描述了$α= 10^{\ circ} $的详细描述。我们还以$α= 0^{\ circ} $与$α= 10^{\ circ} $ case进行比较的入射率分析。
Large-eddy simulations (LES) are performed to study the flow past a 6:1 prolate spheroid placed at an angle of incidence of $α= 10^{\circ}$. The diameter-based Reynolds number ($Re = U_{\infty}D/ν$) is set to a value of $5\times10^{3}$ and four values of diameter-based Froude numbers ($Fr = U_\infty/ND$) are analyzed: $Fr = \infty, 6, 1.9,$ and $1$. Visualizations of coefficient of pressure ($C_p$) and friction ($C_f$) contours reveal asymmetry in the $Fr = \infty$ and $6$ flows while, at $Fr = 1$ and $Fr = 1.9$, the flow over body does not have any visible asymmetry. This finding is further corroborated through the analysis of force coefficients on the body. The changes in the pressure coefficients ($C_p$), friction coefficients ($C_f$), and drag coefficients ($C_d$) with the Froude number are described in detail for $α= 10^{\circ}$. We also present the analyses of forces on the body at $α= 0^{\circ}$ angle of incidence for comparison with the $α= 10^{\circ}$ cases.
