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Recent advances in numerical simulation and control of asymmetric flows around slender bodies

机译:细长体非对称流动数值模拟与控制的最新进展

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摘要

The problems of asymmetric flow around slender bodies and its control are formulated using the unsteady, compressible, thin-layer or full Navier-Stokes equations which are solved using an implicit, flux-difference splitting, finite-volume scheme. The problem is numerically simulated for both locally-conical and three-dimensional flows. The numerical applications include studies of the effects of relative incidence, Mach number and Reynolds number on the flow asymmetry. For the control of flow asymmetry, the numerical simulation cover passive and active control methods. For the passive control, the effectiveness of vertical fins placed in the leeward plane of geometric symmetry and side strakes with different orientations is studied. For the active control, the effectiveness of normal and tangential flow injection and surface heating and a combination of these methods is studied.
机译:细长体周围的非对称流动问题及其控制是使用非稳态,可压缩,薄层或完整的Navier-Stokes方程式提出的,这些方程式是使用隐式,通量差分裂,有限体积方案求解的。对局部圆锥形流动和三维流动均进行了数值模拟。数值应用包括研究相对入射,马赫数和雷诺数对流动不对称性的影响。为了控制流量不对称,数值模拟涵盖了被动和主动控制方法。对于被动控制,研究了放置在几何对称的背风平面中的垂直散热片和具有不同方向的侧翼的有效性。对于主动控制,研究了法向和切向流注入以及表面加热以及这些方法的组合的有效性。

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