不可压缩与可压缩涡旋分离的比较：从平移和旋转板的流动中
Comparison of inviscid and viscous vortex shedding from translating and rotating plates
AI总结：
研究比较了无粘与可压缩涡旋分离模型在不同板运动下的性能，揭示了其在力预测和物理解释中的适用范围。
摘要：
我们比较了无粘涡旋片模型与连续前缘分离的直接纳维-斯托克斯模拟，在中等雷诺数（Re≈1000）下对广泛范围的不稳板运动进行了模拟。大约70种不同的运动配置被检查，涵盖了以体为主和以流为主的区域。在以体为主的情况下，其中流体动力学主要由规定的板加速度驱动，无粘模型准确地再现了法向力历史和诱导涡量场的定性结构。在以流为主的配置中，具有准周期性涡旋分离的情况下，与力预测的一致性良好，但在低攻角时有所降低，反映了涡旋分离动态对物理和计算参数的更大敏感性。当前公式能够容纳稳定、连续的前缘涡旋分离的能力，使在不同运动中能够进行统一的比较，并澄清了无粘涡旋片模型在力预测和物理解释中可以可靠使用的区域。
英文摘要：
We compare an inviscid vortex sheet model with continuous leading-edge shedding with direct Navier-Stokes simulations over a wide range of unsteady plate motions at moderate Reynolds number ($\mathrm{Re} \approx 1000$). Approximately $70$ distinct kinematic configurations are examined, spanning both body-dominated and flow-dominated regimes. In body-dominated motions, where the fluid dynamics are primarily driven by prescribed plate accelerations, the inviscid model accurately reproduces normal force histories and the qualitative structure of the induced vorticity field. In flow-dominated configurations, with quasi-periodic vortex shedding, agreement with force predictions is good but reduced at low angles of attack, reflecting the greater sensitivity of vortex shedding dynamics to physical and computational parameters. The ability of the present formulation to accommodate stable, continuous leading-edge vortex shedding enables uniform comparisons across diverse motions and clarifies the regimes in which inviscid vortex sheet models can be used reliably for force prediction and physical interpretation.
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