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Maximization of the Lift Coefficient of Airfoils Equipped with Active Flow Control Devices

机译：配备主动流控制装置的机翼升力系数的最大化

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摘要

We state and solve an optimization problem of finding a shape of airfoils with a separation-free flow about them that are characterized by the external flow part extraction and propulsive jet ejection to achieve the maximum lift coefficient. An approach to this problem solution is based on the theory of inverse boundary-value problems of aerohydrodynamics. The initial problem with limitations is reduced by the penalty function method to a problem of unconditional optimization, the solution of which is obtained by the conjugate gradient method. The examples of constructing such airfoils with a separation-free flow about them are presented and the conclusions are made that it is rational to use the flow control devices to increase the lift coefficient. The results of numerical calculations are compared with data obtained in the Fluent CFD software.
机译：我们陈述并解决了一个优化问题，即找到一种具有无分离流的翼型形状，这些翼型的特征在于外流部分提取和推进射流喷射以达到最大升力系数。解决这一问题的方法是基于空气动力学的反边值问题理论。有限制的初始问题通过罚函数方法被简化为无条件优化的问题，该问题的解决方案通过共轭梯度法获得。给出了构造具有无分离流的翼型的实例，并得出结论，合理地使用流控制装置来增加升力系数。将数值计算的结果与Fluent CFD软件中获得的数据进行比较。

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