A computational investigation has been conducted to examine the effect of passive control on the transonic wing flowfield. The effect of passive control was included through the use of a porous surface over a vent chamber on the upper surface of a wing. The passive control was numerically simulated by the use of a linear form of the Darcy pressure law. The solutions of the three-dimensional Euler equations were generated using the finite volume multistage Runge-Kutta time-stepping scheme. The computational results indicated that the fundamental behavior of passive control is two dimensional in nature, but spanwise variations of the passive control effect exist.
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Kim et al. (1995) studied this question.
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