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Abstract

The response of higher-order velocity structure functions in flat plate turbulent boundary layer subjected to the effect of concentrated suction, apply through a single narrow porous wall strip have been examined using hot-wire anemometry methods. The results indicate that, the higher-order functions shows a greater sensitivity to a change in boundary conditions than the second-order functions suggesting that small scale motion follows a similar trend with large scale motion. However, relative to undisturbed layer, third and fourth-order structure functions of wall-normal velocity shows a greater departure than their longitudinal counterpart, reflecting a lower contribution to intermittency.