Letter to the Editor re Suspected Plagiarism

Abstract

Boundary-layer separation entails significant energy loss, increases flow unsteadiness and limits the performance of many flow devices. Not surprisingly, a substantial amount of research aimed at controlling boundary-layer separation [1, 2] has been conducted. Traditionally, the following approaches have been applied: a) tangential blowing to energize directly the low-momentum region near the wall [3-5]; b) wall suction [6, 7] to remove the low-momentum region; c) vortex generators (VGs and micro VGs) in the form of vanes and bumps [8, 9] and d) forced excitation devices, for example, acoustic excitation [10, 11]