The mean flow of a laminar wall‐jet subjected to blowing or suction

The mean flow of an incompressible laminar two‐dimensional air wall jet subjected to boundary suction or blowing is investigated experimentally. Hot‐wire measurements of the streamwise mean velocity profiles, the downstream development of the local boundary‐layer thickness, and the local maximum streamwise velocity, confirm previous theoretical self‐similar solutions in which the vertical velocity at the wall varies as a power of the downstream distance.