Development of Doppler global velocimetry as a flow diagnostics tool

Abstract

The development of Doppler global velocimetry is described from its inception to its use as a flow diagnostics tool. Its evolution is traced from an elementary one-component laboratory prototype, to a full three-component configuration operating in a wind tunnel at focal distances exceeding 15 m. As part of the developmental process, several wind tunnel flow field investigations were conducted. These included supersonic flow measurements about an oblique shock, subsonic and supersonic measurements of the vortex flow above a delta wing, and three-component measurements of a high-speed jet. 1. Introduction In 1991, Komine ## ## (1991) presented a new approach to global velocity measurements. Thistechnique########################hadthe potential to provide global, three-component, velocity measurements at video frame rates using standard video cameras. If this technology can be developed into a wind tunnel flow measurement system, experimental data could be obtained with grid spacings ...