軸対称物体まわりの剥離流の実験と画像速度計測の動向

抄録

Current experimental studies concerning three-dimensional separation around a body is discussed in the first half of this review. The evaluations of several measurement techniques are introduced such as laser-Doppler velocimetry, hotwire anemometry, surface hot film, surface pressure, as well as particle image velocimetry. In the second half, the experimental results by the present authors are discussed for the flow with separation over an axisymmetric paraboloid at 50 deg incidence angle at most where smoke visualization techniques and hot wire anemometer with X-type probe were employed. Reynolds numbers is at most 1. 8X 10⁴ referred to the base diameter. Velocity fluctuations and the change of r.m.s. value in various cross-sections are presented.