Optical Technique and Image Processing Application in Microgravity Fluid Physics Based on Ground

摘要

In this paper, several techniques for fluid field measurement, such as Optical Interferometry and Particle Image Velocimetry (PIV) etc. are introduced. And their applications on the fluid physics experiment of simulation microgravity on the ground in the national microgravity laboratory are presented. To reduce the gravitational effect on the ground, the character sizes researched objects are generally very little. The measuring techniques of fluid mechanics have to be combined with micrology to carry out the measurement of little size.