Abstract
This paper describes measurement results of leading-edge separation-bubble length on a flat plate at low Reynolds numbers applying a luminescent oil film technique (GLOF), which allows us to calculate a quantitative reattachment point based on the skin friction vector. The present results are compared with previous experimental data obtained by a water channel and a low-density wind tunnel. A common trend that the separation-bubble length increases and gradually decreases with Reynolds number increasing is observed. However, the results have differences in the peak Reynolds number and separation bubble length even between wind tunnel data.
