相関法による合流部剥離泡の非定常特性に関する検討

抄録

Unsteady features of the surface flow at an open-channel confluence were examined by using a correlation method which is one of image processing techniques. In this research, gray level intensities between the centers of respective pixels were efficiently interpolated to improve the accuracy. By applying the improved method, two-dimensional mean velocity and turbulent intensity distributions were obtained with a reasonable accuracy. And the effects of discharge ratios to the time-dependent features of the separation bubble and separated vortices were verified in detail.