Abstract
In the present study, the numerical and experimental flow visualization of the jet fl ow issuing from the orifice for repeated spool valve opening and closing are conducted. The discrete-vortex method is employed as the numerical simulation. A two-dimensional model of the spool valve is designed to visualize the jet flow using the hydrogen bubble method. A digital image- processing technique for the image obtained by a CCD camera is employed. The computational results and the experimental ones are compared, and jet angles and the process of jet flow development are considered.
