Abstract
Unsteady flow field inside a torque converter model made of acrylic resign is measured using a dynamic stereo PIV system. The index-matching technique is used to visualize the flow field in the gap between an impeller and a turbine. The rotation speed of the impeller is 250rmp while those of the turbine are 25rmp and 150rpm, giving the speed ratios of 0.1 and 0.6, respectively. The instantaneous velocity maps obtained from the stereo PIV analysis are phase averaged according to the relative angles of the impeller, the turbine and the stator. Those phase averaged three-component velocity maps are reconstructed to visualize 3-D characteristics of this complex unsteady flow field.
