The impeller is linked to the housing along with the housing connected to the motor shaft. It has curved and angled vanes. It rotates with the motor velocity and is made of automatic transmission fluid. When it rotates Using the engine, the centrifugal pressure would make the fluid move outward. https://torque-converter-clutch21851.bloggerchest.com/34170814/little-known-facts-about-torque-converter-clutch