The turbine is driven from the stream of oil sent to it through the pump. The oil enters the blade area near the rim and passes with the blades. The entire assembly is contained and linked to the engine flywheel. The torque converter clutch solves this by locking the turbine https://torqueconverterclutch08539.bloginder.com/34642086/indicators-on-torque-converter-clutch-you-should-know