AN INTEGRAL METHOD FOR TURBULENT BOUNDARY-LAYERS ON ROTATING-DISKS

An integral method for computing turbulent boundary layers on rotating disks has been developed using a power law profile for the tangential velocity and a new model for the radial profile. A similarity solutio n results from the formulation. Radial transport, boundary layer growt h, and drag on the disk were computed for the case of a forced vortex freestream flow. The results were compared to previous similarity solu tions. The method was extended to a Rankine vortex freestream flow. Di fferential equations for boundary layer parameters were developed and solved for different Reynolds numbers to look at the net entrainment, boundary layer growth, and drag on the disk.