Experimental Investigation of Centrifugal Flow in Rotor–Stator Cavities at High Reynolds Numbers >108

The designers of radial turbomachinery need detailed information on the impact side chamber flow axial thrust and torque. A previous paper investigated centripetal through narrow rotor–stator cavities compared thrust, rotor torque pressure distribution to case without through-flow. Consequently, this extends range centrifugal through-flow as it may occur in hub turbomachinery. chosen operating conditions are representative high-pressure compressors used in, for example, carbon capture storage applications well hydrogen compression. To date, only Reynolds number up Re=2·107 has been This numbers Re=2·108 reports results experimental numerical investigations. It focuses cavity shows influence number, width mass rate. therefore available valid data that can be design Additionally, analysis compares models from scientific literature, showing higher range, a new correlation is required. Finally, velocity profiles wall shear delineates switch purely outflow inflow stator at high comparison reported by others Re=2·107.