Modeling of Twin-Entry Radial Turbine Performance Characteristics Based on Experimental Investigation Under Full and Partial Admission Conditions.

In this paper, the performance of a turbocharger twin-entry radial in ow turbine is investigated analytically and experimentally under steady state, full and partial admission conditions. in this modeling, the mass flow rate, pressure ratio and efficiency of the turbine are assumed unknown. the turbine geometry and the inlet total pressure and temperature are known, hence, the turbine performance characteristics can be obtained. in the turbocharger laboratory, performance characteristics of the turbine are determined, measuring the main parameters for various operating conditions. comparing the model and experimental results shows good agreement. also, considering the effect of test parameters on performance uncertainty, it shows that the pressure ratio has more influence. finally, the uncertainty of efficiency decreases as the pressure ratio increases.