Flow Coefficient and Starting Performance Prediction of Variable Geometry Curved Axisymmetric Inlet

With the development of combined cycle engines, it is urgent to estimate more quickly and accurately flow capture capacity starting performance variable geometry inlets over a wide Mach number range. Based on field parameter fitting, two prediction methods for curved axisymmetric inlet with lip translation scheme have been proposed. The method based reference efficient than parameters-based method, as can predict distance corresponding coefficient entire working range without additional numerical calculations. Moreover, predicted by fitting throat inlet, relative error only 0.95% compared simulation. coefficient-based simple accurate predicting distances known number, 1.65% simulations. approaches overcome drawbacks standard iterative algorithms significantly enhance computational accuracy efficiency.