The paper presents the results of one stages creating a model assessing and forecasting operating characteristics transonic compressor due to erosive wear. A numerical stage is constructed verified substantiate its applicability in calculating various degrees blade article contains review basic approaches for turbulence simulation, their application area features connected with 3D-flow simulati...

Numerical simulations have been performed to study the effect of circumferential single-grooved casing treatment (CT) at multiple locations on tip-flow stability and corresponding control mechanism three tip-clearance-size (TCS) schemes in a transonic axial flow compressor rotor. The results show that CT is more efficient when its groove located from 10% 40% tip chord, G2 (located near 20% chor...

This study aimed to investigate the influence of bleeding position a self-circulating casing on aerodynamic performance transonic centrifugal compressor. Three types structures with positions 11% Ca (the axial chord length blade tip), 14% and 20% from leading edge were studied by using numerical simulation method, Krain impeller taken as research object. It was found that all three self-recircu...

This paper describes a modeling method and a new optimal control approach to investigate a Mach number control problem for the NASA Ames 11-Foot Transonic Wind Tunnel. The flow in the wind tunnel is modeled by the 1-D unsteady Euler equations whose boundary conditions prescribe a controlling action by a compressor. The boundary control inputs to the compressor are in turn controlled by a drive ...