Experimental investigation of high-pressure pulsed blowing for dynamic stall control

Examining the effect of annular injection on the parameters of the axial compressor’s stage

“…It was established experimentally and analytically that a gas-dynamic action on the traces makes it possible to reduce the level of vibrostrains in an impeller. Paper [4] analyzed efficiency of the pulse and continuous injection to enable stable operation of the compressor. Comparison of the results revealed that using a pulse injection was more efficient than the continuous injection.…”

“…Comparison of the results revealed that using a pulse injection was more efficient than the continuous injection. Articles [2][3][4] investigated effect of injection along the entire length of a blade through special openings. Implementing this method requires the use of blades of a complex design.…”

“…Results of studies [1][2][3][4][5][6][7][8][9][10] demonstrated effectiveness of gas-dynamic action on the current in a compressor. At the same time, there are still unresolved problems related to the choice of optimal parameters of the gas-dynamic action.…”

Delay of Dynamic Stall Using Pulsed Air-Jet Vortex Generators

“…Pulsed blowing experiments were described by [10] at the higher test Mach number of 0.3, and the issue of higher power requirements for pulsed blowing was raised as an important issue. The jet exit orifice shapes in this paper did not appear to be optimised in any way, but the approach was used for investigation of control of shock induced stall at higher Mach number in addition to dynamic stall.…”

Effects of Boundary Layer Control Method on Hydrodynamic Characteristics and Tip Vortex Creation of a Hydrofoil

“…Also, Gardner et al [24] experimentally measured the variation of stall angle caused by high-pressure blowing. Moreover, Zhang and Samtaney [25] employed Direct Numerical Simulation (DNS) to investigate the effects of frequency on the boundary layer separation control.…”