Axial - flow impeller compressor can be used also as a highly swirling strong swirl generator, using its strong centrifugal field and large tangential velosity component, fully utilining the high flame propagation speed in swirling flow and the strong backflow, to organize swirl combustion.

The quick mixing principle of double swirl combustion system (DSCS) is discussed in this paper according to High Speed Photography tests and multidimension simulations of diesel fuel spray.