6Davis M R. Variable Control of Jet Decay[ J ]. AIAA Journal. 1982,20(5 ) :606 - 609.
7Mi,J. Nobes,D. , and Nathan,G.J. hdluence of Jet Exit Con- ditions on the Passive Scalm Field of an Axisymmetrie Free Jet [J]. Journal of Fluid Mechmfics. 2006,548:17-48.