The infrared radiation in 3~5�yμm band of the unforced plume and the forced plume which is mixed by injecting micro-jets into subsonic shear layer were calculated by a three-dimensional infrared(IR) radiation code of the plume, it was developed by the finite volume method (FVM) in non-gray absorbing-emitting media. The 3-D flow field of the jet was simulated numerically by FVM, Tam-Thies turbulence model. The results show that small injection flow rates (less than 3%) can make sharp increases in both velocity and temperature decay rates at middle Mach number. Compared with the unforced plume, when the jet mass flow accounts for 1% of the main flow, the IR radiation intensity of the forced plume is reduced by about 15%; and when the jet mass flow occupy 3%,the IR radiation intensity of the forced plume is decreased by about 27%.
Li Jiajun,Eriqitai.Mixing enhancement in round jet exhaust using pulsed blowing:3-D numerical simulations [J].Journal of Beijing University of Aeronautics and Astronautics,2007,33(7):773-776(in Chinese)
Tan Heping,Xia Xinlin,Liu Linhua,et al.Numerical calculation of infrared radiation characteristics and transmission—calculation radiology [M].Harbin:Harbin Institute of Technology Press,2006(in Chinese)
Dong Shikui,Yu Qizheng,Tan Heping,et al.Narrow band model parameters of high temperature radiation for carbon dioxide of combustion products[J].Journal of Aerospace Power,2001,��16(4)��:355-359(in Chinese)
Dong Shikui,Tan Heping,Yu Qizhang,et al.Infrared radiative spectral band-model parameters for water vapor in the 300~3000K temperature range[J].Journal of Engineering for Thermal Energy and Power,2001,16(91):33-38(in Chinese)
Young S J.Nonisothermal band model theory [J].J of Quantitative Spectroscopy and Radiative Transfer,1976,18:1-28
Ferziger J H,Peric M.Computational methods for fluid dynamics [M].Berlin:Springer,1996
Behrouzi P,McGuirk J J.Jet mixing enhancement using fluid tabs[R].AIAA 2004-2401,2004