Numerical Simulation on the Infrared Radiation Characteristics of 2-D Converged Nozzles with Different Trailing Edge

摘要：

According to discrete transfer method in numerical calculation of the infrared radiation characteristics, an infrared radiation intensity calculation software was independently developed in this paper, simultaneously the accuracy of the software was verified by published experiment data. On this basis, combined with the flow field calculation of the two dimensional (2D) nozzle, spatial distribution law of the 3-5μm and 8 - μm wave band infrared radiation intensity on the backward of the 2D converged nozzles with four different spout edges was investigated, and then the results were compared with that of a normal 2D converged nozzle. It is shown that the angular orientation distribution of the infrared radiation intensity obviously concentrates on wide side of the 2D converged nozzle with normal exit. On narrow side of the 2D converged nozzle, angular orientation distribution of the infrared radiation intensity is similar to that of normal converged nozzles. Spatial infrared radiation intensity distribution law of the 3 -5μm wave band and 8-14μm wave band is basically the same.

关键词： 2-D nozzle infrared radiation characteristics numerical calculation computational fluid dynamics (CFD) discrete transfer method

作者: LI Yue-feng YANG Qing-zhen LI Xiang HUAN Xia

作者单位: School of Power and Energy,Northwestern Polytechnical University,Xian, China

会议类型: 国际会议

会议名称: 4th International Symposium on Jet Propulsion and Power Engineering(第四届喷气推进与动力工程国际会议 ISJPPE2012)

会议地点: 西安

会议语种:英文

页码: 708-713

在线出版日期: 2012-09-10（万方平台首次上网日期，不代表论文的发表时间）