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所属单位：能源与动力学院
发表刊物：Tuijin Jishu
摘要：In order to study the effects of transection transformation form on performance of serpentine 2-D exhaust system, three serpentine 2-D exhaust systems with different transection transformation forms which are A1 a rapid area change at the entrance and slow change at the exit, A2 a modest area change from the entrance to the exit, and A3 a rapid change at the exit and slow change at the entrance were built based on an axisymmetric exhaust system. These exhaust systems have the same length, centerline, inlet diameter, exit area and aspect ratio and all of them completely blocked the internal components such as turbine if viewed directly behind the exits. The effects of transection transformation form on thrust and infrared characteristics of three exhaust systems were studied numerically. The results show that, relative to the axisymmetric exhaust system, the thrust of A1, A2, A3 exhaust systems reduce by 3.8%, 3.1% and 2.7%, respectively. The integral infrared radiation intensity of these three exhaust systems have similar spatial distribution, and the maximum deviation among them is within 13.8%. Compared with the axisymmetric exhaust system, the integral infrared radiation intensity of all three serpentine 2-D exhaust systems reduces at least 97% in the direction right behind the exit of the nozzle, and reduces at least 66.8%, 30.2% and 34.1% in the direction vertical to the axis of the exit of the nozzle on the side, upper and lower detection planes respectively. In summary, the A3 serpentine 2-D nozzle has better performance considering both thrust and infrared characteristics. © 2017, Editorial Department of Journal of Propulsion Technology. All right reserved.
ISSN号：1001-4055
是否译文：否
发表时间：2017-01-01
合写作者：王定宇,刘常春,王亚骏
通讯作者：王丁,吉洪湖,王定宇