室内发动机试车台推力校准的数值研究.pdfVIP

29 卷 6 期 Vol.29 No.6 工 程 力 学 2012 年 6 月 June 20 12 ENGINEERING MECHANICS 308 文章编号：1000-4750(2012)06-0308-06 室内发动机试车台推力校准的数值研究 1 1 2 2 张 章 ，侯安平 ，脱 伟 ，夏爱国 (1. 北京航空航天大学航空发动机气动热力重点实验室，北京 100191 ；2. 北京航空工程技术研究中心，北京 100076) 摘 要：运用数值模拟手段实现了额定状态、最大状态和全加力状态下某室内发动机试车台推力的气动校准，并 初步验证了计算准确性。结果表明：数值计算较好地模拟了室内发动机试车台内气流的流动情况，各部分修正阻 力在变化趋势和数值范围上合理可信；大流量状态下进气冲量对推力校准的影响最为显著，喷口阻力和进气道附 加阻力也有一定的影响。 关键词：航空发动机；室内试车台；数值模拟；推力；气动校准 中图分类号：V231.3 文献标志码：A doi: 10.6052/j.issn.1000-4750.2010.09.0650 NUMERICAL SIMULATION ON THRUST CORRECTION OF AN AERO-ENGINE IN INDOOR ENGINE TEST CELL 1 1 2 2 ZHANG Zhang , HOU An-ping , TUO Wei , XIA Ai-guo (1. Chinese National Key Laboratory of Aerodynamics Thermodynamics on Aero-engine, Beijing University of Aeronautics and Astronautics, Beijing 100191, China; 2. Beijing Aeronautical Technology Research Center, 100076, China) Abstract: The thrust aerodynamic correction of an aero-engine in an indoor engine test cell is researched under the rating state, the maximum power state and the full afterburner state. The work is based on a 3D computational fluid dynamic (CFD) method with NUMECA software and it includes a preliminary validation about calculation accuracy. The results demonstrate that the flow of air in the indoor engine test cell is predicted successfully, and the thrust correction terms are reasonable and reliable in the trend and range of values. Under high engine mass-flow conditions, Inlet Momentum Drag has significant impact on thrust correction