基于Flowmaster的多喷嘴引射器建模与仿真

系统仿真学报 ›› 2016, Vol. 28 ›› Issue (2): 410-415.

基于Flowmaster的多喷嘴引射器建模与仿真

兰江, 朱磊, 赵竞全

北京航空航天大学航空科学与工程学院,北京 100191

收稿日期:2014-09-23 修回日期:2014-12-18 出版日期:2016-02-08 发布日期:2020-08-17
作者简介:兰江(1984-),男,吉林四平,博士生,研究方向为飞机环境控制系统部件及系统的设计和仿真;朱磊(1981-),男,河南开封,讲师,博士,研究方向为飞行器环境控制、预测与健康管理技术、机电系统综合管理等。

Modeling and Simulation of Multi-nozzle Ejector based on Flowmaster

Lan Jiang, Zhu Lei, Zhao Jingquan

School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

Received:2014-09-23 Revised:2014-12-18 Online:2016-02-08 Published:2020-08-17

摘要/Abstract

摘要： 根据质量守恒、能量守恒和动量守恒建立了多喷嘴引射器的数学模型,并引入动量修正系数和流量系数对其进行修正。在此基础上,以流体系统仿真软件Flowmaster为平台,确定了适用于流体网络法的线性化系数,进而用C#语言首次二次开发了适用于系统级仿真的多喷嘴引射器仿真模型。某型飞机环境控制系统中多喷嘴引射器的仿真和试验结果表明,引射系数随着主、次流压比的增大而减小。主、次流质量流量和引射系数的仿真值与试验值之间的相对误差分别在0.05%~2.74%, 2.59%~6.64%和1.20%~7.77%之间,验证了仿真模型的准确性。

关键词: 引射器, 多喷嘴, 数学建模, 仿真模型, 流体网络

Abstract: A mathematical model of multi-nozzle ejector was established according to the mass conservation, energy conservation and momentum conservation, and a modification was achieved with the introduction of momentum correction coefficient and discharge coefficient. On this basis, linear coefficients used in the fluid network method were determined, then a system-level simulation model of multi-nozzle ejector was first developed with C# language on the fluid system simulation software of Flowmaster. The simulation and experimental results of the multi-nozzle ejector in an aircraft environmental control system shows that the entrainment ratio decreases with the increasing pressure ratio of primary and secondary flow. The relative error between the simulation and experimental values of primary mass flow rate, secondary mass flow rate and entrainment ratio are respectively 0.05%-2.74%、2.59%-6.64% and 1.20%-7.77%, which verifies the accuracy of the simulation model.

Key words: ejector, multi-nozzle, mathematical modeling, simulation model, fluid network

中图分类号:

V245.3+4

兰江, 朱磊, 赵竞全. 基于Flowmaster的多喷嘴引射器建模与仿真[J]. 系统仿真学报, 2016, 28(2): 410-415.

Lan Jiang, Zhu Lei, Zhao Jingquan. Modeling and Simulation of Multi-nozzle Ejector based on Flowmaster[J]. Journal of System Simulation, 2016, 28(2): 410-415.

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