磁流体管流准一维模型的数值验证与性能分析

推进技术 ›› 2012, Vol. 33 ›› Issue (2): 306-312.

磁流体管流准一维模型的数值验证与性能分析

陈瑞锋,魏志军,王宁飞

北京理工大学宇航学院,北京 100081;北京理工大学宇航学院,北京 100081;北京理工大学宇航学院,北京 100081

发布日期:2021-08-15
作者简介:陈瑞锋(1982—),男,博士生,研究领域为磁流体能量旁路超燃冲压发动机。E-mail:chenruifeng82@tom.com

Validation and Performance Analysis for the Quasi-One-Dimensional Models of MHD Flows

School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China;School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China;School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

Published:2021-08-15

摘要/Abstract

摘要： 为了快速分析磁流体管流,采用涡轮喷气发动机模型对磁流体管流进行类比分析,引入变截面管流理论和修改过的多变效率表达式,推导了磁流体发电器和加速器的准一维模型,采用二维数值方法验证了准一维模型的可行性,利用该准一维模型对磁流体管流进行了性能分析,结果表明,多变效率的引入使准一维模型更加完整,当负载系数不变时,磁流体装置中的平均马赫数越低,其等熵效率越高。 

关键词: 涡轮发动机;磁流体;管流;准一维模型

Abstract: For the Purpose of quick analysis for the magnetohydrodynamic(MHD) flow,quasi-one-dimensional models for the MHD equipments have been deduced using the turbojet engine model, the variable cross-section pipe flow theory and the expressions of modified polytropic efficiencies. The feasibility of the quasi-one-dimensional models have been validated with the 2D numerical method. Then, the performance analysis has been performed with these quasi-one-dimensional models,which shows that the modified polytropic efficiencies make the models improved, and when the load factors is kept to be constant, the efficiencies of the MHD flow increase by decreasing the average Mach number.

Key words: Turbojet engine; MHD; Pipe flow; Quasi-one-dimensional models

陈瑞锋,魏志军,王宁飞. 磁流体管流准一维模型的数值验证与性能分析[J]. 推进技术, 2012, 33(2): 306-312.

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