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Addition of momentum and kinetic energy effects in supersonic compressible flow using pseudo bond graph approach

机译:利用伪键图方法在超声速可压缩流中增加动量和动能效应

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In most of the papers published on compressible fluid using pseudo the bond graph approach, momentum and kinetic energy effects have been neglected due to low speed. However, in convergent-divergent nozzles that the flow is supersonic, these models will lose their validation. For the purpose of considering kinetic energy in compressible fluid flow, this paper introduces a new field (KE-field) to pseudo bond graph. This field can also be used to extract the momentum equation on the gaseous models. Furthermore, Karnopp's suggested relation for an isentropic nozzle is developed to a convergent-divergent nozzle. The simulation results show that the thrust force obtained from the simulations has a very good agreement to analytical relationships. Therefore, it suggests that the KE-field can be used for modelling the thrust force. As bond graph method has been implemented in many software applications such as MS1, SYMBOLS2000 and 20SIM~®, the new field can also be used in these software.
机译:在大多数使用伪键图方法发表于可压缩流体的论文中,由于速度慢,动量和动能效应已被忽略。但是,在流量是超音速的收敛-发散喷嘴中,这些模型将失去验证。为了考虑可压缩流体流动中的动能,本文为伪键图引入了一个新的场(KE场)。该场也可以用于提取气态模型上的动量方程。此外,卡诺普关于等熵喷嘴的建议关系被发展为会聚-发散喷嘴。仿真结果表明,从仿真中获得的推力与解析关系具有很好的一致性。因此,这表明KE场可用于模拟推力。由于键合图方法已在许多软件应用程序中实现,例如MS1,SYMBOLS2000和20SIM®,因此新领域也可以在这些软件中使用。

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