ACTA AERONAUTICAET ASTRONAUTICA SINICA >
Fluid-structure Interaction Simulation of the Flutter Phenomenon in Electromagnetic Valve
Received date: 2013-09-03
Revised date: 2014-04-23
Online published: 2014-04-24
Supported by
National Natural Science Foundation of China (11272074); Liaoning Provincial Natural Science Foundation of China (201202033)
The instability phenomena occurring in the ground test of the electromagnetic valve of the liquid rocket's high pressure feed system are studied in the fluid-structure interaction simulation. The solid structure is modeled by the mass-spring damper which only has one degree of freedom and is solved by the Newmark method. The fluid is governed by the three-dimensional Euler equation and is solved by the ALE (Arbitrary Lagrangian-Eulerian) finite volume schemewhich is based on the spring analogy dynamic mesh. The flow field solver employes a newly developed geometric conservation law and a new fluid-structure interface scheme. The flow field topology transition induced by the electromagnetic valve charging/discharging is simulated by the virtual baffle technique. The effectiveness and accuracy of the proposed solver are verified by the verification example. The breakdown of the feed system which occurred during the ground test reappeared in the numerical simulation, which is identified as the flutter phenomena of the feed system. We draw the conclusion that the key factor that influences the excitation force frequency of the gas flow is the pipeline length between the electromagnetic valve and the pressure regulator valve.
LIU Jun , Xu Chunguang , ZHANG Fan . Fluid-structure Interaction Simulation of the Flutter Phenomenon in Electromagnetic Valve[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014 , 35(7) : 1922 -1930 . DOI: 10.7527/S1000-6893.2014.0070
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