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Fluid-Structure Interaction of a Reed Type Valve Subjected to Piston Displacement

机译:活塞位移的簧片型阀的流体结构相互作用

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The present paper deals with the dynamic simulation of the fluid flow through reed valves and is concerned with a partitioned fluid-structure interaction coupling scheme. In this work attends the newly in-house implemented computational fluid dynamics (CFD) and moving mesh coupled code TermoFluids. The CFD solver consists of a three-dimensional explicit finite volume fractional-step algorithm formulated in a second-order, conservative and collocated unstructured grid arrangement. Large eddy simulation is performed to solve the turbulent flow, using the subgrid scale WALE model. A radial basis function interpolation procedure is used to dynamically move the mesh according with the displacement of the valve. A simplified geometry of an axial hole plus a rectangular diffuser with a piston based inlet condition is considered. The valve dynamics is modelled by means of the normal mode summation methodology and a coefficient of restitution is applied to model the impact between the valve and its seat. A parametric study is presented in order to analyze the influence of the valve thickness.
机译:本文涉及流体流过簧片阀的动态模拟,涉及分配的流体结构相互作用耦合方案。在这项工作中,新内部内部实施的计算流体动力学(CFD)和移动网状耦合代码Termof流体。 CFD求解器包括以二阶,保守的非结构化网格布置配制的三维明确的有限体分数步骤算法。使用SubLid Scale Wale型号来执行大涡模拟以解决湍流。径向基函数插值过程用于根据阀的位移动态移动网状物。考虑轴向孔的简化几何形状,以及具有活塞的入口条件的矩形扩散器。阀门动力学通过正常模式求和方法建模,并应用恢复系数来模拟阀门与其座椅之间的冲击。提出了参数研究以分析阀门厚度的影响。

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