论文标题
使用晶格Boltzmann方法对科里奥利质量流量计的流体结构相互作用模拟
Fluid-Structure Interaction Simulation of a Coriolis Mass Flowmeter using a Lattice Boltzmann Method
论文作者
论文摘要
在本文中，我们使用流体结构相互作用（FSI）方法来模拟科里奥利质量流计（CMF）。流体动力学由开源框架OpenLB计算，基于晶格Boltzmann方法（LBM）。对于结构动力学，我们采用开源软件Elmer，这是有限元方法（FEM）的实现。提出了两个软件包之间的交错耦合方法。有限元网格由网格发电机GMSH创建，以确保完整的开源工作流程。通过模态分析计算的CMF的本征模与测量数据进行了比较。使用估计的激发频率，应用了完全耦合的分区，FSI模拟来模拟所研究的CMF设计的相移。计算出的临时值非常吻合测量数据，并验证模型以数值描述CMF的工作原理的适用性。
In this paper we use a fluid-structure interaction (FSI) approach to simulate a Coriolis mass flowmeter (CMF). The fluid dynamics are calculated by the open source framework OpenLB, based on the lattice Boltzmann method (LBM). For the structural dynamics we employ the open source software Elmer, an implementation of the finite element method (FEM). A staggered coupling approach between the two software packages is presented. The finite element mesh is created by the mesh generator Gmsh to ensure a complete open source workflow. The Eigenmodes of the CMF, which are calculated by modal analysis are compared with measurement data. Using the estimated excitation frequency, a fully coupled, partitioned, FSI simulation is applied to simulate the phase shift of the investigated CMF design. The calculated phaseshift values are in good agreement to the measurement data and verify the suitability of the model to numerically describe the working principle of a CMF.
