On the application of the BGK model to the simulation of fluid structure interaction in MEMS

C. Cereignani, A. Frangi, S. Lorenzani, A. Frezzotti
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Abstract

A three-dimensional quasi-static Stokes model, with a correction based on the kinetic theory of rarefied gas, is used to evaluate the damping forces exerted by gas flows on the moving surfaces of micromechanical structures in a wide range of pressures. Numerical results arc compared with the experimental data collected on a silicon biaxial accelerometer in the continuum and transitional flow regimes
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BGK模型在MEMS流固耦合仿真中的应用
采用基于稀薄气体动力学理论修正的三维准静态Stokes模型,对大压力范围内气体流动对微机械结构运动表面的阻尼力进行了计算。在连续流和过渡流两种流型下,将数值计算结果与硅双轴加速度计的实验数据进行了比较
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