積分壁モデルを用いたMPS法による撹拌槽シミュレーション

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  • Simulation of the Fluid Flow in Stirred Vessels Using MPS Method with the Integral Wall Model

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<p>We have conducted numerical simulations of fluid flow in stirred vessels using the Moving Particle Semi-implicit (MPS) method, which is one of the particle methods for incompressible flow. The MPS method originally calculates wall boundary using particles. However, the wall particle method has difficulties in changing boundary shape and spatial resolution. Therefore, in this study, we applied two types of boundary treatments that use polygon mesh for the wall boundary representation, namely the polygon model developed by Harada et al. (2008) and the integral wall model proposed by Matsunaga et al. (2018). We simulated laminar flow stirred by six-blade Rushton impeller in cylindrical tank. The calculation results are compared with those from experimental measurement in literature. It is found that the integral wall model exhibits higher accuracy and higher computational stability.</p>

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