ディスク状粒子濃厚分散系のコーティング流れのミクロ－マクロ数値流動シミュレーション

概要

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A micro-macro computational approach was applied to a numerical simulation for slot coating flows of concentrated dispersion system of disclike particles. In the present simulation, the computation of macro flows was coupled with the micro simulation of dynamics of dispersed particles. Disc like particles were modeled by oblate spheroids, and the effect of interaction among particles was introduced using a Maier-Saupe type mean field potential. The Brownian configuration field method was used for solving the stochastic differential equation of particle motion. The numerical results indicated that particles were aligned well near the exit of a die and the particle orientation relaxed along the flow. The orientation order was larger for higher Peclet number. Furthermore, the orientation distribution was obtained from the numerical prediction of the orientation vector of each particle.