マイクロポーラス構造内の気液二相流解析(流体工学,流体機械)

概要

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The lattice Boltzmann method for two-phase fluid flows is applied to the simulations of gas-liquid two-phase flows in a micro porous structure for various capillary numbers at low Reynolds numbers. The behaviors of the gas-liquid interface and the velocities of the two-phase fluid in the structure are simulated and the permeabilities of the gas and the liquid through the structure are estimated from the calculated results. By changing the void fraction, the contact angle of the interface on the wall and the surface tension, the effect of these properties on the behaviors and the permeabilities of the two-phase flows in the micro porous structure is investigated. It is found that the permeability of liquid flow depends on the contact of the interface on the wall and it increases for a hydrophobic wall. It is also seen that a liquid flow with a high void fraction is choked in a pore for low capillary numbers.
一般社団法人日本機械学会の論文
2007-11-25