円筒ジェットのカプセル化に及ぼす非ニュートン粘性の影響(流体一般・非ニュートン力学(1),一般講演)

概要

論文の詳細を見る
Non-Newtonian viscous effects on encapsulation of an annular liquid jet are analytically examined when core and surrounding fluids are ignored. Nonlinear evolution equations of the jet are derived under the long wave approximation when the viscosity is described by the Carreau model, for which non-Newtonian properties appear only in the nonlinear terms. Numerical results of the equations show that the viscosity critically affects the process of the encapsulation, that is, the increase of the viscosity increases the time for the encapsulation, the ballooning radius and length of the thread between the capsules. In particular, such effects are weakened when the liquid is pseudo-plastic and enhanced when dilatant, though there exist some limitations in the time and profiles.
日本流体力学会の論文
2007-08-06