G223 気泡流中の線形分散波動(G-22 波動・音・衝撃波(2),一般講演)

概要

論文の詳細を見る
One-dimensional linear dispersive wave motions in water flows containing a number of small spherical gas bubbles are examined on the basis of a set of averaged equations recently derived by the present authors. The averaged equations consist of the conservation laws and the equation of bubble wall, and describe the behavior of physical quantities separately averaged in liquid and gas phases. The compressibility of water is taken into account as well as that of gas in bubbles. The result of linear analysis shows that there exist three types of propagation modes in general in bubbly flows, which are the fast pressure wave mode, the slow pressure wave mode, and a convection mode, which can be unstable if the flow velocity of the liquid phase is larger than that of the gas phase.
日本流体力学会の論文
2004-08-09