吸い込み渦の構造と角運動量輸送に関する数値実験(大気・海洋・惑星の流れ(2),一般講演)

概要

論文の詳細を見る
In order to understand the results of our previous laboratory experiment on a sink vortex, a numerical experiment using an axisymmetric model has been performed. The numerical experiment confirms the results of the laboratory experiment that the radial profile of the tangential velocity does not necessarily coincide with that for a Rankine vortex: When the radial volume flux is large, the angular momentum outside the vortex core is constant in the radial direction; When the radial volume flux is small, however, the angular momentum monotonically decreases with decreasing radius within a certain critical radius. It is found that, for a large volume flux, an interior flow above the boundary layer transport the angular momentum all the way to the vortex core, but, for a small volume flux, the interior flow ceases to transport the angular momentum at a certain radius and all the mass flux occurs inside the boundary layer.
日本流体力学会の論文
2007-08-06