AM06-14-014 ソルトフィンガーを例とした二重拡散対流の数値シミュレーション(対流(3),一般講演)

概要

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Salt fingers are formed where hot, salty water overlying colder, less salty water. In the ocean, solar radiation may warm the surface layer of the sea but this may also give a high evaporation rate increasing the salt concentration. Therefore, Salt fingers are often observed undersea. In the recent study, it has shown that salt fingers in an ocean area help to keep uniform temperature and salinity layers undersea. This phenomenon is concerned with vertical variation of the density. In the present paper, to investigate density changed by salt fingering, numerical simulation was carried out for double diffusive convection. The governing incompressible Navier-Stokes equations were solved by the multidirectional finite-difference method. For high-Reynolds-number flows, a third-order upwind scheme was utilized for the convective terms to stabilize the computation. Results of the computation were visualized suitably and they captured density variation due to salt fingers.
日本流体力学会の論文
2006-09-05