<論説>自由表面をもつ開水路密度流の数値解析 : 浮遊砂混相流などの密度流解析の基礎として

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In recent years, as the problems related to environmental conservation of water area and coastal development have become more serious and more complicated, it has become important to clarify the characteristics of the various kinds of density currents. A density current is the flow of one fluid within another caused by the density difference between the two fluids. In this paper, two kinds of simulation programs were debeloped. One is the modified SMAC method and the other is modified SOLA/SURF method that are extended to calculate the two dimensional, two layer, time-dependent density currents. In these simulation programs, a low diffusion, stable and high-accurate algorithm named cubic-interpolated pseudo-particle (CIP) for solving hyperbolic equations was adopted to calculate the Navier-Stokes equation and the equation of mass conservation. As numerical examples, a density current intrusion to the fresh water tank and a densimetric (or lock) exchange flow were calculated. The results of the comparison between another computation and experiments were satisfactory.
四日市大学の論文
1995-03-01