【摘要】 <正> 异重流是一种流体在另一种流体中由于其间的重度差所引起的流动。流体比重差异可由种种原因造成,因而异重流也广泛地存在于许多不同的场合中。海陆风、沙暴、冷却水中及河口处由于水体温盐特性不同或含泥沙不同均可造成异重流。Simpson(1982)对于异重流的各种表现及研究现状给予了很好的总结。关于地形对于异重流的影响,迄今更多还原

【Abstract】 Laboratory experiments concerning the effects of a corner-shaped boundary on the motion of a horizontal gravity current are described. In the deceleration region, an approximate 1/3 power law seems to hold between the nondimensional head velocity and the nondimensional distance to the corner apex.更多还原