UNSTEADY FREE-SURFACE FLOW DUE TO A LINE SOURCE

被引：31
|
作者：
TYVAND, PA
机构：
[1] Department of Agricultural Engineering, Agricultural University of Norway, Box 65
来源：
PHYSICS OF FLUIDS A-FLUID DYNAMICS | 1992年 / 4卷 / 04期
关键词：
D O I：
10.1063/1.858285
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The initial development of the free-surface flow due to a submerged two-dimensional source (or sink) is studied analytically. The source is turned on at time zero. The fluid depth is infinite. The nonlinear initial/boundary-value problem is solved to second order in a Taylor expansion in time. A critical sink strength is found, for the formation of a surface dip. Its Froude number is equal to 1/3. The leading gravity wave is considered in the context of classical Cauchy-Poisson problems.
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页码：671 / 676
页数：6
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