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.

引用

页码：671 / 676

页数：6

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