Separation and pattern formation in hydraulic jumps

被引：13

作者：

Bohr, T ^{[1
]}

Ellegaard, C ^{[1
]}

Hansen, AE ^{[1
]}

Hansen, K ^{[1
]}

Haaning, A ^{[1
]}

Putkaradze, V ^{[1
]}

Watanabe, S ^{[1
]}

机构：

[1] Niels Bohr Inst, Ctr Chaos & Turbulence Studies, DK-2100 Copenhagen, Denmark

来源：

PHYSICA A | 1998年 / 249卷 / 1-4期

关键词：

D O I：

10.1016/S0378-4371(97)00438-X

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present theory and experiments on the circular hydraulic jump in the stationary regime. The theory can handle the situation in which the fluid flows over an edge far away from the jump. In the experiments the external height is controlled, and a series of transitions in the flow structure appears. First the steepening of the jump causes a transition akin to the breaking of a wave, and subsequently a series of shapes appear, which break the azimuthal symmetry. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：111 / 117

页数：7

共 12 条

[1] Hydraulic jumps, flow separation and wave breaking: An experimental study [J].

Bohr, T ;

Ellegaard, C ;

Hansen, AE ;

Haaning, A .

PHYSICA B, 1996, 228 (1-2) :1-10

[2] SHALLOW-WATER APPROACH TO THE CIRCULAR HYDRAULIC JUMP [J].

BOHR, T ;

DIMON, P ;

PUTKARADZE, V .

JOURNAL OF FLUID MECHANICS, 1993, 254 :635-648

[3] Averaging theory for the structure of hydraulic jumps and separation in laminar free-surface flows [J].

Bohr, T ;

Putkaradze, V ;

Watanabe, S .

PHYSICAL REVIEW LETTERS, 1997, 79 (06) :1038-1041

[4] Experimental results on flow separation and transitions in the circular hydraulic jump [J].

Ellegaard, C ;

Hansen, AE ;

Haaning, A ;

Bohr, T .

PHYSICA SCRIPTA, 1996, T67 :105-110

[5]

ELLEGAARD C, 1997, CORNERS POLYGONS KIT

[6] ON LAMINAR BOUNDARY-LAYER FLOW NEAR A POSITION OF SEPARATION [J].

GOLDSTEIN, S .

QUARTERLY JOURNAL OF MECHANICS AND APPLIED MATHEMATICS, 1948, 1 (01) :43-69

[7]

LANDAU LD, 1987, FLUID MECH, P1959

[8]

Prandtl L., 1904, P 3 INT MATH C HEID

[9]

Rayleigh Lord, 1914, P ROY SOC LOND A MAT, V90, P324

[10]

Schlichting H., 1968, Boundary-Layer Theory

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