Simulation of surface gravity waves in the Dyachenko variables on the free boundary of flow with constant vorticity

被引:8
作者
Dosaev, A. S. [1 ]
Troitskaya, Yu. I. [1 ,2 ]
Shishina, M. I. [3 ]
机构
[1] Russian Acad Sci, Inst Appl Phys, Ul Ulyanova 46, Nizhnii Novgorod 603950, Russia
[2] Lobachevsky State Univ Nizhny Novgorod, Pr Gagarina 23, Nizhnii Novgorod 603950, Russia
[3] Nizhny Novgorod Planetarium, Ul Revolyutsionnaya 20, Nizhnii Novgorod 603002, Russia
基金
俄罗斯基础研究基金会; 俄罗斯科学基金会;
关键词
surface gravity waves; vorticity; Dyachenko variables; conformal variables; evolution of waves; modulation instability; WATER-WAVES; SOLITARY WAVES; SHEAR FLOWS; SHALLOW-WATER; FLUID;
D O I
10.1134/S0015462817010069
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
Waves in deep water with constant vorticity in the region bounded by the free surface and the infinitely deep plane bottom are considered. Using the conformal variables and the conformal transform technique, a system of exact integro-differential equations solved relative to the derivatives with respect to time is derived and the equivalent system of equations is obtained in the Dyachenko variables. The efficiency of using the obtained system in the Dyachenko variables for investigating surface wave dynamics on the current of infinite depth with constant vorticity is demonstrated with reference to numerical experiments.
引用
收藏
页码:58 / 70
页数:13
相关论文
共 25 条
[1]   A coupled-mode model for the scattering of water waves by shearing currents in variable bathymetry [J].
Belibassakis, K. A. .
JOURNAL OF FLUID MECHANICS, 2007, 578 :413-434
[2]   THE SOLITARY WAVE ON A STREAM WITH AN ARBITRARY DISTRIBUTION OF VORTICITY [J].
BENJAMIN, TB .
JOURNAL OF FLUID MECHANICS, 1962, 12 (01) :97-116
[3]  
Chalikov D, 1998, ADV FLUID MECH SER, V17, P207
[4]  
CHALIKOV D, 1996, NUMERICAL MODELING S
[5]  
Choi W., 2003, PHYS REV E, V68, P1
[6]   STEEP, STEADY SURFACE-WAVES ON WATER OF FINITE DEPTH WITH CONSTANT VORTICITY [J].
DASILVA, AFT ;
PEREGRINE, DH .
JOURNAL OF FLUID MECHANICS, 1988, 195 :281-302
[7]  
Dyachenko A.L., 1996, Plasma Phys. Rep, V22, P916
[8]  
Dyachenko A.L., 2005, J EXP THEOR PHYS+, V81, P318
[9]   Analytical description of the free surface dynamics of an ideal fluid (canonical formalism and conformal mapping) [J].
Dyachenko, AI ;
Kuznetsov, EA ;
Spector, MD ;
Zakharov, VE .
PHYSICS LETTERS A, 1996, 221 (1-2) :73-79
[10]   SHALLOW WATER WAVES ON SHEAR FLOWS [J].
FREEMAN, NC ;
JOHNSON, RS .
JOURNAL OF FLUID MECHANICS, 1970, 42 :401-&