ENERGY FLUX AND GROUP-VELOCITY

被引：23

作者：

HAYES, M ^{[1
]}

MUSGRAVE, MJP ^{[1
]}

机构：

[1] UNIV LONDON IMPERIAL COLL SCI & TECHNOL,DEPT MATH,LONDON SW7 2AZ,ENGLAND

来源：

WAVE MOTION | 1979年 / 1卷 / 01期

关键词：

D O I：

10.1016/0165-2125(79)90027-1

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Inhomogeneous plane wave solutions to the wave equations for a linear isotropic elastic solid and a linear isotropic dielectric are shown to possess energy flux velocity vectors which are non-coincident with corresponding group velocity vectors. In contrast to free surface waves, these examples imply a driving constraint and have an associated non-zero Lagrangian energy density. © 1979.

引用

页码：75 / 82

页数：8

共 7 条

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PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1977, 354 (1679) :533-535

[2]

LIGHTHILL MJ, 1965, J I MATH APPLICS, V1

[3]

LORD RAYLEIGH, 1945, THEORY SOUND, V1, P475

[4]

REYNOLDS O, 1900, SCI PAPERS, V1, P198

[5]

Synge, 1956, P ROY IRISH ACAD A, V58, P13

[6] A GENERAL APPROACH TO LINEAR AND NON-LINEAR DISPERSIVE WAVES USING A LAGRANGIAN [J].

WHITHAM, GB .

JOURNAL OF FLUID MECHANICS, 1965, 22 :273-&

[7] NON-LINEAR DISPERSIVE WAVES [J].

WHITHAM, GB .

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1965, 283 (1393) :238-&

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