Conservation laws for one-layer shallow water wave systems

YAŞAR E., Özer T.

NONLINEAR ANALYSIS-REAL WORLD APPLICATIONS, cilt.11, sa.2, ss.838-848, 2010 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 11 Sayı: 2
  • Basım Tarihi: 2010
  • Doi Numarası: 10.1016/j.nonrwa.2009.01.028
  • Dergi Adı: NONLINEAR ANALYSIS-REAL WORLD APPLICATIONS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.838-848
  • Anahtar Kelimeler: Conservation laws, Symmetry groups, Shallow water wave systems, PARTIAL-DIFFERENTIAL EQUATIONS, INVARIANT SOLUTIONS, SYMMETRIES
  • Bursa Uludağ Üniversitesi Adresli: Evet

Özet

The problem of correspondence between symmetries and conservation laws for one-layer shallow water wave systems in the plane flow, axisymmetric flow and dispersive waves is investigated from the composite variational principle of view in the development of the study [N.H. lbragimov, A new conservation theorem, journal of Mathematical Analysis and Applications, 333(1) (2007) 311-328]. This method is devoted to construction of conservation laws of non-Lagrangian systems. Composite principle means that in addition to original variables of a given system, one should introduce a set of adjoint variables in order to obtain a system of Euler-Lagrange equations for some variational functional. After studying Lie point and Lie-Backlund symmetries, we obtain new local and nonlocal conservation laws. Nonlocal conservation laws comprise nonlocal variables defined by the adjoint equations to shallow water wave systems. In particular, we obtain infinite local conservation laws and potential symmetries for the plane flow case. (C) 2009 Elsevier Ltd. All rights reserved.