2020
Generalized symmetries, conservation laws and Hamiltonian structures of an isothermal no-slip drift flux model
OPANASENKO, Stanislav; Alexander BIHLO; Roman POPOVYCH and Artur SERGYEYEVBasic information
Original name
Generalized symmetries, conservation laws and Hamiltonian structures of an isothermal no-slip drift flux model
Authors
OPANASENKO, Stanislav (804 Ukraine, guarantor); Alexander BIHLO (40 Austria); Roman POPOVYCH (804 Ukraine, belonging to the institution) and Artur SERGYEYEV (804 Ukraine, belonging to the institution)
Edition
Physica D: Nonlinear Phenomena, Amsterdam, Elsevier B.V. 2020, 0167-2789
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
10101 Pure mathematics
Country of publisher
Netherlands
Confidentiality degree
is not subject to a state or trade secret
References:
Impact factor
Impact factor: 2.300
RIV identification code
RIV/47813059:19610/20:A0000068
Organization unit
Mathematical Institute in Opava
UT WoS
000558454900017
EID Scopus
2-s2.0-85086077115
Keywords in English
Generalized symmetry; Local conservation law; Recursion operator; Hamiltonian structure; Hydrodynamic-type system; Isothermal no-slip drift flux
Tags
Links
GBP201/12/G028, research and development project.
Changed: 6/4/2021 13:40, Mgr. Aleš Ryšavý
Abstract
In the original language
We study the hydrodynamic-type system of differential equations modeling isothermal no-slip drift flux. Using the facts that the system is partially coupled and its subsystem reduces to the (1+1)-dimensional Klein-Gordon equation, we exhaustively describe generalized symmetries, cosymmetries and local conservation laws of this system. A generating set of local conservation laws under the action of generalized symmetries is proved to consist of two zeroth-order conservation laws. The subspace of translation-invariant conservation laws is singled out from the entire space of local conservation laws. We also find broad families of local recursion operators and a nonlocal recursion operator, and construct an infinite family of Hamiltonian structures involving an arbitrary function of a single argument. For each of the constructed Hamiltonian operators, we obtain the associated algebra of Hamiltonian symmetries.