Turkish Journal of Mathematics
DOI
10.3906/mat-1410-38
Abstract
Eulerian dynamical equations in a three-dimensional domain are used to construct a formal symplectic structure on time-extended space. Symmetries, invariants, and conservation laws are related to this geometric structure. The symplectic structure incorporates dynamics of helicities as identities. The generator of the infinitesimal dilation for symplectic two-form can be interpreted as a current vector for helicity. Symplectic dilation implies the existence of contact hypersurfaces. In particular, these include contact structures on the space of streamlines and on the Bernoulli surfaces.
Keywords
Incompressible fluid, symplectic and contact structures, symplectic dilation, helicity conservation, Lagrangian description
First Page
925
Last Page
940
Recommended Citation
GÜMRAL, HASAN
(2016)
"Lagrangian description, symplectization, and Eulerian dynamics of incompressible fluids,"
Turkish Journal of Mathematics: Vol. 40:
No.
5, Article 1.
https://doi.org/10.3906/mat-1410-38
Available at:
https://journals.tubitak.gov.tr/math/vol40/iss5/1
