Research output: Contribution to journal › Article › peer-review
Symmetries in equations of incompressible viscoelastic Maxwell medium*. / Pukhnachev, Vladislav V.; Fominykh, Elena Yu.
In: Lithuanian Mathematical Journal, Vol. 58, No. 3, 01.07.2018, p. 309-319.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Symmetries in equations of incompressible viscoelastic Maxwell medium*
AU - Pukhnachev, Vladislav V.
AU - Fominykh, Elena Yu
N1 - Publisher Copyright: © 2018, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2018/7/1
Y1 - 2018/7/1
N2 - We consider unsteady flows of incompressible viscoelastic Maxwell medium with upper, low, and Jaumann convective derivatives in the rheological constitutive law. We give characteristics of a system of equations that describe a three-dimensional motion of such a medium for all three types of convective derivative. In the general case, due to the incompressibility condition, the equations of motion have both real and complex characteristics. We study group properties of this system in the two-dimensional case. On this basis, we choose submodels of the Maxwell model that can be reduced to hyperbolic ones. The properties of the hyperbolic submodels obtained depend on the choice of the invariant derivative in the rheological relation. We also present concrete examples of invariant solutions.
AB - We consider unsteady flows of incompressible viscoelastic Maxwell medium with upper, low, and Jaumann convective derivatives in the rheological constitutive law. We give characteristics of a system of equations that describe a three-dimensional motion of such a medium for all three types of convective derivative. In the general case, due to the incompressibility condition, the equations of motion have both real and complex characteristics. We study group properties of this system in the two-dimensional case. On this basis, we choose submodels of the Maxwell model that can be reduced to hyperbolic ones. The properties of the hyperbolic submodels obtained depend on the choice of the invariant derivative in the rheological relation. We also present concrete examples of invariant solutions.
KW - invariant solutions
KW - Johnson–Segalman objective derivative
KW - Lie group
KW - Maxwell medium
KW - viscoelastic fluid
UR - http://www.scopus.com/inward/record.url?scp=85053458916&partnerID=8YFLogxK
U2 - 10.1007/s10986-018-9401-8
DO - 10.1007/s10986-018-9401-8
M3 - Article
AN - SCOPUS:85053458916
VL - 58
SP - 309
EP - 319
JO - Lithuanian Mathematical Journal
JF - Lithuanian Mathematical Journal
SN - 0363-1672
IS - 3
ER -
ID: 16601442