TY - GEN
TI - Souvislost mezi principem nejmenší akce a termodynamickou podmínkou stability
TT - The connection between the principle of the least action and the thermodynamic condition of stability
T3 - Engineering Mechanics 2023 /29./
AU - Maršík, František
AB - The extended principle is formulated for a material point (M.P.) X, which has nonzero mass, temperature, and trajectory x(X,t). The Lagrangian of this variation principle is equal to the kinetic energy from which, the internal energy of the material point (which depends on the entropy) and the additional energy caused by the frictional force are subtracted. The relation between the inertial force and the entropy gradient is found and the gravitational force is completely replaced by the entropy gradient. Thanks to the mentioned properties of the total enthalpy, the Thermodynamic criterion of stability of the state of M.P., is formulated.
SN - 1805-8248
SN - 978-80-87012-84-0
UR - https://hdl.handle.net/11104/0344245
UR - http://www.nusl.cz/ntk/nusl-532607
A2 - Antošová, Zuzana
A2 - Trávníček, Zdeněk
LA - eng
KW - principle of the least action
KW - thermodynamic stability condition
KW - annular swirl flow
PY - 2023
PB - Ústav termomechaniky, Dolejškova 5, 182 00 Praha 8, http://www.it.cas.cz/
ER -