. . "The direct correlation between classical mechanics of material points (Lagrange principle of classical mechanics) and classical continuum mechanics can be established when the existence of a trajectory and a friction force are added. This new approach to the fluid flow stability leads to the revision of the Rayleigh\u2019s or Fj\u00F6rtoft\u2019s criteria and allows us to explain the discrepancy between the theory and experiments. As the example the Couette and Poisseuille flows are investigated and the discrepancies are explained." . "2"^^ . . . "1"^^ . "[D91906AF9272]" . "2"^^ . . . . . . "2012-08-19+02:00"^^ . "23rd International Congress of Theoretical and Applied Mechanics" . "RIV/61388998:_____/12:00386690" . "978-988-16022-3-7" . "Variational formulation of continuum mechanics based on the lagrangian with the friction force"@en . . "Beijing" . "Variational formulation of continuum mechanics based on the lagrangian with the friction force"@en . . "Beijing" . "China Science Literature Publishing House" . . "Variational formulation of continuum mechanics based on the lagrangian with the friction force" . . "Novotn\u00FD, P." . "I, P(GA106/09/1573), P(GAP101/10/1428), P(GAP201/10/0357)" . . . "RIV/61388998:_____/12:00386690!RIV13-AV0-61388998" . "variational principle; continuum mechanics; flow stability"@en . . . "Mar\u0161\u00EDk, Franti\u0161ek" . . "177041" . . . "Variational formulation of continuum mechanics based on the lagrangian with the friction force" . "The direct correlation between classical mechanics of material points (Lagrange principle of classical mechanics) and classical continuum mechanics can be established when the existence of a trajectory and a friction force are added. This new approach to the fluid flow stability leads to the revision of the Rayleigh\u2019s or Fj\u00F6rtoft\u2019s criteria and allows us to explain the discrepancy between the theory and experiments. As the example the Couette and Poisseuille flows are investigated and the discrepancies are explained."@en .