Flow stability in tube - thermodynamic analysis

0353346 - ÚT 2011 RIV PL eng C - Conference Paper (international conference)
Novotný, P. - Maršík, František
Flow stability in tube - thermodynamic analysis.
7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics. Krakow: AGH University of Science and Technology Press, 2009 - (Szmyd, J.; Spatek, J.; Kowalewski, T.), s. 168-168. ISBN 978-83-7464-235-4.
[ExHFT-7, World Conference onExperimental Heat Transfer,Fluid Mechanics and Thermodynamics /7./. Krakow (PL), 28.06.2009-03.07.2009]
R&D Projects: GA MŠMT(CZ) 1M06031
Institutional research plan: CEZ:AV0Z20760514
Keywords : flow stability * vortex * hydrodynamics stability
Subject RIV: BK - Fluid Dynamics

Flow stability in tube is analysed by using the new thermodynamic condition of stability. This condition is derived from the thermodynamics, especially from the extremal condition for the total energy. In this paper is indicated the theoretical solution of the flow between two rotating cylinders. The Poiseuille and the Couette flow into the annulus are taken as the examples. This analysis supports the experimental findings, i.e., the strong influence of vortex core rotation on the enhancement of flow stability.
Permanent Link: http://hdl.handle.net/11104/0192618