0196351 - UH-J 20033081 RIV NL eng J - Článek v odborném periodiku
Filip, Petr - David, Jiří
Axial Couette-Poiseuille flow of power-law viscoplastic fluids in concentric annuli.
Journal of Petroleum Science and Engineering. Roč. 40, 3/4 (2003), s. 111-119. ISSN 0920-4105. E-ISSN 1873-4715
Grant CEP: GA AV ČR IAA2060004
Výzkumný záměr: CEZ:AV0Z2060917
Klíčová slova: boreholes * channel geometry * viscoplastic materials
Kód oboru RIV: BK - Mechanika tekutin
Impakt faktor: 0.570, rok: 2003

The laminar axial flow of non-Newtonian fluids obeying RobertsonůStiff model in concentric annuli is analysed. Fluid flow is produced by the inner cylinder moving along its axis and by the pressure gradient imposed in the axial direction. Both cases (where pressure gradient either assists the moving cylinder or opposes the moving cylinder) are considered. All possible cases with respect to the positions of the plug flow regions are uniquely diversified by the derived semi-analytical criteria using the entry (geometric, kinematic, and rheologic) parameters. The explicit semi-analytical expression is derived for each possible case of the volumetric flow rate.
Trvalý link: http://hdl.handle.net/11104/0091988