0196293 - UH-J 20033021 RIV CZ eng C - Conference Paper (international conference)
David, Jiří - Filip, Petr
Non-Newtonian liquids : determination of a value of viscosity characterising the initial newtonian plateau.
Engineering mechanics 2003 : national conference with international participation. Praha: Institute of Theoretical and Applied Mechanics AS CR, 2003, s. -.
[Engineering mechanics 2003 : national conference with international participation. Svratka (CZ), 12.05.2003-15.05.2003]
R&D Projects: GA AV ČR IAA2060004
Institutional research plan: CEZ:AV0Z2060917
Keywords : Non-Newtoninan liquids * viscosity characterising * initial Newtonian plateau
Subject RIV: BK - Fluid Dynamics

The present contribution indicates that precisely the same situation - as with the determination of the so-called yield stress of viscoplastic materials - concerns also the value of viscosity describing the initial Newtonian plateau. It is shown that the determination of this value from the experimental data is not unique, significantly subjects to the range of measured parameters, and the proper determination of the precise value is very questionable.
Permanent Link: http://hdl.handle.net/11104/0091930