Proceedings Vol. 14 (2008)
ENGINEERING MECHANICS 2008
May 12 – 15, 2008, Svratka, Czech Republic
Copyright © 2008 Institute of Thermomechanics, Academy of Sciences of the Czech Republic, v.v.i., Prague
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)
list of papers scientific commitee
pages 64 - +8p., full text
A number of papers have aimed at an analytical solution of an axial annular flow of power-law fluids, especially a relation: volumetric flow rate vs. pressure gradient. No complete analytical solution has been yet achieved. The only analytical solutions - that have been hitherto derived - concern the limiting cases of a geometrical parameter κ (inner-to-outer diameters ratio) or a flow behaviour index n. The present contribution discusses an applicability of these limiting solutions for a broader region of entry parameters and proves that in many cases usage of these relations is fully acceptable (and comparable with an inaccuracy in experimental determination of flow behaviour index n and consistency parameter k of a power-law model).
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