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Generalized Reynolds Number for Non-Newtonian Fluids

Madlener, K. and Frey, B. and Ciezki, H.C. (2009) Generalized Reynolds Number for Non-Newtonian Fluids. In: Progress in Propulsion Physics, Vol. 1. Torus Press. pp. 237-250. ISBN 978-2-7598-0411-5.

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Abstract

An extended version of the generalized Reynolds number was derived to characterize the duct flow of non-Newtonian gelled fluids of the Herschel-Bulkley-Extended (HBE) Type. This number allows also estimating the transition from laminar to turbulent flow conditions. An experimental investigation was conducted with a capillary rheometer for several non-Newtonian gelled fluids to evaluate the introduced HBE-generalized Reynolds number Regen HBE. A good correlation between the experimental results and the theory could be found for laminar flow conditions. For one of the examined gelled fuels, the necessary high Reynolds numbers could be realized so that the transition from the laminar to the turbulent flow regime could be measured. Because of its general description, the HBE-generalized Reynolds number can also be applied to Newtonian liquids as well as to non-Newtonian fluids of the Herschel-Bulkley (HB), Ostwald-de-Waele (power-law, PL), and Bingham type.

Document Type:Book Section
Title:Generalized Reynolds Number for Non-Newtonian Fluids
Authors:
AuthorsInstitution or Email of Authors
Madlener, K.UNSPECIFIED
Frey, B.UNSPECIFIED
Ciezki, H.C.Helmut.Ciezki@dlr.de
Date:2009
Refereed publication:Yes
In ISI Web of Science:No
Volume:Vol. 1
Page Range:pp. 237-250
Editors:
EditorsEmail
De Luca, L.UNSPECIFIED
Bonnal, C.UNSPECIFIED
Haidn, O.Oskar.Haidn@dlr.de
Frolov, S.UNSPECIFIED
Publisher:Torus Press
Series Name:Progress in Propulsion Physics
ISBN:978-2-7598-0411-5
Status:Published
Keywords:Reynolds number, gelled fuels
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W - no assignement
DLR - Research area:Space
DLR - Program:W - no assignement
DLR - Research theme (Project):W -- no assignement (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Technologie
Deposited By: Michaela Hanke
Deposited On:07 Jul 2009 09:30
Last Modified:02 Nov 2009 16:24

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