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Estimation of Flow Properties of Gelled Fuels with Regard to Propulsion Systems

Madlener, Klaus and Ciezki, Helmut (2012) Estimation of Flow Properties of Gelled Fuels with Regard to Propulsion Systems. Journal of Propulsion and Power, Vol. 28 (No. 1), pp. 113-121. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.50422.

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Gelled fuels and propellants are shear-thinning non-Newtonian fluids. Their dependency of the shear viscosity from the shear rate can be described with sufficient accuracy by an extended version of the Herschel-Bulkley equation in the whole rocket and ramjet propulsion-relevant shear-rate range. Additionally to the analytically determined generalized Reynolds number for fluids, which follow the extended Herschel-Bulkley equation, a method for the estimation of critical Reynolds numbers (as a phenomenological approach) is presented. Both dimensionless numbers are useful for the characterization of the flow and partially also of the spray processes of gel fluids. The results show furthermore that both the shear-thinning property and the yield stress tend to stabilize the laminar flow and thus shift the critical Reynolds number to higher values when compared to Newtonian liquids.

Item URL in elib:https://elib.dlr.de/75173/
Document Type:Article
Title:Estimation of Flow Properties of Gelled Fuels with Regard to Propulsion Systems
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Ciezki, Helmuthelmut.ciezki (at) dlr.deUNSPECIFIED
Date:January 2012
Journal or Publication Title:Journal of Propulsion and Power
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Volume:Vol. 28
Page Range:pp. 113-121
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Keywords:Gelled Fuels, Propulsion Systems
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Antriebsystemtechnik - Schubkammertechnologie (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Propellants
Deposited By: Schmidt, Melanie
Deposited On:14 Mar 2012 08:52
Last Modified:08 Mar 2018 18:44

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