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Investigation of the Spray Characteristics of an Aluminized Gel Fuel with an Impinging Jet Injector

Bartels, Nora and von Kampen, Jens and Ciezki, Helmut and Zanetti, Nicola (2004) Investigation of the Spray Characteristics of an Aluminized Gel Fuel with an Impinging Jet Injector. In: Energetic Materials - Structure and Properties, 17-1-17-15. 35th International Annual Conferece of ICT, 2003-06-29 - 2003-07-02, Karlsruhe (Germany). ISSN 0722-4087

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Abstract

The spray characteristics of an aluminum particle containing gelled Jet A-1-based fuel has been investigated under ambient pressure and temperature conditions with a doublet like-on-like impinging jet injector setup. A detailed parametric study concerning jet exit velocity and impingement angle has been conducted using shadowgraphy for the visualization of the topology of the atomization process and Fraunhofer diffraction for droplet size analysis. The atomization behavior has also been compared with the un-metallized gelled Jet A-1 fuel. The general features of the atomization behavior of the metallized and the non-metallized gelled fuels in an impinging jet injector setup are in principle similar to those of Newtonian fluids in broad parameter ranges at mean and larger Reynolds numbers, whereas ligaments and droplets are separated in bow-shaped structures from the sheet. For small jet-exit velocities, however, a ray-like pattern has been observed on the fluid sheet of the aluminized gelled fuel with its origin near the impingement point of both jets. Net-like structures occur at the rim of the liquid sheet, so that in this parameter region the breakup-process seems to be influenced by this rays-shaped pattern.

Item URL in elib:https://elib.dlr.de/50499/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Investigation of the Spray Characteristics of an Aluminized Gel Fuel with an Impinging Jet Injector
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Bartels, NoraUNSPECIFIEDUNSPECIFIED
von Kampen, JensUNSPECIFIEDUNSPECIFIED
Ciezki, HelmutUNSPECIFIEDUNSPECIFIED
Zanetti, NicolaUNSPECIFIEDUNSPECIFIED
Date:June 2004
Journal or Publication Title:Energetic Materials - Structure and Properties
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:17-1-17-15
Editors:
EditorsEmail
FhG-ICT, UNSPECIFIED
ISSN:0722-4087
Status:Published
Keywords:gelled fuels, gelled propellants, non-Newtonian fluid, spray properties
Event Title:35th International Annual Conferece of ICT
Event Location:Karlsruhe (Germany)
Event Type:international Conference
Event Dates:2003-06-29 - 2003-07-02
Organizer:Fraunhofer-Institut für Chemische Technologie
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Military Technologies (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Technologie
Deposited By: Ciezki, Dr.-Ing. Helmut
Deposited On:07 Aug 2007
Last Modified:27 Apr 2009 14:10

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