elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Injection Characteristics on the Surface of a Coaxial Jet

Branam, R. and Schneider, G. and Volpp, A. and Mayer, W. (2002) Injection Characteristics on the Surface of a Coaxial Jet. In: AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, pp. 1-10. 38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Indianapolis, IN, 8.-11. July 2002.

Full text not available from this repository.

Abstract

In high pressure injection systems such as diesel motors, turbojets and rocket engines the injection process is critical in defining performance. The injection jet breakup and mixing controls the burning efficiency and overall energy conversion. This investigation takes a look at the jet behavior for a single injector element to determine the influence of the injection conditions on a round liquid jet. To adjust the relative velocity between the liquid jet and the gaseous ambient a wind tunnel like coaxial flow configuration has been used. This made it possible to distinguish between effects of aerodynamic forces, chamber pressure, jet velocity and turbulence. Shadowgraphy and a novel image processing approach was used to determine the jet surface characteristics; wavelength and amplitude. The absolute injection velocity of the jet seems to affect the structures the most with an increasing velocity causing the wavelengths to be smaller. An increase in chamber pressure seems to have little influence on the jet with no relative velocity between the gas and liquid jet, but increased the amplitude and drop formation frequency at other testing conditions. The amplitude trends provide information about the likelihood of drop formation.

Document Type:Conference or Workshop Item (Paper)
Additional Information: LIDO-Berichtsjahr=2002, monograph_id=AIAA 2002-3695,
Title:Injection Characteristics on the Surface of a Coaxial Jet
Authors:
AuthorsInstitution or Email of Authors
Branam, R.Guest Scientist
Schneider, G.UNSPECIFIED
Volpp, A.FH Heilbronn
Mayer, W.UNSPECIFIED
Date:2002
Journal or Publication Title:AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit
Page Range:pp. 1-10
Editors:
EditorsEmail
AIAA, UNSPECIFIED
Status:Published
Event Title:38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, Indianapolis, IN, 8.-11. July 2002
Organizer:American Institute of Aeronautics and Astronautics
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):E -- no assignement
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion
Deposited By: Monika Lohmiller
Deposited On:16 Sep 2005
Last Modified:06 Jan 2010 13:58

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.