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

High pressure visualisation of liquid oxygen and cryogenic hydrogen combustion under an imposed acoustic field

Webster, S. and Hardi, Justin and Oschwald, Michael (2014) High pressure visualisation of liquid oxygen and cryogenic hydrogen combustion under an imposed acoustic field. In: Proeedings of the 19th AFMC. 19th Australasian Fluid Mechanics Conference (19th AFMC), 8. - 11. Dec. 2014, Melbourne, Australia.

Full text not available from this repository.

Abstract

Experimental investigations into combustion instability were undertaken using a rectangular subscale combustion chamber. High speed optical diagnostics were used to observe flame-acoustic interactions. A sector wheel was used to produce an acoustic field with time varying amplitude. The acoustic field under investigation is the first transverse mode with a velocity anti node located in the central combustion zone under observation by high speed optical diagnostics. Increased combustion product emission was observed near to the face plate for periods of high amplitude excitation. Combustion zones with high emission were convected downstream as excitation amplitudes decreased. During phases of increasing amplitude an increase in emission intensity at the mixing border between dense oxygen and cryogenic hydrogen was observed. This provides visual confirmation of increased mixing efficiency due to high amplitude transverse velocities in the vicinity of the injection plane.

Item URL in elib:https://elib.dlr.de/93830/
Document Type:Conference or Workshop Item (Speech)
Title:High pressure visualisation of liquid oxygen and cryogenic hydrogen combustion under an imposed acoustic field
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Webster, S.Samuel.Webster (at) dlr.deUNSPECIFIED
Hardi, JustinJustin.Hardi (at) dlr.dehttps://orcid.org/0000-0003-3258-5261
Oschwald, MichaelMichael.Oschwald (at) dlr.dehttps://orcid.org/0000-0002-9579-9825
Date:2014
Journal or Publication Title:Proeedings of the 19th AFMC
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:combustion instability; high speed optical diagnostics
Event Title:19th Australasian Fluid Mechanics Conference (19th AFMC)
Event Location:Melbourne, Australia
Event Type:international Conference
Event Dates:8. - 11. Dec. 2014
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Antriebsystemtechnik - Schubkammertechnologie
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Deposited By: Hanke, Michaela
Deposited On:17 Dec 2014 15:53
Last Modified:01 Dec 2018 19:50

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.