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Atomization and Flames in LOX/H<sub>2</sub>- and LOX/CH<sub>4</sub> Spray Combustion

Yang, Baoe and Cuoco, Francesco and Oschwald, Michael (2007) Atomization and Flames in LOX/H<sub>2</sub>- and LOX/CH<sub>4</sub> Spray Combustion. Journal of Propulsion and Power, 23 (4), pp. 763-771. DOI: 10.2514/1.26538

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Abstract

Hydrogen is a widely used rocket fuel and methane is particularly of interest in Europe as a promising substitute for H2. Experimental investigation of cryogenic reactive coaxial sprays with oxygen as an oxidizer and hydrogen and methane as fuels is conducted to prove whether concepts from LOX/H2 injector design can be transferred to LOX/CH4 injection. The liquid oxygen has been atomized in shear co-axial atomizers, the sprays and the flames have been investigated by visualization methods like shadowgraphy and imaging of the flame emission. LOX-sprays are characterized for both propellants by the intact core lengths and droplet numbers and the combustion is analyzed in terms of the flame anchoring mechanism and the flame spreading angle. The results for LOX/H2- and LOX/CH4-spray combustion are compared, also the influence of the injection conditions of the propellants on atomization and spray flame is discussed. Significant differences of the sprays and flames have been observed for the two propellant combinations at similar injection conditions as defined by Weber number and momentum flux ratio. The flame stabilization process has shown a strong influence on the atomization and flame characteristics.

Item URL in elib:https://elib.dlr.de/53113/
Document Type:Article
Title:Atomization and Flames in LOX/H<sub>2</sub>- and LOX/CH<sub>4</sub> Spray Combustion
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Yang, BaoeNorthwestern Polytechnic University, Xi'an, ChinaUNSPECIFIED
Cuoco, FrancescoAvio S.p.A. , 00034 Colleferro, ItalyUNSPECIFIED
Oschwald, MichaelUNSPECIFIEDUNSPECIFIED
Date:2007
Journal or Publication Title:Journal of Propulsion and Power
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:23
DOI :10.2514/1.26538
Page Range:pp. 763-771
Status:Published
Keywords:propellant injection, rocket propulsion
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):W - Antriebsystemtechnik - Schubkammertechnologie und Hochdruckverbrennung (old)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Technologie
Deposited By: Oschwald, Dr.rer.nat. Michael
Deposited On:29 Jan 2008
Last Modified:31 Jul 2019 19:21

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