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Investigation of Flashing LN2-Jets in Terms of Spray Morphology, Droplet Size and Velocity Distributions

Rees, Andreas and Salzmann, Heiko and Sender, Joachim and Oschwald, Michael (2019) Investigation of Flashing LN2-Jets in Terms of Spray Morphology, Droplet Size and Velocity Distributions. In: Proceedings of the 8th European Conference for Aeronautics and Space Sciences. 8th European Conference for Aeronautics and Space Sciences EUCASS, 1. - 4. Jul. 2019, Madrid, Spain. DOI: 10.13009/EUCASS2019-418

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Abstract

For a detailed experimental investigation of superheated cryogenic fluids the new cryogenic test bench M3.3 with a temperature controlled injection system was built at the DLR Institute of Space Propulsion in Lampoldshausen. In a first test campaign flash boiling liquid nitrogen sprays were visualized by means of high-speed shadowgraphy to determine the resulting spray patterns and spray angles. The cryogenic spray patterns are compared with break-up correlations for storable fluids from literature. The dependence of droplet velocities and diameters on the injection conditions was investigated at a constant position in the spray by means of Phase Doppler Anemometry.

Item URL in elib:https://elib.dlr.de/132941/
Document Type:Conference or Workshop Item (Speech)
Title:Investigation of Flashing LN2-Jets in Terms of Spray Morphology, Droplet Size and Velocity Distributions
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Rees, AndreasAndreas.Rees (at) dlr.dehttps://orcid.org/0000-0002-4114-636X
Salzmann, HeikoGerman Aerospace Center, DLR, Inst. of Space Propulsion, Lampoldshausen, DUNSPECIFIED
Sender, JoachimJoachim.Sender (at) dlr.dehttps://orcid.org/0000-0002-7408-1208
Oschwald, MichaelMichael.Oschwald (at) dlr.dehttps://orcid.org/0000-0002-9579-9825
Date:2019
Journal or Publication Title:Proceedings of the 8th European Conference for Aeronautics and Space Sciences
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.13009/EUCASS2019-418
Status:Published
Keywords:flash boiling, cryogenic, superheat, spray angle, Phase Doppler
Event Title:8th European Conference for Aeronautics and Space Sciences EUCASS
Event Location:Madrid, Spain
Event Type:international Conference
Event Dates:1. - 4. Jul. 2019
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 - Leitprojekt - Forschungsverbund Oberstufe
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Deposited By: Hanke, Michaela
Deposited On:18 Dec 2019 16:03
Last Modified:18 Dec 2019 16:03

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