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Analysis of LN2 Filling, Draining, Stratification and Sloshing Experiments

Konopka, Martin and Nöding, Peter and Klatte, Jörg and Behruzi, Philipp and Stark, Anton and Darkow, Nicolas and Gerstmann, Jens (2016) Analysis of LN2 Filling, Draining, Stratification and Sloshing Experiments. 46th AIAA Fluid Dynamics Conference, 25-27.07.2016, Salt Lake City, Utah. DOI: 10.2514/6.2016-4272 ISBN 978-162410436-7

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Abstract

The accurate prediction of the mechanical and thermodynamic behavior of cryogenic liquids in tanks of liquid propelled rocket stages is critical for the design of the tank layout, the pressurization system, and the control algorithm. To analyse the behavior of cryogenic liquids in tanks before and during flight, a set of LN2 experiments with a cryogenic tank with a volume of 711 l was performed. In the first test campaign, first mode sloshing and damping was investigated at different fill levels. In the second test campaign, the stratifica-tion of the liquid and wall temperature behavior during LN2 tank fillingof the unchilled tank, during chilled tank draining, and at a constant fill level was investigated.In the third test campaign, the pressure evolution during first mode sloshing was investigated at different helium concentration levels. For each test campaign, a representative case is presentedand analysed in the current paper. Furthermore, numerical predicitions using the commercial flow solver Flow-3Dand an in-house tool to determine the tank pressure evolution are com-pared with the experiments, showing good agreement.

Item URL in elib:https://elib.dlr.de/105016/
Document Type:Conference or Workshop Item (Speech)
Title:Analysis of LN2 Filling, Draining, Stratification and Sloshing Experiments
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Konopka, MartinUNSPECIFIEDUNSPECIFIED
Nöding, PeterUNSPECIFIEDUNSPECIFIED
Klatte, JörgUNSPECIFIEDUNSPECIFIED
Behruzi, PhilippUNSPECIFIEDUNSPECIFIED
Stark, AntonAnton.Teichler (at) dlr.dehttps://orcid.org/0000-0003-3218-4804
Darkow, NicolasNicolas.Darkow (at) dlr.deUNSPECIFIED
Gerstmann, JensUNSPECIFIEDUNSPECIFIED
Date:2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2016-4272
ISBN:978-162410436-7
Status:Published
Keywords:sloshing, cryogenic, LN2 Filling, Draining, Stratification
Event Title:46th AIAA Fluid Dynamics Conference
Event Location:Salt Lake City, Utah
Event Type:international Conference
Event Dates:25-27.07.2016
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: Bremen
Institutes and Institutions:Institute of Space Systems > Transport and Propulsion System
Deposited By: Behnke, Manuela
Deposited On:04 Aug 2016 11:37
Last Modified:26 Apr 2017 12:50

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