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Predicting Flashing Phenomena: A Combined Approach of Numerical Simulation and Experiments

Hendrich, C. and Gury, L. and Schlechtriem, S. (2016) Predicting Flashing Phenomena: A Combined Approach of Numerical Simulation and Experiments. 52nd AIAA/SAE/ASEE Joint Propulsion Conference, 25.-27. Juli 2016, Salt Lake City, Utah, USA.

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Abstract

The German Aerospace Center (DLR) in Lampoldshausen is investigating new methods for injection and ignition of new green propellants at near vacuum conditions. In this case the focus is on energetic ionic liquids (EIL) based on ammonium dinitramide (ADN). These are thought to be promising substitutes for hydrazine. During the experimental campaign with di�erent transparent injectors (L/D, contraction ratio, nozzle length), nucleation en- hancing internal low regimes like cavitation and even hydraulic ip were detected. The latter two most likely lead to segregation of the propellants and crystallization of the solved ADN-salt. To predict and avoid these phenomena, test cases were repeated with ANSYS® CFX 15.0 and compared to the experimental data.

Item URL in elib:https://elib.dlr.de/107893/
Document Type:Conference or Workshop Item (Speech)
Title:Predicting Flashing Phenomena: A Combined Approach of Numerical Simulation and Experiments
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hendrich, C.christian.hendrich (at) dlr.deUNSPECIFIED
Gury, L.Institut für Raumfahrtantriebe, DLR LampolshausenUNSPECIFIED
Schlechtriem, S.stefan.schlechtriem (at) dlr.deUNSPECIFIED
Date:27 July 2016
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:new green propellants, vacuum conditions,
Event Title:52nd AIAA/SAE/ASEE Joint Propulsion Conference
Event Location:Salt Lake City, Utah, USA
Event Type:international Conference
Event Dates:25.-27. Juli 2016
Organizer:AIAA
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 - Vorhaben ForTrAS - Fortschrittliche Treibstoffe für Anwendungen im Satellitenbereich
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Propellants
Deposited By: Schmidt, Melanie
Deposited On:17 Nov 2016 08:01
Last Modified:17 Nov 2016 08:01

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