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Cavitation Prediction in the LUMEN LCH4 Pump

Groll, Christopher and Traudt, Tobias and Oschwald, Michael and Schlechtriem, Stefan (2021) Cavitation Prediction in the LUMEN LCH4 Pump. 11th International Symposium on Cavitation, 2021-05-10 - 2021-05-13, Daejon, Korea.

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This paper presents efforts made to predict cavitation within the centrifugal propellant pumps of the LUMEN (Liquid Upper stage deMonstrator ENgine) open expander cycle breadboard rocket engine. Specifically, the occurrence of cavitation within the fuel pump is examined. This is of interest as cavitation influences both the operating behavior of the pump as well as its operational safety. To facilitate the definition of an appropriate inlet pressure in upcoming tests and enhance the turbopump design capabilities at DLR, the functionality of the Ansys CFX flow solver is extended to account for the thermodynamic effect which significantly influences cavitation in liquids close to the critical point. The implemented model is validated against experimental data from literature and good agreement is shown. The cavitation model is applied to flow simulations of the LCH4 pump for its design operating point. It is found that the total inlet pressure must not decrease below 7 bar in order to limit cavitation while ensuring the generation of the head required by the engine.

Item URL in elib:https://elib.dlr.de/191453/
Document Type:Conference or Workshop Item (Other)
Title:Cavitation Prediction in the LUMEN LCH4 Pump
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Groll, ChristopherUNSPECIFIEDhttps://orcid.org/0000-0001-9183-7081134252396
Traudt, TobiasUNSPECIFIEDhttps://orcid.org/0000-0002-0206-0483UNSPECIFIED
Oschwald, MichaelUNSPECIFIEDhttps://orcid.org/0000-0002-9579-9825UNSPECIFIED
Schlechtriem, StefanDLR Lampoldshausen, Institut für Raumfahrtantriebehttps://orcid.org/0000-0002-3714-9664UNSPECIFIED
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Turbopump, Cavitation, Liquid Methane, Rocket Engine, LUMEN
Event Title:11th International Symposium on Cavitation
Event Location:Daejon, Korea
Event Type:international Conference
Event Start Date:10 May 2021
Event End Date:13 May 2021
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transportation
DLR - Research area:Raumfahrt
DLR - Program:R RP - Space Transportation
DLR - Research theme (Project):R - Project LUMEN (Liquid Upper Stage Demonstrator Engine)
Location: Lampoldshausen
Institutes and Institutions:Institute of Space Propulsion > Rocket Propulsion
Deposited By: Groll, Christopher
Deposited On:02 Dec 2022 08:13
Last Modified:24 Apr 2024 20:52

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