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Numerical Investigation of Cryogenic LH2 Tank Pressurization in Callisto

Krieger, Adrian Thomas Esteban and Opp, Lukas and Stief, Malte and Dumont, Etienne and Gerstmann, Jens (2023) Numerical Investigation of Cryogenic LH2 Tank Pressurization in Callisto. In: International Symposium on Space Technology and Science ISTS. ISTS - International Symposium on Space Technology and Science, 2023-06-03 - 2023-06-09, Kurme, Japan.

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Cryogenic fluid management is becoming increasingly important with the novel challenges that RLVs pose onto launchers. Especially transitions between high and low thrust, long coasting phases at low fill levels and a higher proportion of non-axial thrust induce complex flows within the propellant tanks. Within the framework of the CALLISTO-project, which is a joint effort of JAXA, CNES and DLR to develop a functional vertical take-off vertical landing (VTVL) prototype, DLR is developing the hydrogen tank. This paper presents the numerical approach to simulate the pressurization fluid behavior in order to predict pressurant budgets and thermal residuals. Numerical modelling of these internal flows incorporates multiple challenges including phase change at the liquid-gas interface, which is highly dependent on the ullage flows. For this task, simulations are performed with OpenFOAM using the dedicated TwoPhaseFlow library, which allows modeling of multiple phases, multiple species, phase change, conjugate heat transfer and includes gravity models which allow for micro-gravity interface prediction. In the presented approach, the diffusor flow and the multiphase simulation of the internal tank flow during the trajectory are solved independently and coupled with a new flexible spherical boundary condition to allow for faster and more flexible development iterations.

Item URL in elib:https://elib.dlr.de/196891/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical Investigation of Cryogenic LH2 Tank Pressurization in Callisto
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Krieger, Adrian Thomas EstebanUNSPECIFIEDhttps://orcid.org/0000-0002-2798-1828UNSPECIFIED
Opp, LukasUNSPECIFIEDhttps://orcid.org/0000-0002-6791-4267141543660
Dumont, EtienneUNSPECIFIEDhttps://orcid.org/0000-0003-4618-0572UNSPECIFIED
Journal or Publication Title:International Symposium on Space Technology and Science ISTS
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:CALLISTO, Pressurization, Hydrogen, CFD, Multiphase-Flows
Event Title:ISTS - International Symposium on Space Technology and Science
Event Location:Kurme, Japan
Event Type:international Conference
Event Start Date:3 June 2023
Event End Date:9 June 2023
Organizer:Japan Society for Aeronautical and Space Sciences
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 CALLISTO [RP]
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Transport and Propulsion System
Institute of Space Systems > Systems Engineering and Project Office
Deposited By: Krieger, Adrian Thomas Esteban
Deposited On:01 Sep 2023 09:53
Last Modified:24 Apr 2024 20:57

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