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DYNAMIC CONTACT ANGLE MODEL WITH A VOF METHOD WITHIN OPENFOAM

Scheufler, Henning and Gerstmann, Jens (2016) DYNAMIC CONTACT ANGLE MODEL WITH A VOF METHOD WITHIN OPENFOAM. Space Propulsion 2016, 02.05-06.05.2016, Rom, Italien. (Unpublished)

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Abstract

The interaction of sloshing liquid propellant with the rigid body dynamics of the spacecraft or launch vehicle is of crucial importance throughout the whole mission and must be mastered by the reaction control system. It is therefore indispensable to be capable to predict the fluid behavior in all mission phases. A particular challenge is the change from the thrust phase to the ballistic phase, when the capillary forces become dominant. The reorientation process of the propellant is then driven by the contact line behavior and within the transition phase by the dynamic contact angle. A dynamic contact angle model is developed and validated with a benchmarked upon step reduction in gravity [1]. The model is implemented in the CFD OpenFOAM framework using the volume of fluid method (VOF). The results reveal the importance and contribution of the contact line behavior in case of free surface dynamics at microgravity conditions. With the developed contact angle model full-wetting liquids (zero degree contact angle) can be modeled. The CFD results show very good agreement with the experimental data and will be presented. In the next step the dynamic contact angle model will be further developed to consider thermal effects at the contact line.

Item URL in elib:https://elib.dlr.de/105021/
Document Type:Conference or Workshop Item (Speech)
Title:DYNAMIC CONTACT ANGLE MODEL WITH A VOF METHOD WITHIN OPENFOAM
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Scheufler, HenningUNSPECIFIEDUNSPECIFIED
Gerstmann, JensJens.Gerstmann (at) dlr.deUNSPECIFIED
Date:2016
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:Propellant Management, Cryogenics, Liquid Hydrogen, Liquid Methane, Sloshing, Test Facilities
Event Title:Space Propulsion 2016
Event Location:Rom, Italien
Event Type:international Conference
Event Dates:02.05-06.05.2016
Organizer:3AF, ESA, CNES, DLR, ASI
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:other
DLR - Research area:Raumfahrt
DLR - Program:R - no assignment
DLR - Research theme (Project):R - no assignment
Location: Bremen
Institutes and Institutions:Institute of Space Systems > Transport and Propulsion System
Deposited By: Behnke, Manuela
Deposited On:04 Aug 2016 11:46
Last Modified:04 Aug 2016 11:46

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