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Examining the influence of turbulence on viscosity measurements of molten germanium under reduced gravity

Bracker, G. P. and Luo, Yuansu and Damaschke, Bernd and Samwer, Konrad and Hyers, Robert W. (2022) Examining the influence of turbulence on viscosity measurements of molten germanium under reduced gravity. npj Microgravity, 8, p. 53. Nature Publishing Group. doi: 10.1038/s41526-022-00238-z. ISSN 2373-8065.

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Official URL: https://www.nature.com/articles/s41526-022-00238-z

Abstract

The thermophysical properties of liquid germanium were recently measured both in parabolic flight experiments and on the ISS in the ISS-EML facility. The viscosity measurements differed between the reduced gravity experiments and the literature values. Since the oscillating drop method has been widely used in EML, further exploration into this phenomenon was of interest. Models of the magnetohydrodynamic flow indicated that turbulence was present during the measurement in the ISS-EML facility, which accounts for the observed difference.

Item URL in elib:https://elib.dlr.de/194075/
Document Type:Article
Title:Examining the influence of turbulence on viscosity measurements of molten germanium under reduced gravity
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Bracker, G. P.UNSPECIFIEDhttps://orcid.org/0000-0001-6288-4874UNSPECIFIED
Luo, YuansuUniversität GöttingenUNSPECIFIEDUNSPECIFIED
Damaschke, BerndUniversität GöttingenUNSPECIFIEDUNSPECIFIED
Samwer, KonradUniversität GöttingenUNSPECIFIEDUNSPECIFIED
Hyers, Robert W.University of Massachusetts, Amherst MA, USAUNSPECIFIEDUNSPECIFIED
Date:24 November 2022
Journal or Publication Title:npj Microgravity
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:8
DOI:10.1038/s41526-022-00238-z
Page Range:p. 53
Publisher:Nature Publishing Group
ISSN:2373-8065
Status:Published
Keywords:Characterization and analytical techniques, Fluid dynamics, Theory and computation
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Materials Research and Microgravity (MuM)
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Physics in Space
Deposited By: Yang, Fan
Deposited On:28 Feb 2023 06:54
Last Modified:28 Feb 2023 06:54

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