Universität zu Köln

Adachi, Masato ORCID: 0000-0001-6380-0548, Balter, Michael, Cheng, Xiang ORCID: 0000-0002-7298-1800, Drescher, Jorg, Li, Xiaotian, Sperl, Matthias, Zhao, Shaofan and Yu, Peidong (2021). Characteristics of a Magnetic Bulk Thermostat for Granular Gas Investigations in Microgravity. Microgravity Sci. Technol., 33 (1). NEW YORK: SPRINGER. ISSN 1875-0494

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Abstract

A magnetic thermostat employing soft-ferromagnetic particles and a varying magnetic field has been developed to investigate a homogeneous granular gas system in microgravity. While the thermostat's mechanism of creating homogeneous distribution of the particles was shown earlier, its characteristics have not been understood well due to limited access to a microgravity environment. Therefore, a parametric study by numerical simulation based on the discrete element method is carried out in this paper to evaluate effects of tunable parameters in the thermostat. The result shows the capability of the system and provides a wide range of options and improvements for future experiments. Moreover, it predicts that the thermostat allows variation of homogeneity and excitation level of the granular gas just by changing the magnetic parameters without using any mechanical means. In addition, the suggested improvement is experimentally implemented and evaluated in a drop tower test.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Adachi, Masato UNSPECIFIED orcid.org/0000-0001-6380-0548 UNSPECIFIED Balter, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Cheng, Xiang UNSPECIFIED orcid.org/0000-0002-7298-1800 UNSPECIFIED Drescher, Jorg UNSPECIFIED UNSPECIFIED UNSPECIFIED Li, Xiaotian UNSPECIFIED UNSPECIFIED UNSPECIFIED Sperl, Matthias UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhao, Shaofan UNSPECIFIED UNSPECIFIED UNSPECIFIED Yu, Peidong UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-578525
DOI:	10.1007/s12217-020-09853-5
Journal or Publication Title:	Microgravity Sci. Technol.
Volume:	33
Number:	1
Date:	2021
Publisher:	SPRINGER
Place of Publication:	NEW YORK
ISSN:	1875-0494
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language Engineering, Aerospace; Thermodynamics; Mechanics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/57852