Magnetic field dynamos and magnetically triggered flow instabilities

Final LIMTECH Colloquium and International Symposium on Liquid Metal Technologies

材料科学;金属学

Stefani, F.^1 ; Albrecht, T.^2 ; Arlt, R.^3 ; Christen, M.^4 ; Gailitis, A.^5 ; Gellert, M.^3 ; Giesecke, A.^1 ; Goepfert, O.^6 ; Herault, J.^7 ; Kirillov, O.N.^8 ; Mamatsashvili, G.^1 ; Priede, J.^9 ; Rüdiger, G.^3 ; Seilmayer, M.^1 ; Tilgner, A.^6 ; Vogt, T.^1

Helmholtz-Zentrum Dresden - Rossendorf, Bautzner Landstraße 400, Dresden

D-01328, Germany^1

Department of Mechanical and Aerospace Engineering, Monash University, VIC

3800, Australia^2

Leibniz-Institut für Astrophysik Potsdam, An der Sternwarte 16, Potsdam

D-14482, Germany^3

Technische Universitat Dresden, Institut für Energietechnik, Dresden

D-01062, Germany^4

Institute of Physics, University of Latvia, Miera iela 32, Salaspils

LV-2169, Latvia^5

Institute of Geophysics, University of Göttingen, Friedrich-Hund-Platz 1, Göttingen

D-37077, Germany^6

Laboratoire des Sciences du Numérique de Nantes (LS2N), CNRS, IMT Atlantique, Nantes, France^7

Northumbria University Mathematics Physics and Electrical Engineering, Ellison Building D219, Newcastle-upon-Tyne

NE1 8ST, United Kingdom^8

Flow Measurement Research Centre, Coventry University, United Kingdom^9

关键词: Cosmic magnetic fields;    Flow instabilities;    Hydromagnetic dynamo effects;    Liquid metal experiments;    Magnetohydrodynamic instabilities;    Magnetorotational instability;    Rotating flow;    Thermo-hydraulic;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/228/1/012002/pdf
DOI  :  10.1088/1757-899X/228/1/012002

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The project A2 of the LIMTECH Alliance aimed at a better understanding of those magnetohydrodynamic instabilities that are relevant for the generation and the action of cosmic magnetic fields. These comprise the hydromagnetic dynamo effect and various magnetically triggered flow instabilities, such as the magnetorotational instability and the Tayler instability. The project was intended to support the experimental capabilities to become available in the framework of the DREsden Sodium facility for DYNamo and thermohydraulic studies (DRESDYN). An associated starting grant was focused on the dimensioning of a liquid metal experiment on the newly found magnetic destabilization of rotating flows with positive shear. In this survey paper, the main results of these two projects are summarized.