DNS OF NATURAL CONVECTION IN LIQUID METAL WITH SRTONG MAGNETIC FIELD IN RECTANGULAR BOX etc15 Tracking Number 306Presentation: Session: Magnetohydrodynamics 2 Room: Room F Session start: 15:00 Tue 25 Aug 2015 Wenjun Liu wenjun.liu@tu-ilmenau.de Affifliation: TU-Ilmenau, Germany Dmitry Krasnov dmitry.krasnov@tu-ilmenau.de Affifliation: TU-Ilmenau, Germany Andre Thess andre.thess@dlr.de Affifliation: DLR, Stuttgart, Germany Topics: - MHD turbulence, - Thermally driven turbulence Abstract: Direct numerical simulations of natural convection in liquid metal within rectangular box heated uniformly from below with uniform strong vertical magnetic field are conducted. The main aim is to explore the possibilities and mechanisms of convection instabilities in such flows. The effects of parameter range on the flow structure, i.e. variations in Hartmann number, Rayleigh number and aspect ratio, are analyzed. It is shown that the magnetic field can completely change the structure and orientation of convection rolls by leading a new flow structure lined magnetic field. And if the magnetic field is strong enough, convection in the system can be fully suppressed. |