Experimental Thermo-Magnetic Convection Analysis in Tall Rectangular Enclosure

7th European Thermal-Sciences Conference

Pyrda, L.^1 ; Kraszewska, A.^1

AGH University of Science and Technology, Department of Fundamental Research in Energy Engineering, Faculty of Energy and Fuels, Krakow, Poland^1

关键词: Augmented heat transfers;    High magnetic fields;    Magnetic convection;    Magnetic field gradient;    Paramagnetic fluid;    Rectangular enclosures;    Tall rectangular enclosures;    Temperature signal;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/745/3/032155/pdf
DOI  :  10.1088/1742-6596/745/3/032155

来源: IOP

【 摘 要 】

Rectangular enclosure with aspect ratio (AR=height/width) 2 was investigated in experimental thermo-magnetic convection analysis. Experimental enclosure was placed inside superconducting magnet in Rayleigh-Bénard configuration, in position, where magnetic field gradient was enhancing natural convection. Two types of paramagnetic fluid behaviour were identified at different magnetic induction values. It was possible by utilization of Fast Fourier Transform of recorded temperature signals inside experimental enclosure. Presented results shown augmented heat transfer in rectangular enclosure at high magnetic field gradient up to 300%. Transition zone of fluid behaviour for presented experimental setup was observed from RaTM•4-107to RaTM•1.3•108.