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ISSN Online: 2377-424X

ISBN Print: 978-1-56700-421-2

International Heat Transfer Conference 15
August, 10-15, 2014, Kyoto, Japan

Thermo-Hydrodynamic Characteristics of Magnetothermal Wind Created in a Tube in Gravitational and Non-Gravitational Fields

Get access (open in a dialog) DOI: 10.1615/IHTC15.fcv.009295
pages 3193-3204

Resumo

The long-term goal of the present research is to establish a new technique for separating oxygen in the air by applying magnetic force. As a first step toward achieving this goal, in this study we carried out transient numerical computations to clarify the thermo-hydrodynamic characteristics of magnetothermal wind created in a tube located inside the bore space of a superconducting magnet. The numerical analysis model considered uses two coaxial tubes with open ends. The outer tube corresponds to the bore space, and the inner one was installed inside the bore space. The inner tube was initially filled with hotter air or colder air compared to that in the outer tube. We first examined the thermo-hydrodynamic characteristics of the magnetothermal winds created in a nongravitational field to clarify the effect of the magnetic force alone. The magnetothermal wind was created by the magnetic force alone with interaction by the temperature difference between the air in the inner and outer tubes. Unique magnetothermal winds were induced, and the contributions of the induced magnetic force to the magnetothermal winds were clarified. Next, we examined the thermo-hydrodynamic characteristics of the magnetothermal winds created in a gravitational field to clarify the effects of both the magnetic and the gravitational buoyant forces. Although complicated flows were observed compared to that in the nongravitational field, these phenomena are explained theoretically based on our discussion in a nongravitational field.