無重力場において高温空気または低温空気から誘起された磁気熱対流

抄録

In this study we carried out transient numerical computations to scrutinize the behavior of magnetothermal convection created in a circular pipe located inside the bore space of a superconducting magnet in a nongravitational field. The numerical analysis model considered uses two coaxial circular pipes with open ends. The outer pipe corresponds to the bore space, and the inner one was installed inside the bore space. The inner pipe was initially filled with hotter air or colder air compared to that in the outer pipe. We first examined the behavior of the magnetothermal convections created in a gravitational field to clarify the effects of both the magnetic and the gravitational buoyant forces. Next, we investigated the behavior of the magnetothermal convections created in a nongravitational field to clarify the effect of the magnetic force alone. The magnetothermal convection was created by the magnetic force alone with interaction by the temperature difference between the air in the inner and outer pipes.