Open AccessMicro-gravity effect in a magnetic field
Author(s) -
Zhang Wen
Publication year - 2009
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.58.2405
Subject(s) - grashof number , magnetic field , buoyancy , physics , natural convection , thermomagnetic convection , mechanics , field (mathematics) , gravitational field , convection , condensed matter physics , classical mechanics , nusselt number , quantum mechanics , mathematics , reynolds number , pure mathematics , turbulence
The magnetic field microgravity effect is the phenomenon that a secondary microgravity is produced when a magnetic field is introduced into an electricconducting liquid, leading to the decline or extinction of the natural convection driven by buoyancy. The effect level could be described by the formula gmβ0/βmν0 /νm2 g0, according to the change of Grashof number. If neglecting β changes, the formula is simplified to gmν0/νm2 g0, by which the effect levels corresponding to different horizontal magnetic field strengths were estimated on the basis of the measurement of the viscosities of silicon melt under different conditions of the magnetic field. The results showed that the estimated results agree with the experimental data.