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Title: Effects of symmetry on magnetohydrodynamic mixed convection flow in a vertical duct
Magnetohydrodynamic convection in a downward flow of liquid metal in a vertical duct is investigated experimentally and numerically. It is known from earlier studies that in a certain range of parameters, the flow exhibits high-amplitude pulsations of temperature in the form of isolated bursts or quasi-regular fluctuations. This study extends the analysis while focusing on the effects of symmetry introduced by twosided rather than one-sided wall heating. It is found that the temperature pulsations are robust physical phenomena appearing for both types of heating and various inlet conditions. At the same time, the properties, typical amplitude, and range of existence in the parametric space are very different at the symmetric and asymmetric heating. The obtained data show good agreement between computations and experiments and allow us to explain the physical mechanisms causing the pulsation behavior.  more » « less
Award ID(s):
1803730
PAR ID:
10282596
Author(s) / Creator(s):
; ; ; ; ; ;
Date Published:
Journal Name:
Physics of fluids
Volume:
32
ISSN:
1070-6631
Page Range / eLocation ID:
094106
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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