期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 424, 期 -, 页码 161-173出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2016.09.123
关键词
Flexible membrane; Square cavity; Magnetic field; Natural convection; Arbitrary Lagrangian- Eulerian
资金
- Dezful Branch, Islamic Azad University, Dezful, Iran
This paper investigates numerically the problem of unsteady natural convection inside a square cavity partitioned by a flexible impermeable membrane. The finite element method with the arbitrary Lagrangian-Eulerian (ALE) technique has been used to model the interaction of the fluid and the membrane. The horizontal walls of the cavity are kept adiabatic while the vertical walls are kept isothermal at different temperatures. A uniform magnetic field is applied onto the cavity with different orientations. The cavity has been provided by two eyelets to compensate volume changes due the movement of the flexible membrane. A parametric study is carried out for the pertinent parameters, which are the Rayleigh number (10(5)-10(8)), Hartmann number (0-200) and the orientation of the magnetic field (0-180 degrees). The change in the Hartmann number affects the shape of the membrane and the heat transfer in the cavity. The angle of the magnetic field orientation also significantly affects the shape of the membrane and the heat transfer in the cavity.
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