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Title

EFFECT OF MAGNETIC FIELD ON THE ROTATING FLOW IN A SIMILAR CZOCHRALSKI CONFIGURATION

Pages

 Start Page 563 | End Page 571

Abstract

 We present a numerical study of the ROTATING FLOW generated by two rotating disks in co-/counterrotating, inside a fixed cylindrical enclosure similar to the CZOCHRALSKI configuration (Cz). The enclosure having an aspect ratio A=H/Rc equal to 2, filled with a low Prandtl number fluid (Pr=0.011), which is submitted to a vertical temperature gradient. The finite volume method has been used to solve numerically the governing equations of the studied phenomenon. We present the steady state flow; and make a comparison between the flow generated by the co-/counter-rotating end disks. This study was caried out for different Richardson numbers; Ri=0.01, 0.1, 0.5, 1, 2, 3, 5 and 10. The effect of orientation of the MAGNETIC FIELD is also taken into account for different values of the Hartmann number (Ha=0, 5, 10, 20, 30 and 50). The obtained results show that the strongest stabilisation of the velocity field and heat transfer occurs when the flow generated byco-rotating end disks and the applied of MAGNETIC FIELD in radial direction provied a more stabilisation of the convective flow.

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