عنوان المقالة:الحمل الطبيعي المانيطوهيدروديناميكي المتذبذب لمعدن سائل بين اسطوانات محورية عمودية Oscillatory Magnetohydrodynamic Natural Convection of Liquid Metal between Vertical Coaxial Cylinders
فاتح مبارك اودينة | Mebarek Oudina Fateh | 10731
نوع النشر
مجلة علمية
المؤلفون بالعربي
فاتح مبارك أودينة...
المؤلفون بالإنجليزي
Fateh Mebarek Oudina...............
الملخص العربي
A numerical study of oscillatory magnetohydrodynamic (MHD) natural convection of liquid metal between vertical coaxial cylinders is carried out. The motivation of this study is to determine the value of the critical Rayleigh number, Racr for two orientations of the magnetic field and different values of the Hartmann number (Harand Haz) and aspect ratios A. The inner and outer cylinders are maintained at uniform temperatures, while the horizontal top and bottom walls are thermally insulated. The governing equations are numerically solved using a finite volume method. Comparisons with previous results were performed and found to be in excellent agreement. The numerical results for various governing parameters of the problem are discussed in terms of streamlines, isotherms and Nusselt number in the annuli. The time evolution of velocity, temperature, streamlines and Nusselt number with Racr, Har, Haz, and A is quite interesting. We can control the flow stability and heat transfer rate in varying the aspect ratio, intensity and direction of the magnetic field.
تاريخ النشر
01/10/2016
الناشر
Journal of Applied Fluid Mechanics
رقم المجلد
9
رقم العدد
4
ISSN/ISBN
1735-3572
رابط DOI
https://doi.org/10.18869/acadpub.jafm.68.235.24813
الصفحات
1655-1665
الكلمات المفتاحية
MHD; Numerical modeling; Liquid metal; Natural convection; Hydrodynamic stability; Cylindrical annulus.
رجوع