کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7056043 1458049 2016 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetohydrodynamic counter-rotating flow in a cylindrical cavity
ترجمه فارسی عنوان
جریان متقاطع مغناطیسی هیدرویدیامیک در یک حفره استوانه ای
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
چکیده انگلیسی
Three-dimensional steady combined free and forced convective magnetohydrodynamic (MHD) flow are simulated in a cylindrical cavity filled with a liquid metal and submitted to a vertical temperature gradient and an axial magnetic field. The forcing corresponds to a swirling flow produced by counter-rotation of the top and bottom disks. The governing Navier-Stokes, energy, and potential equations along with appropriate boundary conditions are solved by using the finite-volume method. Comparisons with previous results were performed and found to be in excellent agreement. The effects of magnetic field on flow and temperature fields are analysed. When the Reynolds number is increased, the axisymmetric basic state loses stability and different complex flow appear. Axisymmetric (m = 0) and asymmetric m = 1 and m = 2 azimuthal modes are observed. Azimuthal mode m = 3 are found when the Hartmann number, Ha is sufficiently large. In the mixed convection case the m = 1 becomes the dominant mode in place of m = 0. The stability diagram (Recr-Ha) corresponding to the transition from axisymmetric to non-axisymmetric flow by increasing values of the Richardson number is obtained.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 93, February 2016, Pages 175-185
نویسندگان
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