کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
669636 | 1458801 | 2009 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Flow and heat transfer characteristics in an annulus wrapped with a helical wire
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Flow and heat transfer characteristics in an annulus wrapped with a helical wire Flow and heat transfer characteristics in an annulus wrapped with a helical wire](/preview/png/669636.png)
چکیده انگلیسی
Convective heat transfer for an annulus, having its inner cylinder wrapped with a helical wire, has been numerically studied. Constant heat flux boundary condition is applied at the inner wall of the annulus whereas the outer wall is insulated. The computer code with k-omega SST turbulence model has been validated with the results of bare annulus. Several numerical results such as variations in velocity, pressure, vorticity, turbulent kinetic energy, temperature, friction factor and Nusselt number are presented for various annulus diameter ratios (D/d=1.5, 1.8 and 2.0), pitch ratios (P/d=9.09, 18.18 and 30.30), wire diameter ratios (Dw/d=0.15, 0.25 and 0.30) and Reynolds number (Re=20000 to 180000). The zones of possible hot-spots in the cusp region close to the wrap-wire are discerned.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Thermal Sciences - Volume 48, Issue 7, July 2009, Pages 1377-1391
Journal: International Journal of Thermal Sciences - Volume 48, Issue 7, July 2009, Pages 1377-1391
نویسندگان
T. Sreenivasulu, B.V.S.S.S. Prasad,