TY - JOUR ID - TI - Analytical Study of Combined Convection Heat Transfer for Flow in a Horizontal Annulus AU - Iqbal .K. Eraebee اقبال خلف عريبي AU - Mushtaq .I. Hasan د .مشتاق اسماعيل حسن AU - Ahmed .J. Shkarah احمد جاسم شكاره PY - 2011 VL - 2 IS - 2 SP - 26 EP - 40 JO - University of Thi-Qar Journal for Engineering Sciences مجلة جامعة ذي قار للعلوم الهندسية SN - 26645564 26645572 AB - In this paper a numerical investigation is made to study the axially symmetric, laminar air flow in the entrance region of an annulus by solving the two dimensional governing equations of motion ( continuity, momentum & energy ) using implicit finite difference method and the Gauss elimination technique. A STAR CCM + program is used. The results obtained for velocity and temperature profile revealed that, the secondary flow created by natural convection have a significant effect on the heat transfer process. A comparison has been made for results which show a good agreement.

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