کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4992296 | 1457258 | 2017 | 40 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Nanofluid flow in micro-annular tubes at constant wall temperature considering the non-uniform distribution of nanoparticles
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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: Nanofluid flow in micro-annular tubes at constant wall temperature considering the non-uniform distribution of nanoparticles Nanofluid flow in micro-annular tubes at constant wall temperature considering the non-uniform distribution of nanoparticles](/preview/png/4992296.png)
چکیده انگلیسی
In this paper, the modified two-component non-homogeneous mixture model of Buongiorno is developed for the case of forced convection of alumina-water non-homogeneous nanofluid flow in concentric micro-annular tubes at constant wall temperature (CWT). Two different thermal boundary conditions have been considered such that for Case A the inner wall is adiabatic and the outer wall is kept at a constant temperature while for Case B the inner wall temperature remains constant and the outer wall is thermally isolated. Assuming a hydrodynamically and thermally fully developed flow, the governing equations of nanofluids in a concentric annulus are reduced to a nonlinear system of ordinary differential equations and solved using an appropriate reciprocal numerical algorithm via Runge-Kutta-Fehlberg method. The effects of NBT (from 0.7 to 10), ÏB (from 0.01 to 0.03), λ (from 0.05 to 0.2) and ζ (0.4, 0.5 and 0.6) on the non-dimensional volume fraction of nanoparticles, velocity, and temperature profiles have been investigated for both cases. It is indicated that the anomalous heat transfer enhancement depends on the thermal boundary condition as well as the ratio of thermophoresis and Brownian motion. Furthermore, for Case B, there is an optimum nanoparticle diameter around 0.5
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: European Journal of Mechanics - B/Fluids - Volume 65, SeptemberâOctober 2017, Pages 472-485
Journal: European Journal of Mechanics - B/Fluids - Volume 65, SeptemberâOctober 2017, Pages 472-485
نویسندگان
M. Zamani, A. Malvandi, S.A. Moshizi, S.J. Hosseini,