Open Access
ARTICLE
EFFECT OF SEMI-CIRCLE RIB ON HEAT TRANSFER COEFFICIENT IN A RECTANGULAR CHANNEL
Riyadh S. Al-Turaihi
a
, Doaa Fadhila,b,*, Azher M. Abedb
a Department of Mechanical Engineering, University of Babylon, Iraq
b Air conditioning and Refrigeration Techniques Engineering Department, Al-Mustaqbal University College, Babylon, 51001, Iraq
* Corresponding Author: Email: Doaa
Frontiers in Heat and Mass Transfer 2019, 13, 1-7. https://doi.org/10.5098/hmt.13.29
Abstract
In this paper an experimental and numerical analysis has been conducted to study the effect of heat transfer and filed flow of two-phase flow (water
and air) through a rectangular ribbed channel. The study has involved the several values of heat flux (120,140,160 Watts), air and water superficial
velocity (1.096, 1.425, 1.644, 1.864, and 2.193 m/s) and (0.0421, 0.0842, and 0.1474 m/s), respectively. The distribution of temperature along the
channel was photographed using thermal camera and compared with numerical results . The experimental test system was fabricated of vertical
rectangular channel with cross section of (0.08m × 0.03m) and a length (0.7 m) to analyze the behavior of the mixture (water-air) over the heated
plate (semi-circle ribs ). The computational fluid dynamics CFD software was utilized to simulate the governing equations with initial and boundary
conditions. Results found that the ribbed channel give the high heat transfer rate compared to the smooth channel. The percentage deviation between
the experimental and numerical data is (1.0% - 6.0% ). The results proved that the flow is growing to become turbulent, eddies develop about the
heated plate (rib), the temperature at the outlet decreases and heat transfer coefficient improved by adding ribs, it also improved when the velocities
of the flow increased.
Keywords
Cite This Article
Al-Turaihi
, R. S., Abed, A. M. (2019). EFFECT OF SEMI-CIRCLE RIB ON HEAT TRANSFER COEFFICIENT IN A RECTANGULAR CHANNEL.
Frontiers in Heat and Mass Transfer, 13(1), 1–7.