Open Access
ARTICLE
FREE CONVECTIVE HEAT TRANSFER CREATED FROM HEATED CYLINDER IMMERSED INSIDE DUCT COOLED FROM SIDE
Qais Abid Yousifa
, Omar Rafae Alomara,*, Obed M. Alib
, Omar Mohammed Alic
a Northern Technical University, Engineering Technical College of Mosul, Cultural Group Street, Mosul, 41002, Iraq
b Northern Technical University, Technical Institute Alhuija, Kirkuk, 36001 ,Iraq
c University of Zakho, Collage of Mechanical Engineering,Kurdistan Region, 42002,Iraq
* Corresponding author. Email: omar.alomar@ntu.edu.iq
Frontiers in Heat and Mass Transfer 2023, 20, 1-14. https://doi.org/10.5098/hmt.20.20
Abstract
This work involves a numerical investigation on free convection heat transfer occurred by a hot cylinder immersed in a square duct cooled from one
side under different temperatures. Simulations have been done for a large ranges of Rayleigh number (10
3
≤
Ra ≤10
7
) and right wall temperature (0≤
Tr
≤0.75). The results displayed that
Nu is enhanced with rising in
Ra and decreasing in
Tr. The value of
Nu is decreased with rising in
Tr, where the
maximum reduction in
Nu is about 32% for
Tr=0.75 as compared to
Tr=0. The maximum enhancement range for
Nu is found between 50% and 100%
for low
Ra and between 20% and 30 % for high
Ra. The variations of local
Nu display that
Ra has an extremely actions on the characteristics of flow
and temperature fields.
Keywords
Cite This Article
Yousif, Q. A., Ali, O. M. (2023). FREE CONVECTIVE HEAT TRANSFER CREATED FROM HEATED CYLINDER IMMERSED INSIDE DUCT COOLED FROM SIDE.
Frontiers in Heat and Mass Transfer, 20(1), 1–14.