1 results listed
The heat transfer characteristics are significantly
affected at the points where the flow separation and the
reattachment regions are observed inside the ducts. Heat
transfer is enhanced by placing the blockages such as the fins, the
turbulators to trigger the flow separation between the parallel
plates. The fins placed between the horizontal parallel plates,
cause the rotational flows in front of the fins and the flow
separation by interrupting both thermal and hydrodynamic
development lengths. Furthermore, these fins are very effective
as an extended surface area element for the heat transfer
enhancement. However, the fins increase the required pumping
power in the meantime owing to the ascending pressure loss in
such systems. This aforementioned method is based on the
production of the secondary flows and the fluctuations due to the
fins and used for the heat exchangers, the solar collectors, the
cooling of electronic devices. In this study, the effect of the
rectangular cross-sectional fins on the flow characteristics has
been numerically investigated via two-dimensional analyses of k-
ω Shear Stress Transport (SST) turbulence model. The fins with
constant dimensions have been mounted on the internal surfaces
of the bottom and the top plates, periodically and symmetrically.
The flow characteristics have been presented by comparing at
the values of Reynolds numbers as 10000, 15000 and 20000.
1.st International Conference Energy Systems Engineering
ıcese'17
Ilker Goktepeli
Ulas Atmaca