GEOMETRY EFFECTS ON THERMOHYDRAULIC BEHAVIOR OF FLUID FLOW IN A SQUARE ENCLOSURE WITH AN INNER CIRCULAR TUBE

Year 2019, Volume: 5 Issue: 3, 138 - 148, 14.03.2019

Akram Jahanbakhshi

https://doi.org/10.18186/thermal.540088

Abstract

Convective heat transfer in
non-circular channels are of interest in many industrial applications. In the
present work, fluid flow in the space between a square channel and a circular
tube with different positions of the holder rigid plate is investigated
numerically. The use of holder plates is applicable in industrial applications.
Holder plates allow different flows with different thermal and hydrodynamic
behaviors in a channel at constant Reynolds numbers. Six geometries selected to
explore the effect of the position of holder plate on heat transfer rate.
Results demonstrated that the plate position has significant effects on fluid
flow behavior. It is found that hydrodynamic and thermal behavior affected by
the plate position for different Reynolds numbers. ­ For example, for the case
that the circular tube is positioned in the center of the square channel with
two inclined plates, average convective heat transfer outside and between the
two plates is 344 Wm^-2K^-1 and 465 Wm^-2K^-1,
respectively.

Keywords

Square Channel, Forced Convection, Numerical Simulation, Holder Rigid Plate, Reynolds Number

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