The Effect Of Plate Geometry On Flow And Heat Transfer Across A Parallel Plate Heat Exchanger

Cho, Wei Yang (2015) The Effect Of Plate Geometry On Flow And Heat Transfer Across A Parallel Plate Heat Exchanger. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 pages) The Effect Of Plate Geometry On Flow And Heat Transfer Across A Parallel Plate Heat Exchanger 24 Pages.pdf - Submitted Version Download (777kB)

Abstract

When a flow is flowing past a blunt body or solid boundaries, there will be formation of flow patterns and interactions between flow and the solid bodies. Other than that, heat transfer can also take place if there is a temperature difference between the flow and solid bodies. In this study, a pile of parallel-plates was considered as the solid bodies. A simplified model of parallel-plate heat exchanger was chosen as the computational domain in order to study of effect of plate geometry and channel dimensions on the flow and heat transfer across a parallel-plate heat exchanger. There will be an oscillatory flow where the flow moves back and forth across the solid boundaries. The study was carried out using ANSYS software. Drawing of the computational domain, meshing of the domain, solver settings and validation of the model were carried out before the study can be recognized. After having done validation, the results and data from the original model were compared with other three cases. One of the three cases has round-shaped edges for its parallel-plates heat exchanger. The remaining two cases have triangle-shaped edges with one having two times longer edge length of the other one. All the cases were compared in terms of vorticity contours, total and average surface heat flux and last but not least, velocity profile inside the channel. The study shows that the shape of the edge affects the flow and the heat transfer of the system. Vortices discontinuities were eliminated through the changing of edge shapes. Heat energy transfer across the surface also changes when the shape of the edge changes.

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