Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 978-1-56700-421-2

International Heat Transfer Conference 15
August, 10-15, 2014, Kyoto, Japan

Numerical Investigation of Fluid Flow and Heat Transfer Characteristics of Partial Length Pin Fins in Vertical Parallel Plate Channel

Get access (open in a dialog) DOI: 10.1615/IHTC15.hte.008825
pages 3937-3948

Abstrakt

This paper presents the results of a full three dimensional numerical investigation of forced convection heat transfer in a vertical parallel plate channel filled partially with a cluster of pin fins along its height. This novel approach of having pin fins on both vertically heated plates can be employed in applications like internal cooling of trailing edge of turbine blades and electronic equipment cooling. However, enhanced heat transfer is achieved at the cost of extra pressure drop. With increasing miniaturization and packaging of electronic components, there is a need to cool multiple electronic components but with space constraint. The axes of the pin fins are aligned horizontally with air flow from the bottom to the top. The pin fins on both the vertical plates are placed in an inline arrangement. A transitional flow regime with Re > 200 is considered. The vertical plates are maintained at 375K and conjugate heat transfer boundary condition is applied so as to approximate realistic working conditions. Simulations are carried out with Ansys Fluentc13 to predict the fluid flow and temperature fields. The k ?  turbulence model with enhanced wall treatment is applied to model turbulence closure. The vertical channel with no pin fins is used for the baseline comparisons. The pressure drop, Nusselt number and overall thermal performance in terms of two dimensionless parameters are obtained for the system. Dependency of Nusselt number on the Reynolds number and fin density is deduced.