Experimental Investigation on Effects of Trapezoidal Ribs on Heat Transfer Enhancement with EHD Active Method into Duct

Document Type : Research Article

Author

دانشگاه شهیدمدنی آذربایجان-تبریز

Abstract

In this study, the heat transfer enhancement on trapezoidal ribs established on the floor of rectangular duct is investigated. These ribs were used as heat sources and cooling of them has been achieved with EHD active method by experimental procedure. The flow was three dimensional, steady, viscous and incompressible with regimes of both laminar and turbulent(Re=500,2000 and 4500). The hydrodynamic and heat transfer behavior of air flow was studied by EHD active method with application of corona wind. The aim of this work is application of EHD active method for convective heat transfer enhancement. In this method, two arrangements of wire electrodes have been achieved. The results show that in the same Reynolds numbers and voltages of wire electrodes, the heat transfer enhancement was increased in arrangement 2 than arrangement 1.



In this study, the heat transfer enhancement on trapezoidal ribs established on the floor of rectangular duct is investigated. These ribs were used as heat sources and cooling of them has been achieved with EHD active method by experimental procedure. The flow was three dimensional, steady, viscous and incompressible with regimes of both laminar and turbulent(Re=500,2000 and 4500). The hydrodynamic and heat transfer behavior of air flow was studied by EHD active method with application of corona wind. The aim of this work is application of EHD active method for convective heat transfer enhancement. In this method, two arrangements of wire electrodes have been achieved.

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