NUMERICAL STUDY ON HEAT TRANSFER OF TURBULENT DUCT FLOW THROUGH RIBBED DUCT
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 4, Issue 7
Abstract
Ribs have been used as a tool to enhance heat transfer by increasing the level of turbulence mixing in the flow. Enhancing heat transfer surface are used in many engineering applications such as gas turbine blade cooling passages (i.e. channel/duct), air heater, heat exchanger surfaces, gas-cooled reactor fuel elements, ventilation equipment of micro-electronic systems and air conditioning/ refrigeration systems, hence many techniques have been investigated on enhancement of heat transfer rate and decrease the size and cost of the involving equipment especially in heat exchangers. Rib roughness on the underside of the top wall of a duct has been found to substantially enhance the heat transfer coefficient. A two-dimensional CFD investigation is conducted to study forced convection of fully developed turbulent flow in a rectangular duct having ribs on the underside of the top wall. CFD solutions are obtained using commercial software ANSYS FLUENT v12.1. The working fluid in all cases is air.
Authors and Affiliations
Priyank Lohiya*,
Keywords
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