Numerical Optimisation of Heat Transfer using Pulsating Jet Array with Phase Shift

The advancement in science had led to highly complicated electronic devices and at the same time the size of such devices is getting reduced day by day. The amount of heat generated by these devices is increasing in par with its complexity. The efficiency of electronics devices decreases with increase in temperature. The cooling of these devices to their normal working temperature is a great challenge since the area available for heat transfer will be very less and there is restricted movement of air. This paper deals with jet impingement cooling, in which high velocity jets are used for removal of heat from a surface. The jets are arranged in the form of a staggered array and are pulsating in nature. To increase the turbulence in the flow domain the jets are pulsated at a phase shift. The study is carried out at different frequencies. The objective of this study is to compare the heat transfer at different combinations of frequencies and angles of phase shift and find the combination at which the heat transfer is maximum. The study is done using computational fluid dynamics software tool ANSYS Fluent version 14. Citation: Jassim Kakkattil, Mar Athanasius College of Engineering, Kothamangalam; Prof. Sabu Kurian ,Mar Athanasius College of Engineering, Kothamangalam; Dr. Biju N ,School of Engineering, CUSAT; Dr. Tide P S ,School of Engineering, CUSAT. "Numerical Optimisation of Heat Transfer using Pulsating Jet Array with Phase Shift." Global Research and Development Journal For Engineering 26 2017: 171 - 176.