A Study on the Heat Transfer Characteristics of Magnetic Fluids in Concentric Double Pipe Annuli

이중원관내 자성유체의 열전달 특성에 관한 연구

In this study, to research characteristics of heat flow of magnetic fluid, it's studied about numerical and experimental method of natural convections change and characteristics of heat transfer in Concentric double pipe annuli as analysis model. In the result, natural convection of magnetic fluid is controlled by direction and strength of the impressed magnetic field. Especially, according to average Nusselt number, heat transfer is the smallest on the balancing point between body force and buoyancy.