Research Projects

A nanoparticle is usually defined as a particle of matter that is between 1 and 100 nanometres (nm) in diameter. Magnetic Nanofluids are colloids of magnetic nanoparticles, such as Fe_3 O_4, gama-Fe_2 O_3, CoFe_2 O_4, Co, Fe or Fe-C , stably dispersed in a carrier liquid such as water or oil. Consequently, these special category of nanomaterials manifest simultaneously fluid and superparamagnetic properties. The possibility of magnetic control over their properties and flow triggered both basic and application orientated researches. Recently, magnetic nanofluids with magnetic nanoparticles dispersed in oil or water have been used in areas to increase the efficiency of power generation systems. In addition to the generation of power through the back-and-forth movement of magnetic flow, the generation of power through changing the magnetic field using different methods can also be used. The propose of this study is for selection of suitable magnetic nanofluids for thermomagnetic convection to generate optimum power generation through the study of the flow structures of thermomagnetic convection through flow visualization and velocity measurement using PIV for different roughened inner surfaces of tube. Also we introduce proper correlations for particular input parameters based on experimental results. By this, we can set up proper design criteria for optimum generation of power for a particular heating input e.g. waste heat or any renewable energy.