Nanofluids have novel properties that make them potentially useful in many applications in heat transfer, including microelectronics, fuel cells, pharmaceutical processes, and hybrid-powered engines, engine cooling/vehicle thermal management, domestic refrigerator, chiller, heat exchanger, in grinding, machining and in boiler flue gas temperature reduction. They exhibit enhanced thermal conductivity, and the convective heat transfer coefficient compared to the base fluid.
Optimizing cooling processes by fluid is very important in many industries such as power generation, transportation, automation and electronics. The equipment for heat transferring to achieve higher efficiency requires minifying of equipment and increase the heat transfer rate per unit area. Fluids such as water and ethylene glycol, due to their low thermal properties, have a limited ability to transfer heat. Conversely, metals have a thermal conductivity coefficient of up to three times of fluids. The idea ofcombination of these two materials in order to create a heat transfer field that acts like a fluid and conducts the heat like a metal is based on this theory. However, problems such as clogging and corrosion of fluid flow channels, rapid sedimentation and excessive pressure drop have been reported. One of the most suitable methods for solving this problem is the use of magnetic fluids and magnetic fields. Magnetic nano-fluid or ferrofluid are in fact a particular kind of nano-fluid in which magnetic nanoparticles of about 3 to 15 nm are stably dissolved in a base fluid such as water or oil. By applying the magnetic field in different directions and degrees, it is possible to control the hydrodynamic and thermal behavior of these fluids. This is an important advantage for this kind of nanofluids.
TITLE: CFD SIMULATION OF NANO-FLUID AND EFFECTS OF MAGNETIC FIELDS ON MAGNETIZABLE FLOW
SOFTWARE: ANSYS FLUENT
PROJECT TYPE: HEAT TRANSFER
TIME: 2 WEEKS