Study on Supermagnetism and Buoyancy Principle of Magnetic Fluid

Abstract

Magnetic fluid is a new nanometer functional material with both magnetism and fluidity, which is also a green material for many polluting engineering fields. The supermagnetism of magnetic fluid was studied and the magnetic curve of magnetic fluid was measured. The first-order buoyancy principle was introduced and the buoyancy force was deduced. It was concluded that with the increasing of the current, the first-order buoyancy force of magnetic fluid increases. As the height of the object increases, the first-order magnetic buoyancy decreases slowly, and the moving object tend to move to the cup wall during the nonmagnetic object rising. The second-order principle of magnetic fluid was studied, and it was concluded that with the dimension of magnet increasing, the second-order buoyancy forces increases.