Magnetic pressure and shape of ferrofluid seals in cylindrical structures

摘要: This paper presents a three-dimensional analytical model for studying the shape and pressure of ferrofluid seals in totally ironless structures. approach is based on exact calculation magnetic field components created by ring permanent magnets whose polarizations are either radial or axial. We assume that ferromagnetic particles saturated. Moreover, (neodymium iron boron) used considered applications create which much higher than so latter neglected. Nevertheless, static behavior seal depends both produced saturation magnetization particles. Furthermore, accurate knowledge as well inside very useful design devices using seals. It emphasized here our structures completely thus, there no iron-base piston these Then, this makes review main For each structure, determined.