Numerical Simulation of the Flow in Magnetic Fluid Rotary Shaft Seals
نویسندگان
چکیده
The hydrodynamical properties of the magnetic fluid in magnetic fluid seals are described by a coupled system of nonlinear partial differential equations in a three-dimensional domain with free boundaries. We propose a reduction of the three-dimensional model and describe the resulting two subproblems, the calculation of new boundaries for given flow and magnetic data, and the computation of the flow in a fixed domain, which have to be solved in an iterative manner. We consider in detail the finite element solving strategy for the flow part, which builds the main effort within the overall algorithm and show the results of a numerical test example.
منابع مشابه
Flow Seals Parameters Analysis For Rotors
The interaction of work fluid mechanics with that of the rotary system itself, basically composed of axes, bearings and rotors, is performed by inserting equivalent dynamic coefficients in the mathematical model of the rotor, the latter being obtained by the finite element method. In this paper, the dynamic coefficients of inertia, stiffness and damping of the flat seals analyzed here are evalu...
متن کاملNUMERICAL SIMULATION OF EFFECTS OF NON-IONIZED MASS INJECTION ON THE MHD FLOW IN A CIRCULAR CHANNEL
Control of a fluid velocity profile by injection and suction of non-ionized flow in presence of a uniform steady magnetic field has important technical applications. In this paper, the unsteady incompressible and viscous conducting fluid flow has been investigated in a circular channel. The channel wall has been assumed to be non-conducting and porous. It has been subjected to a uniform steady ...
متن کاملComputational fluid dynamics simulations for investigation of parameters affecting goaf gas distribution
It is necessary to obtain a fundamental understanding of the goaf gas flow patterns in longwall mine in order to develop optimum goaf gas drainage and spontaneous combustion (sponcom) management strategies. The best ventilation layout for a longwall underground mine should assist in goaf gas drainage and further reduce the risk of sponcom in the goaf. Further, in the longwall panel, regulators ...
متن کاملNumerical Simulation of Micropolar Flow in a Channel under Osciatory Pressure Gradient
We numerically investigate the pulsatile flow and heat transfer of a micropolar fluid through a Darcy-Forchhmeir porous channel in the presence of wall transpiration. We use the central difference approximations for the spatial derivatives, whereas the time integration has been performed by employing the three steps explicit Runge-Kutta method to obtain the numerical solution. It i...
متن کاملNumerical Simulation of Cavitation in Mixed Flow Pump
The purpose of this study is to investigate the performance and three-dimensional behavior of the flow in a mixed flow pump and the way cavitation phenomenon is affected by different parameters such as fluid temperature, pump speed and flow rate. Computational fluid dynamic software FLUENT 6.3 was utilized to simulate the whole flow field of the pump. RNG k-ε model combined with standard wall f...
متن کامل