Electromagnetic Force To Control The Airfoil The Flow Around A Numerical Study

This project regards as a part of the domain of electromagnetic fluid mechanics. The controlling effects of flow past an airfoil with electromagnetic body forces had been investigated numerically. The effects of different attack angle, different Reynolds number, and different electromagnetic force magnitude on the flow wake and the boundary layer structure were taken into account. The investigation provides a foundation theory for oscillation absorption, vortex suppression and drag reduce by electromagnetic force.In this paper, the two-dimensional, incompressible and dimensionless Navier-Stokes equations were solved to describe the airfoil wake covered with electro-magnetic actuators. The base computational results were then validated by the experimental results. Further, the systematic numerical simulations were performed to examine the effects of the attack angle, Reynolds number, and the electromagnetic force. The computational solutions, including the distributions of vorticity and velocity, drag force and lift force, were obtained.Above results were analyzed and discussed, and were compared with experimental results. The conclusions obtained are as follows:The electromagnetic body forces, which caused by the electromagnetic field and localized around on the airfoil surface, can obviously improve the boundary layer structure and suppress the boundary layer separation. Furthermore, the electromagnetic force provides with the obvious effects for increasing the lift of the airfoil. However, the control effect of electromagnetic force is different with different attach angle, different Re and different electromagnetic force.