In this paper it is attempted to improve the performance of the gas–solid new design cyclones with imposing magnetic fields. First, Eulerian-Lagrangian method is used to model the flow and to track the solid particles within the new design cyclones. The Reynolds averaged Navier–Stokes equations with Reynolds stress turbulence model (RSM) are solved by use of the finite volume method based on the SIMPLE pressure correction algorithm in the computational domain. The velocity fluctuations are simulated using the Discrete Random Walk (DRW). Then, to investigate the possible influence of the magnetic field, horizontal and vertical distances of the magnetic source from the coordinate origin as influential parameters are investigated. Solid particles with three different diameters and with different materials including polystyrene, ferrous and nickel are used. Results show that applying a magnetic field can improve the collection efficiency for all different particles’ materials. Analysis of results proves that there is a strong correlation between cyclone performances. It is observed that the collection efficiency is very sensitive to vertical distance of the magnetic source from the origin. Moreover, providing higher efficiency without imposing pressure drop is the advantage of implication of a magnetic field.

在本文中，尝试通过施加磁场来改善气固新设计旋风分离器的性能。首先，使用欧拉-拉格朗日方法对流进行建模并跟踪新设计旋风分离器内的固体颗粒。通过在计算域中使用基于SIMPLE压力校正算法的有限体积方法，对具有雷诺应力湍流模型（RSM）的雷诺平均Navier-Stokes方程进行求解。使用离散随机游走（DRW）模拟速度波动。然后，为了研究磁场的可能影响，研究了磁源距坐标原点的水平和垂直距离作为影响参数。具有三种不同直径和不同材料（包括聚苯乙烯）的固体颗粒，使用亚铁和镍。结果表明，施加磁场可以提高所有不同粒子材料的收集效率。结果分析表明，旋风分离器性能之间有很强的相关性。可以看出，收集效率对磁源到原点的垂直距离非常敏感。此外，在不施加压力降的情况下提供更高的效率是施加磁场的优点。