Papers by Author: Yi Gang Luan

Abstract: In this article, computational fluid dynamics(CFD) method is used to predict the effect of blade numbers on the pressure drop of axial cyclone separators. A three-dimensional model is built to acquire the resistance of axial cyclone separators with different blade numbers. The flow field inside cyclone separators is calculated using 3D Reynolds-averaged Navier-Stokes equations. And turbulence model is used to simulate the Reynold stress. Also pressure drop of cyclone separators with different blade numbers is expressed as a function of different inlet velocities. At the same inlet velocity with increasing the blade numbers, pressure drops of cyclones reduce greatly. And changing the blade number of cyclone separator is an effective method to improve its resistance performance.

Abstract: CFD method is used to simulate characteristics of flow field inner a kind of wave-plate gas-liquid separator with drainage channels. The N-S equations closed with standard turbulence model is used. The resistance characteristic of separators with different vane clearances is acquired as function of inlet velocity and the flow fields are simulated numerically. In order to evaluate the simulation method, model experiment is carried on using wind-tunnel to obtain the resistance characteristic under the same operation condition. Good agreement is reached between numerical results and experimental data of pressure drop of the separator. The research can provide theoretic basis for the design and optimization of wave-plate gas-liquid separator in the future.

Abstract: In this article, computational fluid dynamics(CFD) method is used to predict the pressure drop of a wire mesh mist eliminator. A simplification method is used during the simulation process to solve the difficulty of model building during the simulation of the mist pad. A two-dimensional model is employed to acquire the resistance of mesh pad with different layer spacing. The flow field is calculated using 2D Reynolds-averaged Navier-Stokes equations. turbulence model is used to simulate the Reynold stress. And pressure drop of wire mesh mist eliminator is expressed as a function of broad ranges of inlet velocity. After CFD simulation, model experiment study is carried on using a small scale wind-tunnel. The pressure drop is gained to testify the numerical simulation result.