Numerical Simulation And Experimental Research Of Wire Mesh Filter

Wire-mesh filter is an important portion of marine air-intake filter. Pressure drop and filter efficiency are its two main capability parameters. As to pressure drop, it was always needed to measure through experiments at early days whether in domestic or overseas. This always used mass of manpower and material resources, and experimental periods were also too long. As to filter efficiency, it is influenced by many qualifications such as gas velocity and gas liquid loading. Designers must balance the two parameters by client s requirement.This paper carried on further research to pressure drop and filter efficiency through theoretical calculation , numerical simulation and experiment. It has finished three aspects of work as to actual condition:1.Brought out a hypothesis based on predecessor's theoretics and imported a reduced method of wire mesh. Deduced an expression of wire mesh filter efficiency to entrance droplets supposing droplets have not been reentrained and wire mesh filter works under flood point. Educed a method of computing maximum gas velocity through analyzing strength suffered by droplet based on predecessor s experiential formula.2.Attempted to establish unreduced three-dimensional model of wire mesh filter, and simulated it on single and two phase condition. Analysised the result of numerical simulation and researched further of influence for the change of wire diameter, distance between wire mesh layers to pressure drop and entrance droplet diameter, gas velocity to filter efficiency. Amended foregoing theoretical formula after analyzing the characteristic of flow field.