Research On Simulation And Modeling Of Corrugated Plate Steam-water Separator

Steam-water separator is an important part of nuclear power systerm.Steam-water separator is used for dehumidification of wet steam generated by steam generators to increase the safety and economy of turbin system,in case the turbine blade erosion made by excessive humidity.As a kind of steam-water separator,the separation machanism of corrugated plate steam-water separator decides this kind of separator to steam-liquid separate by the difference between density,inertia force and adhesive force of steam and drops.In the whole process of steam-water separation,there are a lot of factors affect the separation efficiency,for example,structure parameters of corrugated plate,drops diameter from inlet,speed,density and so on.In this paper,a kind of steam-water separator is taken as study object,CFD numerical simulation technique is used.Based on the structure parameters of the study object,modeling software AUTOCAD is used to simulate construction,ICEM is used to generating mesh,Fluent is used to calculate by suitable mathematical model.Meantime,the study of the influence between Saffman lift force,virtual mass force,pressure gradient force,stochastic collision model,unsteady particle tracking model and separator performance is provided in this paper,based on the study,mathematical model is revised.Using discrete phase model,the droplets and air in corrugated steam-water separator are considered separately,firstly,air-phase flow field is analyzed,secondly,control variate method is used to quantify the influence between plates distance,ruffled number,angle,drop diameter,airflow velocity and steam-water separator performance.