| In the technology that the steel slag is poured by water, resulting in a large number of dust and water vapor, which is a big threaten to the workers'working environment, and so far have not effective solution. This paper's aim is to develop new application of water curtain,which is formed above the slag to cooling and covering the dust and water vapor,which is to solve practical problems. Numerical simulation and test method are used in this paper, researches are the following:(1)Using the mathematical method of analysis the forming mechanism of water curtain. Expressing the relationship between the internal parameters of water curtain nozzle through the mathematical method. The preliminary design of water curtain nozzle is according to the field work condition.(2)Establishing simulation mode,then divid mesh,model assumption,install the border condition and iterative computation of two conditions in steady state and unsteady state at last.(3)Using Fluent software which provide for the VOF model numerical simulate the various structure parameters of spray nozzle in steady-state flow field, and analysis the iMPact of nozzle's structure parameters to the spray angle by simulation, as well as the relation between the pressure and spray angle. Numerical simulation results show that there are best match between parameters to make the spray angle is optimum.(4)Using Fluent software which provide for the VOF model numerical simulate the spray nozzle in turbulent flow field. Through simulation reach the volume distribution at different moments of the gas-liquid and the dynamic formation of the water curtain. The results show that the design's correctness of water curtain nozzle and feasibility of the function of water curtain.(5)The consistency of numerical simulation results and test results shows that the feasibility and superiority of the numerical simulation. The problem of cost is solved and provides new path for the design a better efflux performance of nozzle water curtain.
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