Fully numerical analysis for effects of cooling water flow rate and plate running speed on steel plate cooling in very high temperature region

The steel plate cooling process in hot rolling work has a variety of parameters influencing the cooling aspect of the process and the mechanical properties of products; i.e. the cooling water flow rate, the plate running speed, the cooling water temperature, the injection method of cooling water and so on. The present study deals with the cooling water flow rate and the plate running speed as vital parameters in the cooling process. The process is simulated by a fully numerical approach for a cooling type of impinging water jet on the moving plate. The previous achievement by Park¹⁾ of numerical analysis for the cooling process including the free surface capturing, the numerical modeling of boiling heat transfer, and the treatment of the moving plate is successfully adopted in the present study. The residual water height, the impinging pressure, the residual water shape, and the cooling history including the average heat flux are suggested for various cooling water flow rates and plate running speeds. The thickness distributions of the vapor film layer on the running plate are graphically presented too.