Numerical simulation of air flow field in suction system of JWF-A drawing frame

To solve the existing problems of the suction system of the JWF-A drawing frame during production,numerical simulation method was used to analyze the influence of air flow field,pressure field distribution,and the input air of each inlet on the suction system.Four improving schemes were considered based on the configuration parameters of the suction system,to investigate the influence of the position and size of secondary air inlet,wind pipe arrangement and inlet jaw opening on the flow field,pressure field and air rate.Unstructured grid and finite volume method were applied for region and governing equation discreteness,and standardk-emodel was used as turbulent model.The results of calculation and measurement showed that the air rate of the suction system is not enough.When the structure of air inlet pipe remains fixed,modifications of position and size of secondary air inlet and inlet jaw opening have little effect on the improvement of its performance;the scheme here suggested for improving wind pipe arrangement could provide enough air flow rate compared to the original scheme,and meet the producing need.