【Abstract】 According to the gas-dynamic theory,various air current parameters of the drawing system are tested with the use of Fluent,a fluid dynamic analysis software system.A simple method for measurement of the performance of drawing system is developed in terms of the comparing between the numerical results and the trial data.The basic theory is thus established for the study of the relationship between the various geometric and air flow parameters and the performance of drawing system.The theory can also be used for the design optimization of the system.更多还原