熔喷双槽形喷嘴气体射流流场研究

Study on the Flow Field of the Air Jet from Dual Slot Die in the Melt Blowing Process

从点涡的性质出发,研究了涡偶代替射流的可行性,推导了两射流合成的理论公式,并用实验测定数据验证了该公式的可靠性。该公式预测的纤维直径与经验公式的预测结果几乎完全相同。

The possibility of substituting jet with two circulations is studied according to the nature of circulation. The formula of the synthesis of two jets is developed. The reliability of this formula is confirmed by the experiment data cited from literature. The model prediction of fiber diameter using this formula is almost the same as that using the empirical formula put forward by Harpham and Shambaugh.