Numerical Analysis Of Flowing For High Polymer In Spinning Pack And Optimization The Structural Of It

After several decades of rapid development, chemical fibre industry has been one of the most important parts of national economy. But still, the varieties of chemical fibre product and the quality of fibre are not good enough compared with developed countries such as Japan and America. The spinning pack is one of the key facility in the process of spinning, and the performance of it directly affects the spinnability and quality of fibre.This paper firstly introduce the general situation of spinning pack, and based on hydrodynamics, build the mathematics model.And then, this paper assemble every main module in this pack according to a certain situation. Analyze the floating situation of the melt in spinning pack, by using special CFD software-Fluent for computer numerical simulation which reflect the floating of the melt in the pack. And, analyze the floating of melt in given condition in both ideal state and non-ideal state, and get the degree of irregularity of the speed at which the melt float through spinneret in different condition reflecting the fiber irregularity in different condition;At the same time, this paper also analyze the melt's stay time in pack, so can also provide some theoretical foundation for practical manufacture and experiment.At present, the design of the spinning pack in our country is mostly limited by experience. The meaning of the research in this paper is that it break the routine of designing by using the powerful CAD/CAE function of modern computer and realize simulating the floating of melt in pack by computer. In this way, manufacturing cost can be reduced and the efficiency can be improved too. The design of spinning pack can be promoted to anew level.