Numerical simulation on airflow field in complete condensing spinning system using finit element method

The numerical simulation of three-dimensional flow field in the condensing zone for compact spinning with groovy drum was obtained by using FLOTRAN CFD module in ANSYS. The flow field distribution of the condensing zone was given,and the compacting principle of compact spinning with groovy drum was explained. And then,in combination with cotton yarn experiments of ring spinning and compact spinning with groovy drum,the influence of the flow field distribution of compact spinning with groovy drum on cotton yarn qualities was analyzed. The results show that compact spinning with groovy drum is benefit for improving yarn evenness and strength,while retaining beneficial hairiness while reducing yarn harmful hairiness.