Numerical modeling of the air permeability of knitted fabric using computational fluid dynamics (CFD) method

作者：Dehkordi Seyedeh Sarah Hosseini; Ghane Mohammad; Abdellahi Sayyed Behzad^*; Soultanzadeh Milad Babadi

来源：Fibers and Polymers, 2017, 18(9): 1804-1809.

DOI：10.1007/s12221-017-7238-0

• Knitted fabrics
• Air permeability
• Numerical modeling
• Computational fluid dynamics (CFD)
• Knit loop geometry

In this study computational fluid dynamics (CFD) method was applied to simulate air permeability of knitted fabrics with rib and interlock structures. For this purpose, two types of knitted fabrics with rib 1x1 and interlock structures were produced with three different loop densities. Air permeability test was carried out on all samples. A unit cell of each sample was created using CATIA software by Vassiliadis model which considers the real shape of knit loop in three dimensions space. CFD analysis was then executed on all samples by Fluent software. Two turbulent models, k-epsilon and k-omega, were used for CFD analysis. The numerical results showed good agreement with the experimental results. It can be concluded that CFD model is an efficient model to predict air permeability of knitted fabric by using unit cell of knitted fabric structure. Using this procedure can reduce the operation size and consequently the solution time is considerably reduced.

• 出版日期2017-9