Computational modeling and experimental validation of the air permeability of woven structures on the basis of simulation of jet systems

• Published in: Textile research journal Vol. 83; no. 18; pp. 1887 - 1895
• Main Authors: Angelova, Radostina A, Stankov, Peter, Simova, Iskra, Kyosov, Miroslav
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.11.2013; Sage Publications Ltd
• Subjects: 3-D technology; Air; Computer simulation; Fluid dynamics; Nonwoven fabrics; Permeability; Studies; air permeability; jet systems; woven structures; computational fluid dynamics; numerical simulation
• ISSN: 0040-5175; 1746-7748
• DOI: 10.1177/0040517513481869

The paper presents computational fluid dynamics-based numerical simulation of the through-thickness air permeability of woven structures, applying the theory of jet systems. The flow through the interstices between the warp and weft threads is modeled as an “in-corridor”-ordered jet system, formed by nine jets, issuing from nine pores of the woven structure. Fifteen cases were simulated and three different turbulence models were applied in the simulation: k-ɛ, k-ω and Reynolds stress model. The five simulated woven structures were manufactured and their air permeability was measured experimentally. The performed validation of the numerical results with the experimental values of the air permeability showed very good correlation with the experimental results. The analysis and the verification showed that the method can be applied for further investigation not only of the woven fabrics’ air permeability, but also for investigation of the flow after a textile barrier of a woven type.