Prediction of Air Permeability of Knitted Fabric by Using Computational Method

Siddiqui, Muhammad Owais Raza; Ali, Muhammad; Zubair, Muhammad; Sun, Danmei

doi:10.32710/tekstilvekonfeksiyon.482877

Cited by 4 publications

(2 citation statements)

References 21 publications

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“…Because the sample FN-7 has the lowest fabric mass per unit area among all fabric samples. This shows the inverse relationship between air permeability and fabric mass per unit area parameters [15]. Nevertheless, the air permeability of the sample FN-5 higher than the sample FN-6, although the fabric mass per unit area is the highest.…”

Section: Air Permeability and Fabric Mass Per Unit Areamentioning

confidence: 79%

Determining the Appropriate Fabric Type for Use in the Production of Cosmetic Textiles by Performance Tests

Yılmaz¹,

Öndoğan²

2021

NWSA

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Section: Air Permeability and Fabric Mass Per Unit Areamentioning

confidence: 79%

Determining the Appropriate Fabric Type for Use in the Production of Cosmetic Textiles by Performance Tests

Yılmaz¹,

Öndoğan²

2021

NWSA

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“…For example, Liu et al used the ALE method to simulate the airdrop process of plane circular parachute, the results indicated that dynamic load decrease while the steady descent speed increase with the increase of canopy permeability. 17 The above FSI studies on permeable parachute are all based on the Ergun equation, the fabric permeability coefficients are corrected with the data of canopy fabric permeability tests, and could not be obtained by fabric structure parameters directly. Additionally, the permeability model used in above FSI research are all only applicable in incompressible flow.…”

Section: Introductionmentioning

confidence: 99%

Influence of fabric permeability on breathing phenomenon of supersonic parachute

Nie

et al. 2023

Journal of Industrial Textiles

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In order to investigate the dynamics and vortex shedding of flexible supersonic canopies, a compressible permeability model combined with fabric structure parameters is proposed, and the periodic oscillation of the supersonic parachute which is referred to as breathing phenomenon is simulated based on the Arbitrary Langrangian Eulerian (ALE) method. The calculated results by new permeability model are consistent with the experimental results. The underlying mechanism of canopy breathing motion is then investigated. Moreover, the influence of canopy permeability on breathing phenomenon of supersonic parachute is analyzed. The results indicate that the periodic growth and shedding of the canopy vortex causes the variation of the pressure differential, which finally lead to the periodic oscillation of the canopy. With the increase of fabric permeability, the vortex rolled up from the canopy skirt move backward and become more slender. The influence of vortex shedding on canopy breathing motion weakened. Those lead to the decrease of the average value of canopy projected area and parachute dynamic load. So are the oscillation amplitude and frequency. The parachute deceleration performance decreases while the parachute swing angle decreases as the canopy permeability increases.

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Physics-based modeling of the effective gas transport properties of single jersey knitted fabrics based on images

Pauly,

Maier,

Nieken

et al. 2024

Textile Research Journal

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In many processes and applications, the performance of textiles relies heavily on fluid transport; for example, the in-plane distribution of water and the through-plane permeation of water vapor and air. Prediction of knitted fabrics’ effective transport characteristics can enhance development workflows and bring them to new applications. Effective transport parameters that are particularly important are the permeability and diffusive mass transfer. Usually, experiments are used to determine these parameters. It is desirable to conduct a thorough investigation into how yarn structure and knitting gauge influence these properties to tailor knitted fabrics for a particular application. Our contribution in this context describes a consistent workflow to forecast the effective mass transfer characteristics of single jersey fabrics. Single jersey fabrics have been chosen for they are the simplest patterning, and are widely used in body-near worn garments. The proposed approach involves visualizing fabric samples with a light microscope, and subsequently determining relevant geometric parameters through automated image processing algorithms. With these parameters in hand, a representative elementary volume of the fabric is constructed. The yarn is modeled as an effective medium to reduce calculation time. The representative elementary volume is then used for numerical predictions of air permeability and the diffusive water vapor transport. The predicted through-plane gas transport properties are compared with experimental data to validate the approach. Six different single jersey polyester fabrics were analyzed, with different yarn structures and machine gauges. The comparison shows a good agreement between simulated and measured transport properties.

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Prediction of Air Permeability of Knitted Fabric by Using Computational Method

Cited by 4 publications

References 21 publications

Determining the Appropriate Fabric Type for Use in the Production of Cosmetic Textiles by Performance Tests

Determining the Appropriate Fabric Type for Use in the Production of Cosmetic Textiles by Performance Tests

Influence of fabric permeability on breathing phenomenon of supersonic parachute

Physics-based modeling of the effective gas transport properties of single jersey knitted fabrics based on images

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