Analysis of Yarn Tension in Air-Jet Filling Insertion

Adanur, Sabit; Mohamed, Mansour H.

doi:10.1177/004051759106100503

Cited by 21 publications

(19 citation statements)

References 7 publications

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“…Uno 1 derived the equations of motion of air jet weft insertion utilizing empirical relations to determine the air flow velocity and the air friction coefficient. Adanur and Mohamed 2,3 derived theoretical models for yarn motion and tension in drum and loop-storage systems for air jet insertion. They presented a numerical technique to solve the equations of motion for the yarn and to calculate the resulting yarn velocity.…”

mentioning

confidence: 99%

Simulation of air flow–yarn interaction inside the main nozzle of an air jet loom

Osman

Malengier

Meulemeester

et al. 2017

Textile Research Journal

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The main nozzle of an air jet loom plays an essential role in the weft insertion process. This role involves sucking the weft yarn from the prewinder and launching it into the reed. Simulating the dynamic behavior of the weft yarn inside the main nozzle involves fluid–structure interaction (FSI). In this work, one-way and two-way FSI simulations of air flow–yarn interaction inside a main nozzle have been performed. A three-dimensional model of the flexible weft yarn, consisting of a chain of line segments, and a two-dimensional axisymmetric model of the supersonic flow have been developed and coupled to perform these simulations. The results of the simulations are compared quantitatively and qualitatively with experimental results. Good agreement has been found between the results of the two-way FSI simulations and the experiment. The coupled fluid and structure models provide an effective numerical tool to optimize the geometry of the main nozzle based on the calculated motion and speed of the weft yarn.

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mentioning

confidence: 99%

Simulation of air flow–yarn interaction inside the main nozzle of an air jet loom

Osman

Malengier

Meulemeester

et al. 2017

Textile Research Journal

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“…Celik et al 4 incorporated the flow from the relay nozzles into an analogous model by using time and place factors for the different forces acting on the yarn. Nosraty et al 5 used the model from Adanur and Mohamed 3 as a basis for their model to analyse the influence of yarn count and air supply pressure on weft yarn tension. Szabó et al 6 established a similar methodology for confusor guide systems.…”

Section: Several Models and Simulation Methodologies Aimed At Modellimentioning

confidence: 99%

“…2 opted for a very similar approach for yarn insertion through a (slotted) tube. Adanur and Mohamed 3 also adopted these methods to calculate the yarn tension during yarn unwinding from drum and loop storage systems. Celik et al.…”

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confidence: 99%

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Three-dimensional fluid-structure interaction simulations of a yarn subjected to the main nozzle flow of an air-jet weaving loom using a Chimera technique

Delcour

Peeters

Degroote

2019

Textile Research Journal

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In air-jet weaving looms, the main nozzle pulls the yarn from the prewinder by means of a high velocity air flow. The flexible yarn is excited by the flow and exhibits high amplitude oscillations. The motion of the yarn is important for the reliability and the attainable speed of the insertion. Fluid-structure interaction simulations calculate the interaction between the air flow and the yarn motion and could provide additional insight into yarn behavior. However, the use of an arbitrary Lagrangian–Eulerian approach for the deforming fluid domain around a flexible yarn typically results in severe mesh degradation, vastly reducing the accuracy of the calculations or limiting the physical time that can be simulated. In this research, the feasibility of using a Chimera technique to simulate the motion of a yarn interacting with the air flow from a main nozzle was investigated. This methodology combines a fixed background grid with a moving component grid deforming along with the yarn. The component grid is, however, not constrained by the boundaries of the flow domain allowing for large deformations with limited mesh degradation. Two separate cases were investigated. In the first case, the yarn was considered to be clamped at the main nozzle inlet. For the second case, the yarn was allowed to move axially as the main nozzle pulled it from a drum storage system.

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“…It increased with time (distance constant) and decreased with distance from the nozzle. Adanur and Mohamed [6] also analyzed yarn tension during air-jet filling insertion both experimentally and numerically for drum and loop storage systems. The model for drum storage showed that the yarn tension depended on the frictional force between the drum surface and the yarn, the mass linear density of the yarn, and the unwinding speed.…”

Section: Air Jet Weft Insertionmentioning

confidence: 99%

Weaving Machinery and Its Related Technologies

Kinari

2007

J. Text. Eng.

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Published research work concerning weaving machinery and its related technologies in the period between 1990 and 2005 are surveyed in this review. Air-jet looms have been introduced to a lot of weaving mills widely and rapidly in spite of their uncertainness of weft running. Thus researchers concerned with weaving machines have paid a great interest in air-jet weft insertion technology. Developments of measuring devices, photographic technology, control devices, and personal computers brought active research work in the fields of the air jet weft insertion: especially spreads of personal computers have facilitated to solve almost all types of equations of motion. In consequence, numerical simulations for weaving machines have been easily performed including weft insertion, warp tension, mechanism design for loom and so on.

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Analysis of Yarn Tension in Air-Jet Filling Insertion

Cited by 21 publications

References 7 publications

Simulation of air flow–yarn interaction inside the main nozzle of an air jet loom

Simulation of air flow–yarn interaction inside the main nozzle of an air jet loom

Three-dimensional fluid-structure interaction simulations of a yarn subjected to the main nozzle flow of an air-jet weaving loom using a Chimera technique

Weaving Machinery and Its Related Technologies

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