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Fluid-structure interactions: Slender structures and axial flow (Volume 2). The dynamic study of the weft insertion of air jet weaving machines. Simulation analysis of weft yarn motion in single nozzle air-jet loom to study the effective parameters. A mathematical model for numerical simulation of weft insertion on air-jet weaving machine. Analysis of yarn tension in air-jet filling insertion. Mechanics of a single nozzle air-jet filling insertion system, part III: Yarn insertion through tubes. A Study on air-jet loom with substreams added, part 1: Deriving the equation of motion for weft. For the second case, the yarn was allowed to move axially as the main nozzle pulled it from a drum storage system.

In the first case, the yarn was considered to be clamped at the main nozzle inlet. The component grid is, however, not constrained by the boundaries of the flow domain allowing for large deformations with limited mesh degradation. This methodology combines a fixed background grid with a moving component grid deforming along with the yarn. 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. However, the use of an arbitrary LagrangianвЂ“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. Fluid-structure interaction simulations calculate the interaction between the air flow and the yarn motion and could provide additional insight into yarn behavior. The motion of the yarn is important for the reliability and the attainable speed of the insertion. The flexible yarn is excited by the flow and exhibits high amplitude oscillations. In air-jet weaving looms, the main nozzle pulls the yarn from the prewinder by means of a high velocity air flow.

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