Computational optimization approach to design a water-jet nozzle for a water-jet loom using the design of experiment method

A water-jet nozzle is widely used on a water-jet loom to carry thread from one side of the loom to the other. The nozzle performance is important for the loom design and is measured in terms of the water drag force. A computational approach is proposed to design and optimize a water-jet nozzle using the design of experiment (DOE) method. Computations were carried by solving the incompressible Navier-Stokes equations with the standard k-epsilon turbulence model. ANSYS Fluent software was used to solve the fluid flow with Minitab software, which was used for optimization of the geometric parameters. The computational results show that the optimized nozzle has better performance than the original nozzle. The computational optimization approach was experimentally confirmed to be useful in designing a water-jet nozzle for water-jet looms.