Modeling of net for calculation method of dynamic fishing net shape

Abstract

For the numerical calculation, the fishing net is modeled as a group of lumped point masses interconnected with springs without mass. The numerical calculation of the dynamic behavior of a net in steady flow can provide good results when using the formula presented. The magnitude of applied tension force to the mesh bars can be observed as the change in the colors of the mesh bars. To observe the net shape qualitatively, it is sufficient to set the number of calculation points equal to the number of knots of fishing net. However, when the tension forces of the mesh bars are estimated, it is necessary to carefully obtain the appropriate coefficients of fluid dynamic force and also to set point masses over the net.