Dynamic analysis of trawl doors applied in bottom trawls to catch shrimp

Abstract

This work deals with the dynamic analysis of a new design of trawl doors. The model is constrained to steady towing conditions with velocity constant, flat seabed and gear symmetry. The Ordinary Differential Equations (ODE) of the system includes the effects of the warp and the ropes in terms of external forces. In the mathematical model the influences of the hydrodynamic forces over the trawl doors are considers. This paper is mainly focus in show preliminary results of the mathematical model of a new design of trawl doors used to catch shrimp in the Mexican littoral by bottom trawls system. This result will be used in the future to validate the numerical model of the system with experimental results using a prototype of trawl doors designed in the laboratory of the institute.