Experimental studies of the catamaran model

Abstract

This article discusses the hydrodynamics of the catamaran model. The catamaran model is based on the theory of multiphysical similarity. A full scale catamaran consists of two motorboats of the "Wyatboat-430" type, connected with a specially made deck. Boats "Wyatboat-430" are used for coastal fishing, as well as in inland waters, conducting scientific studies of aquatic life stocks in reservoirs of the Russian Federation. For the physical determination of the hydrodynamic resistance of full-scale motor boats "Wyatboat-430" and the catamaran itself, experimental studies have been conducted in the experimental pool of the Federal State Educational Institution "KSTU". The hydrodynamic resistance of a catamaran depends on many characteristics: shape of the hull, roughness of the hull surface, in particular the bottom of the boats, size of the boats, towing speed, distance between the boats (attachment), etc. During the physical experiment, the hydrodynamic resistance has been calculated based on the results of running a catamaran model in the experimental pool of KSTU. The catamaran models are made of fiberglass. Numerical experiments on the calculation of the hydrodynamics of "Wyatboat-430" motorboat have been performed using simulation modeling. A 3D model of the boat "Wyatboat-430" boat has been created to calculate the resistance, using a special Blender program. Calculation of the resistance of the catamaran 3D model has been performed in the Maxsurf Resistance program. This program calculates the approximate hydro-dynamic resistance. After the results obtained, the analysis, comparison and prediction of the hydrodynamic resistance of the catamaran model have been carried out.