Trawler-trawling gear interaction

Author

Giannotti, Julio G. ; Kowalski, T.

fYear

1975

fDate

22-25 Sept. 1975

Firstpage

496

Lastpage

501

Abstract

The paper presents a method for the simulation of the dynamic interaction between a trawler and its trawling gear. The main parameters affecting the interaction are the resistance forces acting on the gear and the trawler´s hull, and the thrust made available by the propulsion system of the trawler. Inputs to the simulation method are trawling gear geometry, hull geometry, engine and propeller characteristics, and trawling speed. The output is a set of interaction curves showing the variation of hull and gear resistance with trawling speed, and available thrust as a function of speed and propeller rpm. The resistance of the trawl is obtained from theoretical and experimental studies conducted previously by the authors. Trawler hull resistance is obtained by means of a regression technique. In addition to simulating the actual trawler-trawling gear interaction the method can be used to predict the effects of changes made to the system on overall efficiency.

Keywords

boats; gears; marine propulsion; dynamic interaction; engine; gear resistance; hull geometry; interaction curves; propeller characteristics; propulsion system; regression technique; trawler hull resistance; trawler-trawling gear interaction; trawling gear geometry; trawling speed; Engines; Gears; Geometry; Hydrodynamics; Investments; Marine animals; Predictive models; Propellers; Propulsion; Solid modeling;

fLanguage

English

Publisher

ieee

Conference_Titel

OCEAN 75 Conference

Conference_Location

San Diego, CA

Type

conf

DOI

10.1109/OCEANS.1975.1154152

Filename

1154152