Sökning: "Trawl door"

Hittade 2 uppsatser innehållade orden Trawl door.

1. 1. Hydrodynamic Shape Optimization of Trawl Doors with Three-Dimensional Computational Fluid Dynamics Models and Local Surrogates

   Master-uppsats, KTH/Kraft- och värmeteknologi

   Författare :Elvar Hermannsson; [2014]
   Nyckelord :Trawl door; hydrodynamics; optimization; SBO; CFD; local surrogates; response surfaces.;

   Sammanfattning : Rising fuel prices have been inflating the operating costs of the fishing industry. Trawl doors are used to hold the fishing net open during trawling operations, and they have a great influence on the fuel consumption of vessels. Improvements in the design of trawl doors could therefore contribute significantly to increased fuel efficiency. LÄS MER

3. 2. HYDRODYNAMIC OPTIMIZATION OF TWO-DIMENSIONAL MULTI-ELEMENT TRAWL-DOOR SHAPES USING LOCAL SURROGATE MODELS AND ANALYSIS OF CONTROLLABLE TRAWL-DOOR SHAPES

   Master-uppsats, KTH/Kraft- och värmeteknologi

   Författare :Magnus Juliusson; [2013]
   Nyckelord :;

   Sammanfattning : The study is motivated by the quest to lower the fuel consumption of trawlers and reduce green house gas emissions. Conventional trawl-doors contribute to about one third of the trawlers fuel consumption. Design and optimization of trawl-doors using computational models is vital in minimizing the fuel consumption. LÄS MER