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Sökning: L773:9789898565693

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  • Hermannsson, Elvar, et al. (författare)
  • Hydrodynamic design optimization of trawl-door shapes with local surrogate models
  • 2013
  • Ingår i: SIMULTECH 2013. - 9789898565693 ; , s. 751-756
  • Konferensbidrag (refereegranskat)abstract
    • Trawl-doors have a large influence on the fuel consumption of fishing vessels. Design and optimization of trawl-doors using computational models are a key factor in minimizing the fuel consumption. This paper presents an optimization algorithm for the shape design of trawl-door shapes using computational fluid dynamic (CFD) models. Accurate CFD models are computationally expensive. Therefore, the direct use of traditional optimization algorithms, which often require a large number of evaluations, may prohibitive. The proposed approach is iterative and uses low-order local response surface approximation models of the expensive CFD model, constructed in each iteration, to reduce the number of evaluations. The algorithm is applied to the design of a two-element trawl-door (slat and airfoil), involving four design variables controlling the angle of attack and the slat position and orientation. The results show that a satisfactory design can be obtained at the cost of a few iterations of the algorithm.
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