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Numerical Simulation of Ice Action to a Lighthouse

[+] Author Affiliations
Arne Gürtner

StatoilHydro, Trondheim, Norway

Morten Bjerkås

Reinertsen AS, Trondheim, Norway

Walter Kühnlein

Hamburg Ship Model Basin; Sea2Ice, Hamburg, Germany

Peter Jochmann

Hamburg Ship Model Basin, Hamburg, Germany

Ibrahim Konuk

Norwegian University of Science and Technology, Trondheim, Norway

Paper No. OMAE2009-80164, pp. 175-183; 9 pages
doi:10.1115/OMAE2009-80164
From:
  • ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 5: Polar and Arctic Sciences and Technology; CFD and VIV
  • Honolulu, Hawaii, USA, May 31–June 5, 2009
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4345-1 | eISBN: 978-0-7918-3844-0
  • Copyright © 2009 by ASME

abstract

Ice actions to the Norströmsgrund lighthouse are simulated by means of the computational cohesive element model. The numerical model is developed in the framework of finite elements. Fracture of the ice sheet is accounted for by the cohesive elements placed at internal finite element mesh boundaries in order to track traction versus separation. One single ice event on the Norströmsgrund lighthouse is selected for which the ice loads as well as outer boundary conditions are recorded. This event serves as a basis for comparison to the computational method presented in this paper. The simulation results indicate that the proposed numerical method captures many of the qualitative observation as well as quantitatively derives comparable global ice loads to the lighthouse to those of the selected ice event. Future analysis should include additional validation to variations in ice thickness and drift speed.

Copyright © 2009 by ASME

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