Journal of Scientific Computing

, Volume 52, Issue 2, pp 468–497

Performance of the Unstructured-Mesh, SWAN+ADCIRC Model in Computing Hurricane Waves and Surge

  • J. C. Dietrich
  • S. Tanaka
  • J. J. Westerink
  • C. N. Dawson
  • R. A. LuettichJr.
  • M. Zijlema
  • L. H. Holthuijsen
  • J. M. Smith
  • L. G. Westerink
  • H. J. Westerink
Article

DOI: 10.1007/s10915-011-9555-6

Cite this article as:
Dietrich, J.C., Tanaka, S., Westerink, J.J. et al. J Sci Comput (2012) 52: 468. doi:10.1007/s10915-011-9555-6

Abstract

Coupling wave and circulation models is vital in order to define shelf, nearshore and inland hydrodynamics during a hurricane. The intricacies of the inland floodplain domain, level of required mesh resolution and physics make these complex computations very cycle-intensive. Nonetheless, fast wall-clock times are important, especially when forecasting an incoming hurricane.

We examine the performance of the unstructured-mesh, SWAN+ADCIRC wave and circulation model applied to a high-resolution, 5M-vertex, finite-element SL16 mesh of the Gulf of Mexico and Louisiana. This multi-process, multi-scale modeling system has been integrated by utilizing inter-model communication that is intra-core. The modeling system is validated through hindcasts of Hurricanes Katrina and Rita (2005), Gustav and Ike (2008) and comprehensive comparisons to wave and water level measurements throughout the region. The performance is tested on a variety of platforms, via the examination of output file requirements and management, and the establishment of wall-clock times and scalability using up to 9,216 cores. Hindcasts of waves and storm surge can be computed efficiently, by solving for as many as 2.3⋅1012 unknowns per day of simulation, in as little as 10 minutes of wall-clock time.

Keywords

Hurricane wavesStorm surgeUnstructured meshes

Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • J. C. Dietrich
    • 1
    • 2
  • S. Tanaka
    • 1
  • J. J. Westerink
    • 1
  • C. N. Dawson
    • 2
  • R. A. LuettichJr.
    • 3
  • M. Zijlema
    • 4
  • L. H. Holthuijsen
    • 4
  • J. M. Smith
    • 5
  • L. G. Westerink
    • 1
  • H. J. Westerink
    • 1
  1. 1.Department of Civil Engineering and Geological SciencesUniversity of Notre DameNotre DameUSA
  2. 2.Institute for Computational Engineering and SciencesUniversity of Texas at AustinAustinUSA
  3. 3.Institute of Marine SciencesUniversity of North Carolina at Chapel HillChapel HillUSA
  4. 4.Faculty of Civil Engineering and GeosciencesTechnical University at DelftDelftThe Netherlands
  5. 5.Coastal Hydraulics LaboratoryU.S. Army Corps of EngineersVicksburgUSA