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Iteration Coupling Simulation of Random Waves and Wave-Induced Currents

Author

Listed:
  • Jinhai Zheng
  • Tianwen Wang
  • Gang Wang
  • Chenming Zhang
  • Chi Zhang

Abstract

A two-way coupling algorithm for wave-current interaction is developed and implemented into a nearshore circulation model to investigate the effects of fully wave-current interaction on irregular wave transformation over an elliptic shoal. The wave field is simulated by a spectral wave model WABED, and the wave-induced current is solved by a quasi-three-dimensional model WINCM. The surface roller effects are represented in the formulation of surface stress, and the roller characteristics are solved by a roller evolution model. The proposed two-way coupling algorithm can describe both the generation of wave-induced current and the current-induced wave transformation, which is more physically reasonable than the one-way approaches. The model test with a laboratory experiment shows that wave-induced currents have an important influence on the wave transformation, for example, the wave energy defocusing due to the strong jet-like current along the centerline of the shoal. It is revealed that the accuracy of simulated wave field can be significantly improved by taking into account the two-way wave-current interaction.

Suggested Citation

  • Jinhai Zheng & Tianwen Wang & Gang Wang & Chenming Zhang & Chi Zhang, 2012. "Iteration Coupling Simulation of Random Waves and Wave-Induced Currents," Journal of Applied Mathematics, Hindawi, vol. 2012, pages 1-13, October.
    • Handle: RePEc:hin:jnljam:205376
    DOI: 10.1155/2012/205376
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