Using multiple-resolution data in an adaptive simulation for typhoon-induced waves in northwest Pacific Ocean

Shih Chun Hsiao, Tien Hung Hou, Tai Wen Hsu, Chia Cheng Tsai

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Due to the very large expanse of warm water in the northwest Pacific Ocean, typhoons are stronger and occur more frequently than hurricanes. In addition, there is usually a lack of unified high-resolution data of wind fields and bathymetry since multiple countries can be influenced by a typhoon. Therefore, we use multiple-resolution data in an adaptive simulation for typhoon-induced waves. Higher-resolution data are obtained from the government of Taiwan and are used for the area around Taiwan. In the other area, lower resolution data are adopted from the National Oceanic and Atmospheric Administration of the United States. An adaption criterion is implemented such that the highest resolution numerical grids move with the typhoon in a large-scale simulation. The numerical results obtained by the large-scale simulation with multiple-resolution wind fields are improved over those obtained by a smaller scale simulation with the higher resolution wind field at buoys near Taiwan. In addition, the large-scale simulation also provides results for buoys where the higher resolution wind field is not available. In addition, a speedup of fourfolds by the dynamic adaption model over the partially uniform grid one is demonstrated.

Original languageEnglish
Pages (from-to)284-297
Number of pages14
JournalProceedings of the Institution of Mechanical Engineers Part M: Journal of Engineering for the Maritime Environment
Volume234
Issue number1
DOIs
Publication statusPublished - 2020 Feb 1

All Science Journal Classification (ASJC) codes

  • Ocean Engineering
  • Mechanical Engineering

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