UNDERSTANDING FOR STRONG WIND CHARACTERISTICS IN BOSO PENINSULA WITH T1915 BY USING NUMERICAL WEATHER AND WIND MODELS

DOI

Bibliographic Information

Other Title
  • 数値気象・気流モデルによる令和元年台風15号房総半島での強風特性評価

Abstract

We numerically examined surface-wind characteristics in Boso peninsula with T1915, especially paying attention to the interaction between the activation of strong winds near the maximum wind velocity radius of typhoon and the locally wind enhancement due to complex terrains. Time-series of surface winds obtained by a numerical weather prediction and a typhoon models showed that there existed strong wind area just outside the core of typhoon along the west coast in Boso peninsula; the wind speed and direction in the upper atmospheric boundary layer were about 60 m/s and south, respectively. The trajectory analysis on spatial distributions of time-averaged wind fields obtained by a wind-engineering model (CFD model) with a RANS model for the west coast in Boso peninsula indicated that the strong wind spots over the complex terrain were generated by an upslope and also upward undulations. Large-eddy-simulations for the strong wind spots gave the large turbulence intensities and peak factors compared with those observed above flat terrains.

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Keywords

Details 詳細情報について

  • CRID
    1390288148341304832
  • NII Article ID
    130008043927
  • DOI
    10.14887/windengresearch.26.0_9
  • ISSN
    24355429
    24354384
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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