吹雪流の数値解析における雪の連行係数の評価法の提案

書誌事項

タイトル別名
  • Evaluation of snow entrainment coefficient based on the fluid dynamical analysis of snowdrift
  • フブキリュウ ノ スウチ カイセキ ニ オケル ユキ ノ レンコウ ケイスウ ノ ヒョウカホウ ノ テイアン

この論文をさがす

抄録

When performing the fluid dynamical analysis of snowdrift by using the equation of turbulent diffusion, it is essential to determine the boundary conditions of concentration at the bottom of the snowdrift. The concentration gradient and concentration flux are adopted as boundary conditions. The concept of snow entrainment coefficient is considered useful since it is expected to be a variable related to flow properties and snow particle properties. The κ-εturbulence model is applied as a dynamic model of the snowdrift, and the result is compared with the wind velocity profile and the snowdrift flux in the experiment by using a window tunnel. The diameter used to calculate Garcia's parameter Z is obtained by balancing the drag force and the gravitational and buoyant force of the snow particles. The diameter obtained by SPC is compared with that obtained by this method by examining the relationship between the sand and/or snow entrainment coefficient and Garcia's parameter Z.

収録刊行物

  • 雪氷

    雪氷 68 (4), 267-276, 2006

    公益社団法人 日本雪氷学会

被引用文献 (1)*注記

もっと見る

参考文献 (12)*注記

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ