EXPERIMENTS AND PREDICTION OF A COLD AIR FLOW WHICH CAUSES SNOW CLOUDS IN ISHIKARI BAY

• Nakayama Keisuke

  JAPAN SOCIETY OF CIVIL ENGINEERS

• Hasegawa Kazuyoshi

  JAPAN SOCIETY OF CIVIL ENGINEERS

• Fuzita Mutsuhiro

  JAPAN SOCIETY OF CIVIL ENGINEERS

Bibliographic Information

Other Title

• 降雪をともなう冷気流に関する実験及び数値計算予測
• コウセツ オ トモナウ レイキリュウ ニ カンスル ジッケン オヨビ スウチ

Abstract

In winter seasons, snow clouds are often caused on the tip of a cold air flow by an ascending wind around Ishikari Bay. The extended distance of the cold air flow over Ishikari Bay is determined by the interfacial friction between the cold air flow and the upper wind. In order to estimate the coefficient of the interfacial friction, density current experiments of the cold air flow were carried out using the difference of the temperature, and its coefficient was derived on Re≤2×10⁵ and Re>2×10⁵, respectively. Using this coeffient and proposing the cold air flow model, we can reproduce the extended cold air flow on Feb. 18, 1996 which snow clouds occured on the tip of the cold air flow.

Journal

• Doboku Gakkai Ronbunshu

  Doboku Gakkai Ronbunshu 1998 (607), 1-17, 1998-11-21

  Japan Society of Civil Engineers

Keywords

• cold air flow
• coefficient of interfacial friction
• turbulent heat flux
• Monin-Obukhov length
• cold air flow model

Details

• CRID: 1390282680286557312
• NII Article ID: 130003983107
• NII Article ID: 10003878288
• NII Article ID: 10003276308
• NII Book ID: AN10014020
• DOI: 10.2208/jscej.1998.607_1
• ISSN: 18827187
• ISSN: 02897806
• NDL BIB ID: 4613394
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4613394
• Web Site: https://www.jstage.jst.go.jp/article/jscej1984/1998/607/1998_607_1/_pdf
• Data Source:
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  • NDL
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  • CiNii Articles
• Abstract License Flag: Disallowed