住宅地による大気の運動量・熱量の変質過程

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タイトル別名
  • MOMENTUM AND HEAT TRANSFORMATION PROCESS OF AIR CURRENT OVER RESIDENTIAL AREA
  • ジュウタクチ ニ ヨル タイキ ノ ウンドウリョウ ネツリョウ ノ ヘンシツ カテイ

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The authors investigated momentum and heat transformation process over residential area by turbulence measurement. Velocity and temperature variation were measured at two measurement points, one of which was downstream side of open space, and the other was downstream side of urban canopy block. It was compared that the sensible heat flux and momentum flux calculated with eddy-correlation method. We verified urban canopy site's decreasing wind velocity, increasing turbulence and increasing sensible heat flux compared to open space site. The four-quadrant analysis showed that ejection was prompted relatively by natural convection and sweep was prompted by forced convection.

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