Wind tunnel experiment on area-averaged transfer coefficient of non-uniform block with a salinity change method

盐度变化法非均匀块体面积平均传递系数风洞试验

• 批准号: 18560580
• 负责人: NARITA Ken-ichi
• 金额: $ 1.88万
• 依托单位: Nippon Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560580/
• 关键词: Heat island; Transfer coefficient; Urban canopy; Heat budget; Convective heat transfer coefficient; Wind tunnel experiment; Sensible heat flux; turbulence; 対流熱伝達; 都市キャノピィー

We investigated bulk scalar coefficient of the street in the three-dimensional canopy with various conditions of arrangement, plan area density, frontal area index, and variability of model height in a wind tunnel using salinity method. The results can be summarized as follows.(1) The relationships between bulk scalar coefficient and frontal area index of both staggered and normal arrayed canopy with uniform height shows different tendency. The bulk scalar coefficient of three-dimensional canopy of staggered and normal pattern have similar value under the sparse and dense conditions, in contrast, bulk scalar coefficient of staggered canopy is higher than that of normal canopy under the condition of frontal area index = 27.4%.(2) The bulk scalar coefficient of uniform canopy is larger than that of canopy with height variation under the condition of plan area density < 17.4%. In Contrast, bulk scalar coefficient of uniform canopy is smaller than that of canopy with height variation under the condition of plan area density = 30.9%. Such a tendency is opposite to the result of drag force coefficient.

在风洞试验中，采用盐度法研究了不同布置方式、平面密度、锋面面积指数和模型高度变化条件下三维冠层中街道的体积标量系数。结果可归纳如下。(1)等高交错排列和正常排列冠层的体积标量系数与锋面积指数的关系表现出不同的趋势。在稀疏和密集条件下，交错型立体冠层和正态冠层的体积标量系数值相近，而在锋面积指数= 27.4%条件下，交错型立体冠层的体积标量系数高于正态冠层。(2)在平面密度<17.4%的条件下，均匀冠层的体积标量系数大于高度变异冠层的体积标量系数。在平层密度为30.9%的条件下，均匀林冠的体积标量系数小于变高林冠的体积标量系数。这种趋势与阻力系数的结果相反。

项目成果

A study on wind tunnel experiment for modeling of the bulk scalar transfer coefficient of complex urban array

复杂城市阵列体标量传递系数建模风洞实验研究

• 发表时间: 2007
• 作者: Satoru;Suenaga;Ken-ichi;Narita;et. al.
• 通讯作者: et. al.

Transfer velocity for the height-variation array- Wind tunnel experiments of the transfer coefficient in an urban area(Part 4)

高度变化阵列的传递速度——城区传递系数风洞实验（第四部分）

• 发表时间: 2007
• 作者: Ken-ichi;Narita
• 通讯作者: Narita

建物高さが不均一な街区の交換速度-都市域における各構成面別の交換係数に関する風洞実験(その4)

建筑高度不均匀城市街区的置换速度——城市地区各构成面交换系数风洞实验（第四部分）

• 发表时间: 2007
• 作者: 鈴木健次;武田紀子;田中稲子;堀越哲美;鈴木 健次;古澤眸,片野坂好子,古屋浩;古澤眸,古屋浩;古澤眸,古屋浩;古澤 眸;古澤 眸;古澤 眸;片野坂好子,古屋浩;片野坂好子,古屋浩;古澤眸,古屋浩;片野坂 好子;片野坂 好子;古澤 眸;古屋浩,安藤美月;古屋 浩;片野坂好子;安藤美月;古澤眸,古屋浩;古澤 眸;古澤眸,古屋浩;古澤 眸;古澤眸,古屋浩;古澤 眸;片野坂好子,古澤眸,江渕克志,古屋浩;古澤眸,片野坂好子,江渕克志,古屋浩;古澤 眸;片野坂 好子;片野坂好子,古澤眸,江渕克志,古屋浩;古澤眸,片野坂好子,江渕克志,古屋浩;片野坂 好子;古澤 眸;古澤眸,片野坂好子,古屋浩;片野坂好子,古澤眸,古屋浩;古澤 眸;片野坂 好子;片野坂好子,古屋浩;安藤美月,古屋浩;成田 健一
• 通讯作者: 成田 健一

複雑形状都市におけるバルク輸送係数モデル化のための風洞実験

复杂形状城市散装输运系数建模风洞实验

• 发表时间: 2007
• 作者: 末永 啓、成田 健一;他3名
• 通讯作者: 他3名