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Development of ventilation system for smoking space separating by circulation flow and re-circulation flow

循环流与再循环流分隔吸烟空间通风系统的开发

基本信息

批准号：
09555178
负责人：
KATO Shinsuke
金额：
$ 8.06万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09555178/
关键词：
Circulation Re-circulation flow Precise model experiment of airflow in room Numerical simulation Ventilation effectiveness Smoking No-smoking

项目摘要

[Experiment]1) We designed and made the precise room model which can reproduce a variety of ventilation properties. An average velocity of the wind and various turbulence statistics amounts were measured in detail in the case of setting up the obstacle and the heat body, etc. indoors in all cases by using this precise room model, and the effectiveness to the indoor ventilation of the re-circulation flow was analyzed in detail.2) The temperature and the average velocity of the wind in micro climate around the human body by metabolic heat of the human body were measured with a thermal manikin. Moreover, the temperature gradient in the boundary layer from the skin of the body was measured by using the thermo-couple of the extra fine, and the convection heat transfer coefficient was calculated directly.[Numeric simulation]1) The above-mentioned precise model was simulated using LES and standard k-epsilon model. It was shown that an analytical result by LES agreed to the experiment very well, and had enough accuracy as a technique by which the adhesion of supply flow from slot type supply opening on the ceiling side and the range of the power the line type exhaust opening and the turn flow and the re-circulation flow can be examined in detail. Moreover, standard k-epsilon model have enough analytical accuracy, and effectiveness as the technique by which various cases were examined was confirmed in the analysis by the model.2) Passive smoking properties were simulated with a computational thermal manikin from which accuracy was verified by the experiment with the above-mentioned thermal manikin in the room. (1)Room ventilation system, (2)arrangement of the human bodies, (3)exhalation velocity of cigarette smoke from the mouth being changed, under the various environment, we analyzed the smoke diffusion properties around the human body.

[实验]1）我们设计并制作了精确的房间模型，可以再现各种通风特性。利用该精密房间模型，详细测量了室内所有情况下设置障碍物、热体等情况下的平均风速和各种紊流统计量，详细分析了再循环流对室内通风的有效性。2)利用热敏电阻测量了人体代谢热引起的人体周围微气候中的温度和平均风速。人体模型。此外，利用超细热电偶测量了距人体皮肤边界层的温度梯度，并直接计算了对流换热系数。 [数值模拟]1)利用LES和标准k-epsilon模型对上述精密模型进行了模拟。结果表明，LES的分析结果与实验非常吻合，作为一种可以详细检查来自天花板侧槽型供气口的供气流量的附着力、线型排气口的功率范围以及回旋流量和再循环流量的技术，具有足够的精度。而且，标准的k-epsilon模型具有足够的分析精度，并且在模型的分析中证实了对各种案例进行检查的技术的有效性。2）利用计算热人体模型模拟被动吸烟特性，并通过上述热人体模型在室内进行的实验验证了其准确性。 (1)房间通风系统，(2)人体的排列，(3)改变香烟烟雾从口中的呼出速度，在各种环境下，我们分析了人体周围的烟雾扩散特性。

项目成果

期刊论文数量（0）

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佐久間健次,林立也,村上周三,高橋岳生,加藤信介,曽潔: "数値サーマルマネキンに関する研究(その12)実験・数値サーマルマネキンと実人体を用いた人体周辺微気象の検討" 日本建築学会大会学術講演梗概集. D-2. 693-694 (1998)

Kenji Sakuma、Tatsuya Hayashi、Shuzo Murakami、Takeo Takahashi、Shinsuke Kato、Kiyoshi So：“数值热人体模型的研究（第十二部分）使用数值热人体模型和真实人体进行人体周围微气候的实验和研究”日本建筑学院学术讲座会议摘要 D-2。