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Study of numerical method for thermal radiation and air flow on the human body in nonuniform room environment

非均匀室内环境下人体热辐射和气流数值方法研究

基本信息

批准号：
14550590
负责人：
MANABE Masaki
金额：
$ 2.05万
依托单位：
Oita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550590/
关键词：
human body model shape factor simulation thermal radiation shape factor distribution map human body surface 人体形状非接触型3次センサー

项目摘要

Using the non-contact 3D digitizer that was bought by this Grant-in-Aid for Scientific Research, the few bodies of the healthy youth boys ware measured, and the 3D body models ware made from the measured data. We researched the difference of the shape factor between these body models by simulation. Consequently, in the case of the 1m distance of the human body and the wall, there was about 8 -14% of difference by the model, and in the case of the 7m distance of the human body and the wall, there was about 4 -6% of difference by the model. Developing the shape factor calculation program on the human body surface, the room wall shape factor distribution map on the human body surface could be indicated by 3D visualization. As a result of executing calculation of the case staying one person/m2 in the room, other persons' shape factor of the sitting subject is 0.23, and the 1.96 persons/m2 case is 0.43. The full-scale experiment unit was made and we measured the thermal radiation from the wall to the mannequin. The wall was heated with the electric carpet, and the mannequin's surface temperature was measured by thermo-couple and thermography. And the surface temperature distribution map on the mannequin's surface was obtained. We calculated the wall shape factor distribution map on the mannequin's surface by the simulation. This map is similar to other map very much. We can indicate that the shape factor distribution map expresses the surface temperature distribution map. This means shape factor simulation is quite useful to these thermal radiation. We made the concrete floor heating system in the experiment unit, and airflow of the mannequin's surface was measured. The airflow simulation of warming floor with the 3D human body model was executed, and the results of the simulation indicate that the convection has occurred on the human body surface.

利用本次科研资助项目购买的非接触式三维数字化仪，对健康青年男孩的几个身体进行了测量，并根据测量数据制作了三维身体模型。通过仿真研究了不同体型模型的形状因子差异。因此，在人体与墙体距离为1m的情况下，模型的差异约为8 -14%，在人体与墙体距离为7m的情况下，模型的差异约为4 -6%。开发了人体表面形状因子计算程序，实现了人体表面房间墙体形状因子分布图的三维可视化显示。对室内1人/m2的情况进行执行计算，坐着受试者的其他人形状因子为0.23,1.96人/m2的情况为0.43。制作了一个全尺寸的实验装置，我们测量了从墙体到人体模型的热辐射。用电热毯加热墙体，用热电偶和热成像仪测量人体表面温度。得到了人体表面温度分布图。通过仿真计算得到了人体表面壁面形状因子分布图。这张地图和其他地图很相似。可以看出，形状因子分布图表示地表温度分布图。这意味着形状因子模拟对这些热辐射非常有用。在实验单元中制作了混凝土地暖系统，并对人体表面的气流进行了测量。利用三维人体模型对暖地板进行了气流模拟，模拟结果表明，暖地板在人体表面发生了对流。