权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Coupling Calculation for Radiative and Convective Heat Transfer and Development of Mist Cooling Technology to Prevent Heat Stroke

辐射与对流传热耦合计算及防中暑喷雾冷却技术开发

基本信息

批准号：
21K14087
负责人：
江目宏樹
金额：
$ 2.91万
依托单位：
Yamagata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Early-Career Scientists
财政年份：
2021
资助国家：
日本
起止时间：
2021-04-01 至 2024-03-31
项目状态：
已结题

项目摘要

本研究では，ウォーターミストによるふく射熱の遮蔽及び流動場の能動的制御の実現を目的とした．ふく射性媒体の非灰色吸収，非等方散乱特性を記述できるふく射伝熱解析コードを用いて，精度検証を行った．灰色非等方散乱性媒体を含んだ系のふく射伝熱解析との比較を行った結果，先行研究と概ね一致した結果が得られ，光線数が800本で精度を担保できることを示した．また，Band数が4 Bandsでも高精度のふく射伝熱解析が可能であることを示した．疑似非等方散乱式を適用した場合，HG位相関数のそれとほぼ同じ温度場とふく射熱伝達を示したため，計算コストを大幅に削減できることを示した．さらに，その結果をもとにウォーターミストが混入した対流-ふく射の複合伝熱解析を行った．ミストの混入が壁近郊での温度の乱流変動を抑制し，ふく射熱伝達の抑制に貢献することを示した．また，ウォーターミストの噴霧実験を行いミスト層の透過スペクトルの測定をした．最後にミスト層のふく射輸送解析を行い，実験結果との比較をして評価を行った．ミストの透過スペクトルの測定実験により，光路体積の増加がふく射熱の遮蔽に寄与する可能を示した．定量評価により，最適化した粒径のミスト層は遮蔽率が非常に高いことを示した．光線追跡法によるふく射要素法の解析結果から，実験結果の有用性を確認した．ウォーターミストを用いた消防装置開発における実用環境下に近い場合のふく射伝熱現象に関する理解が深まった．これらの知見を用いて，可搬自衛噴霧装置や消火ホースなど，消防職員の命を守る技術の開発に貢献できる．

The purpose of this study is to analyze the characteristics of non-isotropic media, which is characterized by non-gray absorption and non-equisquare dispersion characteristics. Gray non-isometric scattered media contains the results of the analysis and comparison of radiation characteristics. Gray non-isotropic scattered media contains the results of the analysis and comparison of radiation images. In this paper, we first study the results of the general and consistent results, and the results show that the optical precision is 800. in this paper, the accuracy is guaranteed to show that. The Band number 4 Bands, high precision, high The calculation results show that the temperature and turbulence in the suburbs of the wall can be suppressed, and the temperature turbulence in the suburbs of the wall will be suppressed. In the end, the results show that there are significant differences between the transmission and analysis of the data. In the final analysis, the results are as follows: in the final analysis, the results show that the results are in good agreement with each other. In the end, the results show that there are significant differences between the transmission and the analysis of the data, and the results show that the data can be determined by the measurement of the data, and the light system can be detected by the optical system. The most efficient particle size measurement shows that the shielding rate is very high. The ray tracing method is used to analyze the results of the radiation element method, and the results show that the results are useful. The results confirm the usefulness of the results. The fire protection equipment is used to operate the fire protection system in the environment. In the environment, the fire protection equipment is used in the environment to understand the impact of the fire. It can be moved from the fire fighting equipment to extinguish the fire, and the firefighters are required to keep the technical staff responsible for the opening of the fire service.