Study on the indoor airflow pattern and thermal comfort under cross ventilated situation of residential building by using domain decomposition technique

利用域分解技术研究住宅建筑交叉通风情况下的室内气流模式及热舒适度

• 批准号: 22360241
• 负责人: KURABUCHI Takashi
• 金额: $ 11.48万
• 依托单位: Tokyo University of Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22360241/
• 关键词: 自然通風; CFD 解析; 領域分割法; 全域計算法; ウィンドキッチャー; 風洞実験; OpenFOAM; 天窓; CFD解析; 風速比; 開口部; STAR-CD; 乱流モデル; 通風; CFD; サーマルマネキン

We mainly did four kinds of studies.1. Study on prediction in cross-ventilation performance2. Evaluation of cross-ventilation performance of various opening conditions3. Prediction method of cooling sensation due to breezing airflow driven by cross-ventilation4. Study on the convective heat transfer coefficient and thermal resistance of clothing under cross ventilationThese main results are shown below.・Modification of inflow boundary conditions based on coupled simulation results showed some effect to improve reproduction accuracy of cross-ventilated indoor airflow structures.・The results showed that, generally speaking, the wind velocity ratio value C can be determined uniquely for each opening case, almost regardless of the location or time slot, and confirmed the validity of the method of evaluating cross-ventilation performance which uses the wind velocity ratio C and ignores locality.・From the results of the cooling effect of cross-ventilation airflow had on the occupants, we also found that it is possible to perform relatively high-accuracy prediction by using numerical thermal mannequin with decoupled CFD technique.・ In the case of clothing with high breathability, thermal resistance of clothing decreased by 10-20% at a wind speed of 0.5 m/s, 20% at a wind speed of 1 m/s, and 30-40% at a wind speed of 2 m/s.

我们主要做了四种研究。交叉通风性能预测的研究2。不同开孔条件下的交叉通风性能评价交叉通风驱动的微风气流降温感觉预测方法4。交叉通风条件下服装对流换热系数和热阻的研究主要结果如下：基于耦合模拟结果的入流边界条件修正对提高交叉通风室内气流结构的再现精度有一定的效果。结果表明，一般情况下，风速比C值对于每个开口情况都是唯一确定的，几乎不受位置或时间段的限制，证实了用风速比C来评价交叉通风性能而忽略局部的有效性。从数值模拟结果分析了交叉通风气流对乘员的降温效果，发现采用解耦CFD技术的数值热人体模型可以进行较高精度的预测。·对于透气性较高的服装，当风速为0.5m/S时，服装的热阻降低了10%-20%，风速为1m/S时，服装的热阻降低了20%，风速为2m/S时，服装的热阻降低了30%-40%。

项目成果

A study on the convective heat transfer coefficient and thermal resistance of clothing under cross ventilation

交叉通风下服装对流换热系数及热阻研究

• 发表时间: 2011
• 期刊: The International Journal of Ventilation
• 作者: Keiko SATO;Takashi KURABUCHI;Takeshi OGASAWARA;Masaaki OHBA;Shizuo IWAMOTO;Nobumi SAHASHI and Seigo IKEHARA
• 通讯作者: Nobumi SAHASHI and Seigo IKEHARA

Cross-ventilation performance with variable opening condition in a detached house located in urban area

城区独立住宅变开口条件下的交叉通风性能

• 发表时间: 2013
• 作者: Yuuki YAMANAKA;and Takashi KURABUCHI
• 通讯作者: and Takashi KURABUCHI

A study on thermal resistance of clothing under cross ventilatedsituation, INDOOR AIR 2011

交叉通风条件下服装热阻研究，室内空气 2011

• 发表时间: 2011
• 作者: Nobummi SAHASGI;Takashi. KURABUCHI;Takeshi OGASAWARA;Keiko SATO;SeigoIKEHARA;Masaaki OHABA and ShizuoIWAMOTO
• 通讯作者: Masaaki OHABA and ShizuoIWAMOTO

Decoupled simulation of cross-ventilated indoor airflow of residential buildings, Passive and Low Energy Cooling for the Built Environment

住宅建筑交叉通风室内气流的解耦模拟，建筑环境的被动式低能耗冷却

• 发表时间: 2010
• 作者: Takashi KURABUCHI;Kumiko TSURUTA;Yuma KOUCHI;and Masaaki OHBA
• 通讯作者: and Masaaki OHBA

Building simulation on reduction of cooling loads for detach house in intermediate and raining seasons by cross-ventilation in Japan,Passive and Low Energy Cooling for the Built Environment

日本独立住宅通过交叉通风减少中间雨季冷负荷的建筑模拟建筑环境的被动式低能耗冷却

• 发表时间: 2010
• 作者: Kenji TSUKAMOTO;Masaaki OHBA;Takashi KURABUCHI;Tomoyuki ENDO;and Toshihiko NONAKA
• 通讯作者: and Toshihiko NONAKA