• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Ventilation >Study of the Airflow Structure in Cross-Ventilated Rooms based on a Full-Scale Model Experiment
【24h】

Study of the Airflow Structure in Cross-Ventilated Rooms based on a Full-Scale Model Experiment

机译：基于全尺寸模型实验的交叉通风房间气流结构研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Cross ventilation to reduce cooling energy is one of the most important techniques for maintaining a comfortable indoor environment in hot and mild seasons. However, at present, it is difficult to design the indoor environment under cross ventilation because there is insufficient knowledge to evaluate the effect of cross ventilation quantitatively. To develop an understanding of the flow characteristics a full-scale model experiment was performed in a large wind tunnel to examine airflow properties in a cross-ventilated space. The purpose of this paper is to clarify the airflow structure in the cross-ventilated room in relation to wind direction. The key factors determining the airflow structure in the space were found to be: the main current region, rebounding and changing flow direction, deflected flow, surface flow and circulating flow. It was observed that the main air current tends to travel in a straight line until it collides with obstacles. On collision, the flow changes direction and deflected flows are formed over and/or under the main current. When there is enough space alongside the main current region, a circulating flow is formed in each room. The room mean velocity was found to be dependent on the path of the air current. When the main current is well defined, a relatively low value of mean velocity is observed. When the main current is divided, the room containing the inflow opening has a relatively high velocity.
机译：在炎热和温和的季节中，采用交叉通风以减少冷却能是保持舒适的室内环境的最重要技术之一。然而，目前，由于缺乏足够的知识来定量评价交叉通风的效果，因此难以设计交叉通风的室内环境。为了了解流动特性，在大型风洞中进行了全面的模型实验，以检查交叉通风空间中的气流特性。本文的目的是弄清相对于风向的交叉通风室内的气流结构。发现决定空间中气流结构的关键因素是：主电流区，回弹和变化的流向，偏转流，表面流和循环流。据观察，主气流趋于沿直线传播，直到与障碍物碰撞为止。发生碰撞时，流量会改变方向，并且在主电流上方和/或下方会形成偏转的流量。当主电流区域旁边有足够的空间时，每个房间中都会形成循环流。发现室内平均速度取决于气流的路径。当主电流定义良好时，可以观察到较低的平均速度值。当主电流被分流时，包含流入开口的房间具有相对较高的速度。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号