所属单位：

建筑设备科学与工程学院

发表刊物：

Building Simulation

关键字：

中文关键字：雷诺应力模型；管道；阻力；弯管；耦合弯管；能量耗散，英文关键字：RSM;dust;drag;bend;coupled bend;energy consumption

摘要：

The coupling effect of local components is common in buildings and results in energy loss and local drag. This effect is significantly influenced by the shape and size of the components. However, only a few studies have focused on this topic. The numerical simulation method of Reynolds stress model (RSM) is adopted in the present study to investigate the typically coupled local components of ventilation and air conditioning ducts, namely, the coupled bend. By focusing on the core speed and segmented drag in the coupled bend, this study explores the effects of aspect ratio and curvature radius on drag and core speed. This study provides a theoretical basis for the design, construction, and operation management of local components of ventilation and air conditioning ducts. Two evident core-speed reduction processes are observed in the coupled bend and its downstream. With increasing curvature radius (R/D), the drop in core speed downstream decreases gradually in the S-shaped and U-shaped bends.

备注：

李安桂

合写作者：

陈仕扩,赵建勋

第一作者：

李安桂[重名-待确认],张莹,高然

论文类型：

期刊论文

卷号：

卷：9

期号：

期：

页面范围：

页：311-318

是否译文：

否

发表时间：

2016-12-01