| 公路隧道送排风短道流场数值分析及优化研究 |
| |
| 引用本文： | 石平,夏永旭.公路隧道送排风短道流场数值分析及优化研究[J].地下空间与工程学报,2009,5(2). |
| |
| 作者姓名： | 石平 夏永旭 |
| |
| 作者单位： | 1. 长安大学公路学院,西安,710064;湖北省交通规划设计院,武汉,430051
2. 长安大学公路学院,西安,710064 |
| |
| 基金项目： | 交通部行业联合攻科技关项目 |
| |
| 摘 要： | 在竖井送排式通风时,排风口和送风口之间可能产生短道流动,这种短道流动会阻碍隧道内的空气交换.文章利用有限元方法对送排风短道流场进行三维数值分析,研究表明:采用竖井送排式纵向通风时,短道内风流回流区总是存在的;回流区的范围L随短道长度的增加而显著减小;考虑到降低通风能耗和满足空气质量两方面的因素,短道的长度一般适宜取65m～80m.
|
| 关 键 词： | 公路隧道 短道 数值模拟 优化 |
Numerical Analysis and Optimization Research of Short Duct Flow Field of Outlet and Inlet in Highway Tunnel |
| |
| SHI Ping,XIA Yong-xu.Numerical Analysis and Optimization Research of Short Duct Flow Field of Outlet and Inlet in Highway Tunnel[J].Chinese Journal of Underground Space and Engineering,2009,5(2). |
| |
| Authors: | SHI Ping XIA Yong-xu |
| |
| Affiliation: | 1.Highway Institute;Chang'an University;Xi'an 710064;China;2.Communication Planning and Design Institute of Hubei Province;Wuhan 430051;China |
| |
| Abstract: | When the sending and exhausting shaft is ventilated,short duct flow may occurred between outlet and inlet,which will baffle air exchange in highway tunnel.By applying finite-element method,this paper analyzed three-dimensionally the flow field of short duct,the result shows that the back flow in short duct exists always;the range L of back flow can be reduced obviously as the length of short duct is increased;considering reducing energy dissipation and satisfying the air quality,the proper length of short d... |
| |
| Keywords: | highway tunnel short duct numerical simulation optimization |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
