公路隧道竖井送排式通风送风口角度优化模型

摘要

为降低公路隧道竖井送排式通风能耗,应用雷诺数相似理论,对竖井送排式通风送风口与隧道轴向夹角进行物理模型试验研究,测试不同送风口角度时风速的变化规律.结果表明:送风口角度对送风动力的影响随送风段隧道平均风速的增大而增大;当隧道设计风速为6~8 m/s时,送风口与隧道轴向夹角宜取5°~6°.%In order to save ventilation energy of highway tunnel blowing and exhausting longitudinal ventilation system, based on Reynolds Number Similarity theory, this paper researched air supply outlet angle, and tested wind speed changing regulations at different angles. The test results indicate that the angle affect ventilation motive greatly when average wind speed growth in blowing ventilation section; when designing wind speed in the tunnel is from 6 m/s to 8 m/s, the angle should be from 5° to 6°. 10 figs, 10 refs.