论文部分内容阅读
以特长单线隧道为研究对象,建立了隧道内空气温度计算模型,采用有限体积法对方程进行离散,用MATLAB工具编写隧道内空气温度模拟计算程序。分别对采用建筑物夏季通风计算温度ODT、近20年每年最热月月平均温度的平均值ATH及逐时典型气温OHT 3种不同外界计算温度时夏季最热月隧道内的空气温度进行了模拟计算,得到了隧道内空气温度的分布规律及最高空气温度的变化规律。结果表明,选取ATH作为计算参数,可较准确地预测夏季最热月隧道内空气温度的最高值。
Taking the special long-distance tunnel as the research object, the calculation model of the air temperature in the tunnel was established. The finite volume method was used to discretize the equations. The MATLAB program was used to simulate the temperature of the air in the tunnel. The temperature of the air in the hottest month in summer tunnel was simulated by using the ODT of building ventilation in summer, the mean ATH of average temperature of the hottest month in each of the past 20 years, and the hourly typical temperature OHT The distribution of the air temperature in the tunnel and the variation law of the maximum air temperature are obtained. The results show that ATH can be used as a parameter to predict the highest air temperature in the hottest month in summer.