【摘要】 对于气体泄漏的几种释放量进行了模型试验,并在模型试验的基础上,数值模拟了在带有燃气管道的共同沟中燃气泄漏后的摩尔组分浓度分布。针对几种经典的湍流模型,对试验情况进行了数值仿真。对比模型试验结果发现,在气体泄漏点的一定范围内,标准k?ε湍流计算模型能够模拟燃气的泄漏,数值计算的燃气摩尔组分浓度能够满足工程精度要求。更多还原

【Abstract】 Experiments on gas leaking rates in utility tunnels were carried out.Based on the experiments,gas mole distribution in utility tunnels was simulated using numerical method.The experiments were simulated with several classical turbulent models.Compared with experimental results,it is found that the gas mole fraction can be simulated by standard k ?ε turbulent model,the results of which satisfy the demands of practical applications.更多还原