模型试验的数值仿真——深圳大盐共同沟安全研究

Numerical simulation of model experiment——research into security of Shenzhen Dayan utility tunnel

根据模型试验,数值模拟了在带有燃气管道的共同沟中燃气泄漏后的浓度分布,并对浓度分布情况进行分析.对比模型试验结果发现,在气体泄漏点的一定范围内,标准kε湍流计算模型能够模拟燃气的泄漏,数值计算的燃气浓度能够满足工程精度要求.数值分析表明,实际工程可以用标准kε湍流数值模型来模拟.

According to model experiment, the distribution of gas concentration in utility tunnel is predicted (using) numerial simulation; and the situation of gas concentration distribuation is analysed. Comparison with experiment results, it is found that the gas concentration can be simulated by standard k-ε turbulence model; and numerical accuracy is satisfactory in engineering, within certain distances nearby gas getting out point. The numerical simulations show that the case of engineering can be simulated (using) standard k-ε turbulence model.