Airflow in underground railway station platforms is turbulent. Boundary conditions and proper turbulence model are required to determine when adopting CFD to simulate platform ventilation.
地铁站台的气流流动属湍流流动，采用CFD对站台通风方式进行模拟时需要确定相关的边界条件和适用的湍流模型。
Based on hydromechanics affinity theory and major control factor of highway tunnel ventilation, the paper had made certain highway tunnel ventilation boundary condition.
根据流动相似性理论和隧道通风主要控制因素，确定隧道通风的边界条件；
In the optimization of a mine ventilation network, the boundary overstepping took place in Golden Section Search.
在复杂矿井通风网络优化计算中，发现了黄金分割法的越界现象。
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