地铁岛式站台空调气流CFD模拟

CFD Simulation of Air Distribution for Subway Island-platform

为给岛式站台的气流组织设计提供依据,评价气流组织设计方案,确定合适的送风温差以优化岛式站台空调系统的设计。建立典型岛式站台的三维几何模型,应用标准湍流模型作为站台气流的物理模型,根据实际测试的站台热湿负荷设定数值模拟的边界条件,应用CFD(计算流体力学)对地铁岛式站台空调系统进行模拟。岛式站台的温度场模拟结果与实际测试的站台温度场吻合较好,表明在合理的简化条件下,采用标准湍流模型的计算流体力学模拟能够较为准确地模拟和预测地铁岛式站台的温度场,可以为岛式站台空调系统的气流组织设计提供依据。

To provide gist of air distribution design for subway island - platform and appraise the blue print of air distribution design, a three - dimension model of typical island - platform was constructed. Then it got an appropriate temperature difference for the supply air to optimize the air conditioning system design for subway island - platform. The physical model was set up with standard turbulence. Based on factual heat and wet load, a boundary condition for the simulation was analyzed. The air flow of subway island - platform was simulated with Computational Fluid Dynamics （CFD）. The Simulated temperature fields were the same as the tested temperature fields. Then the Computational Fluid Dynamics simulation can simulate and forecast subway island - platform temperature fields accurately with standard model. Thus it can provide gist for air - conditional system design of subway island - platform.