基于ANSYS医院街热压通风分析与优化

Analysis and Optimization of Stack Ventilation in Hospital Street Based on ANSYS

摘要: 随着世界能源形势和气候环境的日益恶化，可持续发展和节能减排成为全世界关注的焦点，利用科学技术推动绿色发展成为全球共识。以绿色建筑可持续为背景，基于Fluent软件对医院街建筑进行热压通风数值模拟研究。首先对外置型医院街标准模型进行模拟分析和验证。然后分析该建筑的风速和温度分布规律，并与我国绿色建筑设计规范进行比较分析，最后利用修正开口面积方法进行大小变化来满足更适合的通风量。结果表明：外置型医院街楼层越高，室内平均风速越低，室内温度会在垂直方向上呈现上升的趋势。经过修正方法，建筑在设计工况下运行时，每一层楼的通风量基本一致，通风量相对误差的绝对值在5.0%以内。这说明修正建筑在设计工况下运行良好，可以克服由于高度不同引起的室内通风量不同的问题。

Abstract: With the worsening global energy situation and climate environment, sustainable development and energy conservation have become the focus of worldwide attention. Using science and technology to promote green development has become a global consensus. In the context of sustainable green buildings, this study conducts a numerical simulation of stack ventilation for hospital street buildings based on Fluent software. First, the external-type hospital street standard model is simulated, analyzed, and validated. Then, the wind speed and temperature distribution patterns of the building are analyzed and compared with the green building design standards in China. Finally, a modified opening area method is applied to adjust the size and variations to achieve a more suitable ventilation volume. The results show that, as the building height increases in the external-type hospital street, the average indoor wind speed decreases, and the indoor temperature exhibits an upward trend in the vertical direction. After applying the modification method, the ventilation volume on each floor of the building under design conditions is nearly consistent, with an absolute value of relative error in the ventilation volume within 5.0%. This indicates that the modified building operates well under design conditions and can overcome the issue of varying indoor ventilation volumes due to height differences.