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首页> 外文期刊>Building and Environment >CFD evaluation of new second-skin facade concept for wind comfort on building balconies: Case study for the Park Tower in Antwerp
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CFD evaluation of new second-skin facade concept for wind comfort on building balconies: Case study for the Park Tower in Antwerp

机译：CFD对新型第二层外墙概念在建筑阳台上的防风舒适性的评估：以安特卫普的公园大厦为例

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摘要

High wind speed around high-rise buildings can lead to wind discomfort or wind danger at building balconies. This paper presents the evaluation of a new facade concept that is intended to significantly reduce the wind speed and therefore improve wind comfort on the balconies of high-rise buildings. The concept consists of a staggered semi-open second-skin facade in front of the balconies, which partly shields them from the wind. The concept is evaluated for the new 78 m high Park Tower in the urban area of Antwerp, where it will be implemented. 3D steady Reynolds-averaged Navier-Stokes Computational Fluid Dynamics (CFD) simulations are performed for the case with and without this facade concept. The simulations are made with the realizable k-ε turbulence model on a high-resolution grid. Validation is conducted using wind-tunnel measurements of surface pressure distribution on a building model with balconies. Wind comfort for the Park Tower is assessed with the Dutch wind nuisance standard NEN8100 for the case with and without the second-skin facade concept. The analysis shows that this concept is effective in providing a zone with pressure equalisation at the balconies. The related reduction in pressure gradients across the width of the facade strongly decreases the local wind speed. At many positions along the balconies this yields a wind comfort improvement of one or even two classes in the Dutch wind nuisance standard compared to the situation without implementation of this concept.
机译：高层建筑物周围的高风速可能导致建筑物阳台上的风不适或风危险。本文介绍了一种新立面概念的评估，该构想旨在显着降低风速，从而提高高层建筑阳台的抗风舒适性。该概念由阳台前交错的半开放式第二层皮肤立面组成，部分遮挡了阳台。该概念已在安特卫普市区新的高78 m的公园塔进行了评估，并将在其中实施。在有或没有此立面概念的情况下，均执行3D稳态雷诺平均Navier-Stokes计算流体动力学（CFD）仿真。使用可实现的k-ε湍流模型在高分辨率网格上进行仿真。使用风洞测量带有阳台的建筑模型上的表面压力分布进行验证。对于带有或不带有第二层外立面概念的外壳，公园塔楼的防风舒适性采用荷兰防风标准NEN8100进行评估。分析表明，此概念对于在阳台上为区域提供压力均衡是有效的。跨立面宽度的压力梯度的相关降低会大大降低局部风速。与没有实施此概念的情况相比，在阳台上的许多位置上，这在荷兰防风标准中的防风舒适性提高了一到两级。

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