Balcony design and surrounding constructions effects on natural ventilation performance and thermal comfort using CFD simulation: a case study

IF 2.2 4区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Journal of Building Performance Simulation Pub Date : 2023-03-07 DOI:10.1080/19401493.2023.2185682

Nima Izadyar, W. Miller, B. Rismanchi, V. Garcia-Hansen, Soha Matour

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引用次数: 2

Abstract

Despite natural light, near-façade structures’ impact on Natural Ventilation (NV) performance, reducing cooling demand, is usually ignored by designers. This article aims to characterize interactions between balconies’ design features (i.e. depth, unit level, and wind incident) and near-façade buildings on single-sided NV performance in a case study, representing medium to high-rise apartments in dominant cooling climates, utilizing validated Computational Fluid Dynamics (CFD) simulations. Results show that nearby buildings, even small structures close to the façade, significantly impact windward flow regime and indoor air movements. Nearby blocks might result in less air entering, which could be moderated by designing deeper balconies. Perpendicular wind incidents to the balcony opening may enormously improve single-sided NV performance. In contrast, wind incidents within higher degrees from perpendicular strongly reduce NV performance. This study provides designers with a method to characterize balcony design features’ effects on NV performance in apartments and improve it concerning urban design.

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阳台设计及周边结构对自然通风性能和热舒适影响的CFD模拟研究

尽管有自然光，近立面结构对自然通风(NV)性能的影响，减少了冷却需求，通常被设计师忽视。本文旨在利用经过验证的计算流体动力学(CFD)模拟，在一个案例研究中，描述阳台设计特征(即深度、单元水平和风入射)与近立面建筑单面NV性能之间的相互作用，该案例代表了主导凉爽气候下的中高层公寓。结果表明，附近的建筑物，即使是靠近正面的小型建筑物，也会显著影响迎风流动和室内空气运动。附近的街区可能会导致空气进入较少，这可以通过设计更深的阳台来缓和。垂直于阳台开口的风事件可以极大地改善单面NV性能。相反，在垂直度较高的风事件强烈降低NV性能。本研究为设计师提供了一种方法来表征公寓阳台设计特征对NV性能的影响，并在城市设计中加以改进。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Building Performance Simulation CONSTRUCTION & BUILDING TECHNOLOGY-

CiteScore

5.50

自引率

12.00%

发文量

审稿时长

12 months

期刊介绍： The Journal of Building Performance Simulation (JBPS) aims to make a substantial and lasting contribution to the international building community by supporting our authors and the high-quality, original research they submit. The journal also offers a forum for original review papers and researched case studies We welcome building performance simulation contributions that explore the following topics related to buildings and communities: -Theoretical aspects related to modelling and simulating the physical processes (thermal, air flow, moisture, lighting, acoustics). -Theoretical aspects related to modelling and simulating conventional and innovative energy conversion, storage, distribution, and control systems. -Theoretical aspects related to occupants, weather data, and other boundary conditions. -Methods and algorithms for optimizing the performance of buildings and communities and the systems which service them, including interaction with the electrical grid. -Uncertainty, sensitivity analysis, and calibration. -Methods and algorithms for validating models and for verifying solution methods and tools. -Development and validation of controls-oriented models that are appropriate for model predictive control and/or automated fault detection and diagnostics. -Techniques for educating and training tool users. -Software development techniques and interoperability issues with direct applicability to building performance simulation. -Case studies involving the application of building performance simulation for any stage of the design, construction, commissioning, operation, or management of buildings and the systems which service them are welcomed if they include validation or aspects that make a novel contribution to the knowledge base.