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Double-skin façade simulation with computational fluid dynamics:A review of simulation trends,validation methods and research gaps

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Building Simulation 2023年第12期16卷 2307-2331页

作者： Simon Pommerencke Melgaard Ivan Titov Nikolaisson Chen Zhang Hicham Johra olena kalyanova larsen Department of the Built Environment Aalborg UniversityDenmarkThomas Manns Vej 239220 AalborgDenmark

Dynamic simulation of a double-skin façade(DSF)with computational fluid dynamics(CFD)can be challenging due to the lack of validated models and benchmarking ***,there is a lack of consensus in the scientific community on what constitutes a successfully validated DSF *** present review study identifies simulation trends and research gaps for DSFs simulated with ***,this article presents a series of CFD simulations in which key aspects of the DSF modelling are varied:2D or 3D modelling approaches,turbulence viscosity models(TVMs),radiation models,and wall *** simulation results are compared to the empirical data(both temperature and velocity fields)of a benchmark test with laboratory-controlled boundary *** analysis shows that using the k-εRNG model with enhanced wall treatment and surface-to-surface(S2S)radiation model yields the best results for the 2D case of natural convection ***,it is shown that accounting for the velocity field in the validation process is essential to ensure the suitability of a ***,the authors advocate for the use of selected dimensionless numbers to improve the comparability of the different DSF scientific *** would also help to identify relevant experimental datasets for validation and suitable CFD simulation settings for specific DSF cases.

关键词： double-skin facade ventilated cavity computational fluid dynamics empirical validation modelling parameters dimensionless numbers convection

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Evaluating the different boundary conditions to simulate airflow and heat transfer in Double-Skin Facade

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Building Simulation 2022年第5期15卷 799-815页

作者： Javad Ahmadi Mohammadjavad Mahdavinejad olena kalyanova larsen Chen Zhang Afsaneh Zarkesh Somayeh Asadi Highperformance Architecture Laboratory Department of ArchitectureTarbiat Modares UniversityJalal-e Al Ahmad HighwayNasr bridgeTehranIran Department of Built Environment Faculty of Engineering and ScienceDivision of Architectural EngineeringAalborg UniversityAalborgDenmark Department of Architectural Engineering Pennsylvania State UniversityPA 16801USA

The CFD simulation accuracy mostly depends on the appropriate setting of boundary conditions and numerical simulation *** study shows the influence of two types of boundary condition settings on the CFD simulation results of Double-Skin Facade(DSF)for a specific *** two boundary settings are the constant temperature on the DSF surfaces called Boundary A,and Boundary B is defined via solar radiation using the Discrete Ordinate radiation Model(DOM).The paper verified both the numerical simulations using the experimental *** the numerical results of two types of boundaries with experimental data shows that both cases underestimated the values lower than 5.2 K and 0.1 m/s for the temperature and velocity respectively at the regarded measured *** A gives more accurate temperature prediction results,while Boundary B shows velocity magnitude closer to the measurements in the middle height of the cavity;the average temperature and velocity differences between the two boundary types are 0.6 K and 0.003 m/s respectively which are ***,the selection of boundary conditions depends on study purposes,however,when the DSF is equipped with blinds and if there is not enough data in hand but the exact value of solar irradiation,using the Boundary B approach is suggested;it can provide reasonable results associated with multi-type of thermal boundary conditions at the same ***,if the goal is to investigate the flow pattern in the DSF,Boundary B is argued to perform better than the constant temperature boundary condition.

关键词： Double-Skin Facade boundary conditions thermal performance airflow irradiation

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