Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fast Fluid Dynamics Simulation of Airflow Around a Single Bluff Body Under Different Turbulence Models
Fast and accurate simulation of outdoor airflow distributions is crucial for studying urban microclimate. In this paper, three pressure-correction schemes (i.e., NIPC, SIPC and NSPF) are implemented in OpenFOAM and validated with experimental data. The differences of these schemes applying five k-ε turbulence models to quickly simulate the airflow around a single1:1:2 bluff body are analysed. These schemes can accurately predict the main airflow characteristics around the bluff body and are about 2.5–3.5 times faster than the PISO algorithm. The shortest computation time occurs when applying the RKE turbulence model, followed by SQKE and RNG, while the computation time is longest when applying SKE and LBKE. NIPC and SIPC have similar computational speeds, while NSPF is about 10–16% faster than them. Considering computational accuracy and efficiency, the RNG and SQKE are the best among the tested turbulence models.
Fast Fluid Dynamics Simulation of Airflow Around a Single Bluff Body Under Different Turbulence Models
Fast and accurate simulation of outdoor airflow distributions is crucial for studying urban microclimate. In this paper, three pressure-correction schemes (i.e., NIPC, SIPC and NSPF) are implemented in OpenFOAM and validated with experimental data. The differences of these schemes applying five k-ε turbulence models to quickly simulate the airflow around a single1:1:2 bluff body are analysed. These schemes can accurately predict the main airflow characteristics around the bluff body and are about 2.5–3.5 times faster than the PISO algorithm. The shortest computation time occurs when applying the RKE turbulence model, followed by SQKE and RNG, while the computation time is longest when applying SKE and LBKE. NIPC and SIPC have similar computational speeds, while NSPF is about 10–16% faster than them. Considering computational accuracy and efficiency, the RNG and SQKE are the best among the tested turbulence models.
Fast Fluid Dynamics Simulation of Airflow Around a Single Bluff Body Under Different Turbulence Models
Environ Sci Eng
Wang, Liangzhu Leon (Herausgeber:in) / Ge, Hua (Herausgeber:in) / Zhai, Zhiqiang John (Herausgeber:in) / Qi, Dahai (Herausgeber:in) / Ouf, Mohamed (Herausgeber:in) / Sun, Chanjuan (Herausgeber:in) / Wang, Dengjia (Herausgeber:in) / Li, Ruibin (Autor:in) / Liu, Zhanpeng (Autor:in) / Zhao, Yi (Autor:in)
International Conference on Building Energy and Environment ; 2022
Proceedings of the 5th International Conference on Building Energy and Environment ; Kapitel: 12 ; 101-110
05.09.2023
10 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Bluff-body aerodynamics and turbulence
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