Joint processing of wind speed and wind direction to improve the representativeness of CFD analysisTitle of the Article in English

Authors

  • Maria Alejandra Orozco Sosa Universidad Nacional de Colombia
  • Jorge Hernán Salazar Trujillo

DOI:

https://doi.org/10.46421/encacelacac.v18i1.7221

Keywords:

Wind Speed, Wind Direction, Intervals, Representativeness

Abstract

For CFD simulations of natural ventilation, wind speed and direction values, commonly obtained from EPW files, are used. These are significantly simplified to provide hourly values ​​and assume a single ground point is representative of the entire city. This study aims to improve wind characterization by using data from a local meteorological station. Wind speed and direction records were jointly processed, categorized by year, month, and hour. Using graphical exploration, the most frequent values ​​for each hourly period were identified. The results show that the wind has predominant lines that repeat over time. This information allows for more accurate selection of input values ​​for CFD, better representing actual wind conditions at the study site.

References

Blocken, Bert. Computational Fluid Dynamics for urban physics: Importance, scales, possibilities, limitations and ten tips and tricks towards accurate and reliable simulations. Building and Environment, Vol 91, 2015. pp 219-245.

Molina, L. Orozco, MJ. Orozco, MA. Salazar, J. Windows design to improve natural ventilation performance including climate based metrics and human fator analysis. En: CONFERENCIA INTERNACIONAL PLEA – WILL CITIES SURVIVE?, 36., 2022, Santiago.

Maklad, Y.Generation of an annual typical meteorological wind speed for armidale NSW, Australia, IOSR J. Eng. 4, 2014, pp 9–14.

Liu, Rui. Wang, Yuxiang. Zhang, Yu. Peng, Zhixing. Chen, Hankai. Li, Xiang. Li, Hang, Li, Weiyue. Analysis of the city-scale wind environment and detection of ventilation corridors in high-density Metropolitan areas based on CFD method, Urban Climate, Vol 59, 2025.

Zeng, Zhaoyun. Stackhouse, Paul. Kim,Ji-Hyun (Jeannie). Muehleisen, Ralph T.. Development of typical solar years and typical wind years for efficient assessment of renewable energy systems across the U.S., Applied Energy, Vol 377, Part D, 2025.

Ma’bdeh, Shouib Nouh. Hamasha, Asia Ali. Al-Shawabkeh, Majd. Alali, Razan Omar. Almomani, Rahaf Mohammad. Obeidat, Laith M. Alrebei, Odi Fawwaz. Enhancing office air quality: The role of window to wall ratio with window-wind catchers using CFD analysis. Energy Reports, Vol 13, 2025, pp1508-1524.

SIATA. Sistema de Alerta Temprana del valle de Aburrá [online]. 2025 [accessed. 2025-01-20]. Available at: https://siata.gov.co/siata_nuevo/

Published

2025-08-16

How to Cite

OROZCO SOSA, Maria Alejandra; SALAZAR TRUJILLO, Jorge Hernán. Joint processing of wind speed and wind direction to improve the representativeness of CFD analysisTitle of the Article in English. In: ENCONTRO NACIONAL DE CONFORTO NO AMBIENTE CONSTRUÍDO, 18., 2025. Anais [...]. [S. l.], 2025. DOI: 10.46421/encacelacac.v18i1.7221. Disponível em: https://eventos.antac.org.br/index.php/encac/article/view/7221. Acesso em: 3 may. 2026.

Issue

Section

2. Clima e Planejamento Urbano