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Título
Advances in CFD Modeling of Urban Wind Applied to Aerial Mobility
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Fluids
Número de la revista
7
Datos de la obra
García-Gutiérrez, A., Gonzalo, J., López, D., & Delgado, A. (2022). Advances in CFD Modeling of Urban Wind Applied to Aerial Mobility. Fluids, 7(7), 246.
Editor
MDPI
Fecha
2022-07
Abstract
[EN] The feasibility, safety, and efficiency of a drone mission in an urban environment are heavily influenced by atmospheric conditions. However, numerical meteorological models cannot cope with fine-grained grids capturing urban geometries; they are typically tuned for best resolutions ranging from 1 to 10 km. To enable urban air mobility, new now-casting techniques are being developed based on different techniques, such as data assimilation, variational analysis, machine-learning algorithms, and time series analysis. Most of these methods require generating an urban wind field database using CFD codes coupled with the mesoscale models. The quality and accuracy of that database determines the accuracy of the now-casting techniques. This review describes the latest advances in CFD simulations applied to urban wind and the alternatives that exist for the coupling with the mesoscale model. First, the distinct turbulence models are introduced, analyzing their advantages and limitations. Secondly, a study of the meshing is introduced, exploring how it has to be adapted to the characteristics of the urban environment. Then, the several alternatives for the definition of the boundary conditions and the interpolation methods for the initial conditions are described. As a key step, the available order reduction methods applicable to the models are presented, so the size and operability of the wind database can be reduced as much as possible. Finally, the data assimilation techniques and the model validation are presented.
Materia
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DOI
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