Journal
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
Volume 189, Issue -, Pages 151-162Publisher
ELSEVIER
DOI: 10.1016/j.jweia.2019.03.012
Keywords
Cumulant LBM; Turbulent flows; Urban air flow; GPGPU
Categories
Funding
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [GRK 2075]
- Department of Civil Engineering and Engineering Mechanics at Columbia University
- Swiss Federal Office for Education and Science [C00.0068]
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This work explores the feasibility of real-time large-eddy simulations of flow over urban canopies at the neighborhood scale. The cumulant lattice Boltzmann method is employed using a single General Purpose Graphic Processing Unit (GPGPU). In order to demonstrate the validity and efficiency of this approach we simulate wind flow in a neighborhood of Basel. Simulation results are validated against measurements from the Basel Urban Boundary Layer Experiment (BUBBLE) and are compared to previous CFD simulations. Turbulence statistics are found to be in agreement with corresponding tower measurements according to several validation metrics. While quantitative comparisons are limited to the six measurement locations of the field measurements, the available data supports the conjecture that real-time simulation of urban air flow is feasible at the neighborhood scale with the proposed numerical technique.
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