Joint Seminar: Impacts of building arrangements on turbulent flows and heat transfer in urban surface boundary layers and development of a snowdrift model with the lattice Boltzmann method

We investigated the effects of the geometry and arrangement of buildings on turbulent flows and heat transport because several previous studies have not considered them in the numerical simulation which targeted a real urban area. Two business districts in Osaka City, Japan were chosen here for the analysis. We conducted several sensitivity experiments in which heat emission from buildings were varied by using a building-resolving large-eddy simulation model. It was found that the features of the momentum and heat transport from the urban sublayers depended on the building height, building density, and building-height variability. I also talk about the other topic of the developed snowdrift model. Snowdrift is a local accumulation of snow due to drifting snow events. Estimating wind flow around a surface is important to reproduce snowdrift distribution with a numerical simulation. We used the lattice Boltzmann method for simulating wind flow in our model. We demonstrated that the model could quantitatively reproduce the height and position of the observed snowdrift around a solid fence.




13:30–15:00 h


Bundesstr. 53, room 101/102
Seminar Room 101/102, 1st floor, Bundesstr. 53, 20146 Hamburg, Hamburg


Dirk Olonscheck
Divya Sri Praturi

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