In the second demo project using AccuCities 3D city model, SimScale has used the Free 3D model of Bristol sample to illustrate its capabilities. SimScale platform can help engineers and architects planning new developments in Bristol, United Kingdom. It enables its users to quickly assess pedestrian wind comfort and safety.
The project is also a great illustration of how anybody can test their methodology using a free 3D city model from AccuCities samples.
Cloud-based Wind comfort studies for developments in Bristol
“We are really pleased to work with SimScale.”, said Michal Konicek from AccuCities. “Of course there are different ways to assess these requirements, but because SimScale is cloud-based, it is possible to assess a development in a wide city area without the need for an expensive hardware. Where speed of delivery is required, customers can even run multiple simulation scenarios in parallel.”
“These results show us a lot about accuracy, run time and our default assumptions.” says Darren Lynch, CFD Application Engineer at SimScale GmbH. “Firstly, the default value of 3 fluid passes is almost perfectly identical to 6 fluid passes, therefore, little evidence that running the additional time at a 100% additional run time cost will be worth while. Secondly, 3 passes is very similar to 2 passes, and therefore, if you are doing some early stage analysis you could run 2 passes at a cost reduction of 33%, but the user should be wary that they need to be looser in their analysis conclusions. Finally, it is observed that 1 fluid pass shows significant inaccuracies across most of the line, and should not be considered as a viable option despite reducing cost at a rate of 66% from the default value.”