I am attempting to simulate the wind load on a building. I would like to know the pressure on the cladding of the building. The project is here: [image] Wind load on building by stu_crawford | SimScale Calculating wind load on the cladding of a building | Simulation project by stu_craw…

Hey @stu_crawford ! The discretization looks quite okay to me :thinking: Did you start a convergence study so far? Tagging the @cfd_squad for more ideas here. Cheers! Jousef

Thanks @jousefm ! I just ran the simulation with a more detailed mesh. When I ran the simulation with a simple mesh, the convergence plot residuals were much better using the numerics from the Bank of China Tower simulation compared to the default numerics, so I used those numerics for the simulati…

The wind load from a south wind makes intuitive sense, with positive pressures on the wall facing the wind, and negative pressures in the lee of the building. The magnitude of the forces are similar to what would be predicted from the building codes. Pressures are shown below. [100 kph south win…

[image] stu_crawford: However, the results from a north wind don’t make sense. Even the vertical wall facing into the wind has substantial negative pressures. Every part of the building has negative pressure Picked by curiosity I did a particle trace on your Northwest simulation and it looks…

Thanks @Retsam ! I’m new to simscale, and didn’t realize that the particle trace was an option. I played around with it a bit, it is very neat! Very useful to help understand what is happening. But what is the second screenshot that you provided? It also looks very useful, and I couldn’t figure …

[image] stu_crawford: But what is the second screenshot that you provided? It also looks very useful, and I couldn’t figure out how to create it. So far, so good. For second screen shot, I suggest you use it systematically to spot wind directions in a plane. Use ‘Cutting plane’ and move it…

Wind load on building

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Retsam September 1, 2020, 9:11pm 5

Picked by curiosity I did a particle trace on your Northwest simulation and it looks normal:

Perhaps you fixed already the simulation setup (like re-setting velocity inlet / pressure outlet)?

Take care,

Retsam

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