The dwelling is situated at the end of a south-facing urban funnel. Perhaps because of this, the resident experiences present vortices that cause dust and dirt from the surrounding environment and roofs to constantly blow in. The whirlwinds hinder pleasant ventilation of the dwelling and also introduce noise. It is up to the students to find out whether the nuisance is actually caused by these whirlwinds and how the nuisance can be prevented. Would you like to help solve this problem? Then sign up!