This app is a simple simulator on mobile for 2D wind tunnel. The app simulates the flow of air around objects of arbitrary shape placed in the wind blowing from left to right. Air is treated as incompressible viscous fluid in the simulation.
After drawing objects in [Geometry] in Menu, go to [Simulation]. You will see the flow developing with the passage of time for the default parameters. If necessary, it is possible to interactively change the shape of objects and parameters at any time. Have fun.