I will preface this with the fact that I am not a physicist...I am an engineer by trade. I am working on a research problem that will involve flight of an organism with varying shapes, and I am interested in finding an open-source environment that successfully models the varying forces and whatnot found in the atmosphere.
Basically, I want to create a 3D representation of my flyer and put it into an environment and be able to have natural forces act upon it (to see how it reacts).
Does such a beast exist?