The Archimedes screw, a simple mechanical device invented by the Greek mathematician Archimedes (287-212 BC), is a device for raising water. It consists of a spiral chamber inside a close-fitting cylinder. In modern pump classification, the Archimedes screw is a positive displacement (PD) pump. FLUENT has been used successfully to simulate the mechanics of the Archimedes Screw as well as other PD pumps.

This animation shows the mesh of the screw and the geometry of the model being built using FLUENT
Click image to view animation