CFDNet

From CFD-Wiki

CFDnet provides users with a free interactive Internet-based access to powerful server-side meshing, solving, and solution visualization routines for solving practical engineering problems in fluid flow. Users can access CFDnet through their web browsers using a Java user interface. No software downloads or plug-ins are required, and a free version of CFDnet is available. Want to know more about the CFDnet project? CFDnet is used in the undergraduate and graduate teaching of fluid mechanics.