meshing around a 3D airfoil
 

Please help. I have been trying to learn how to mesh a 3D airfoil for the past several months. I have imported the iges file, created a block around the blade, meshed all faces, subtracted the airfoil from the block, but when I go to mesh the volume, I am running into major difficulties. How can I get a fine mesh around the blade and have it expand into a course mesh far away. Any suggestions would be helpful, as my research is kind of at a stand still. please feel free to email me with any suggestions. pmcphers@purdue.edu
thanks.

Paul