Thanks guys for your reply.

Yes, it is a fluid ( Ideal gas). The engineering data is not only for structural analysis, but also can be used in thermal analysis, APDL, and others.I showed this method to my academic advisor and he said it worked. However, I still have some doubts because when I used the engineering data, I did not select any geometry to define in CFX as well as the material section in CFX did not show any sign that the materials are defined. So I am not sure. 


Could any body confirm this method? If this does not work, what are my other options? 


Thanks for help.