Problems on changing geometry inside a domain
 

What i am trying to do in my project is to build a rectangular size building in a domain, so thatni can further export to fluent for calculating and analysing. I have one file which has already completed, but i would like to obtain another set on data by changing the buildings dimension. However, when i tried to change the geometry, the blockings and mesh didnt change. Is there any way that i could change them easily or is it neccessary to change all of of them manually one by one?

It's parametric designing. You can do this in Ansys Workbench. Try to find some tutorials in the Internet.

Thank u very much. but is this ansys workbench with icem in one package?? As i am using my universities conputer, i wonder if they hv this function or not. Are there any other solutions?? BeSide is it possible to post some of the tutorials here? Thx a lot

In addition to my problem, When I tried to transform my geometry and mesh (a building with a taller height and located in different position in my domain), it leaves a mesh hole in my initial position, is there ant way to solve this problem? Can this be solved when i use ansys workbench?? Thank u very much and sorry for asking so many silly questions...im just a beginner...

Ansys Workbench is Ansys GUI in which you can combine all of Ansys "modes" in one place. Every version of Ansys above 12(?) has Ansys Workbench in it. Just try to find it in start menu. If your geometry is only one cube in some cubic domain it would be much easier to perform parametric modeling in Ansys Workbench than in ICEM CFD. For not so sophisticated geometry (in general) Ansys Workbench will be much more suitable than ICEM CFD.
For tutorials try to search google for "parametric modeling ansys".