I am doing my theses in simulation of flow in gas turbine (the flow between the blades ), and I am looking for experimental data of the flow in the turbine. Could any body point to me the direction where can I find that?

There are a number of well documented test cases for the ERCOFTAC workshop on Turbomachinery Flow Predictions - See the announcement made in this forum a week or so ago, it also includes a link to their web page I think. The advantage with using these test cases is that you have the opportunity to meet with other colleagues working on the same cases and compare results and exchange ideas.

They also publish some kind of report from the workshop each year, so even if you don't attend the workshop you can read about problems etc. that other groups had with the different cases.