CFD might be considered as virtual laboratory which gives you an opportunity to test, optimize and make project more efficient. CFD reproduce real aerodynamics conditions, just like in aerodynamic tunnel with only this exception that all test are done in the memory of computer. The main result of that type of analysis are data describing fluid flow, such as velocity field, temperature field. There are many advantage for CFD comparing physical test. Numerical process is not limited by measuring points or cameras which record physical process during test procedure. It means that you can “look inside” the process, observe and measure physical parameters in every point of fluid flow.