Research activities cover the following subjects :

Computational Fluid Dynamic methods (CFD) for internal and external flows,  Internal flows in turbomachinery，Turbulence modelling，Aerodynamic research in aerospace ，Experimental investigations on turbulence，Experimental wind engineering and wind effects on buildings，Development of wind energy systems，Simulation of bio-fluid dynamics systems, 

Prof. Ch. Hirsch is heavily involved in many national and European R & D projects, in particular he is coordinating current projects on: Combustion modelling –project COMBINA；On uncertainty quantification and non-deterministic methodologies in CFD: project NODESIM-CFD；Two projects on acoustics of counter-rotating open rotors: DINNO-CROR and CAA-NLH

Prof; Ch. Hirsch is involved in several past and present projects related to EU-China collaborations: Aerochina I and II, during the periods 2005-2009；

The new project GRAIN, a follow-up of AEROCHINA；The R&Dproject MARS oriented at flow control