@article{(Open Science Index):https://publications.waset.org/pdf/10010748, title = {Numerical and Experimental Investigation of the Aerodynamic Performances of Counter-Rotating Rotors}, author = {Ibrahim Beldjilali and Adel Ghenaiet}, country = {}, institution = {}, abstract = {The contra-rotating axial machine is a promising solution for several applications, where high pressure and efficiencies are needed. Also, they allow reducing the speed of rotation, the radial spacing and a better flexibility of use. However, this requires a better understanding of their operation, including the influence of second rotor on the overall aerodynamic performances. This work consisted of both experimental and numerical studies to characterize this counter-rotating fan, especially the analysis of the effects of the blades stagger angle and the inter-distance between the rotors. The experimental study served to validate the computational fluid dynamics model (CFD) used in the simulations. The numerical study permitted to cover a wider range of parameter and deeper investigation on flow structures details, including the effects of blade stagger angle and inter-distance, associated with the interaction between the rotors. As a result, there is a clear improvement in aerodynamic performance compared with a conventional machine. }, journal = {International Journal of Mechanical and Mechatronics Engineering}, volume = {13}, number = {9}, year = {2019}, pages = {598 - 606}, ee = {https://publications.waset.org/pdf/10010748}, url = {https://publications.waset.org/vol/153}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 153, 2019}, }