Comparison of Chimera and Sliding Mesh Techniques for Unsteady Simulations of Counter Rotating Open-Rotors

摘要

Due to the growing interest from engines and airliners manufacturers for Counter Rotating Open-Rotors, lots of efforts are presently devoted in the development of reliable CFD methodologies. This paper compares two techniques, namely chimera and sliding mesh, enabling 360° moving propeller mesh into airframe fixed mesh used for unsteady CROR simulations. The assessment of these techniques is a major step in the development of dedicated numerical techniques and remains to be achieved.