Plenary Keynote Title
Revisiting the verification and validation of turbomachinery CFD codes

Abtract:
There are mixed views regarding the accuracy and reliability of turbomachinery RANS CFD codes. Some believe they are sufficiently predictive and adequate enough to use them to perform flow mechanism analysis or even product designs; while others doubt CFD codes have contributed at all in the actual value creation process. The aircraft CFD community, however, has a much more converged view on their CFD tools. In this talk, I will share my understandings on how RANS CFD codes should be verified and validated, drawing experiences from the aircraft CFD community as well as the famous AGARD Report #335, and point on unique difficulties associated with turbomachinery flow simulations, supplemented by results and analysis from a recent V&V effort in our group using both in-house and commercial solvers on a wide range of external and internal flow test cases.