Review of CFD methods for turbomachinery
The objective is to provide some basics about the numerical simulation of unsteady complex flow in turbomachinery; both for compressors and turbines components. The first part is dedicated to a review of the flow physics that take place in turbomachines (rotor/stator intercations, aerodynamics instabilities, aero-elasticity, turbulence, etc.), providing some guidelines to help designers and scientists to understand and predict these flows. The second part proposes a review of existing methods to compute the flow in these components. State-of-the-art techniques are presented: RANS and LES modeling, harmonic balance technique, etc. Some other emergent techniques (uncertainty quantification, multiphysics and multi-codes simulations) are also discussed.
| Target participants:
This training session is for engineers, physicists, computer and numerical analysts. Prerequisites: Basic knowledges in the field of CFD as well as fluid mechanics. Scientific contact: Nicolas GOURDAIN Fee: - Public: 900 € - CERFACS shareholders/CNRS/INRIA: 450 € - Students: 150 € |
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| Program |
| (Every day from 9h to 17h30) |
| Turbomachinery flow physics |
| • Basics about turbomachinery: operating point, performance characteristics, surge line, etc |
| • Review of flow phenomena: rotor/stator interactions, wakes and potential effects, transonic flows, aeroelastics phenomema, unsteable behavior ( surge and rotating stall), aero-thermics. |
| Numerical methods |
| • Basics abut RANS and LES modeling |
| • Steady flow simulation: mixing plane technique |
| • Unsteady flow simulation: phase-lagged method, sliding mesh, Harmonic Balance Technique |
| • Multiphysics : aero-elasticity, conjugate heat transfer |
| • RANS/LES code coupling |
| • Methods for uncertainty quantifications. |
| • Unstructured and structured approach comparison |
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