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From 15 May 2017 to 17 May 2017

Review of CFD methods for turbomachinery

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Cancelled
Deadline for registration: 15 days before the starting date of each training
Duration : 3 days / (21 hours)

Pre-registration

 

Abstract

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 : Florent DUCHAINE & Laurent GICQUEL

Fee

  • Trainees/PhDs/PostDocs : 150 €
  • CERFACS shareholders/CNRS/INRIA : 450 €
  • Public : 900 €

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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