This new lecture series will focus on the simulation and numerical modeling of multistage turbomachinery flow, covering both state-of-the-art techniques and recent trends in the analysis of design and off-design conditions, as well as their use in multidisciplinary design optimization.

The lecture series is directed by Prof. Frank Eulitz and Prof. Marcello Manna.

Topics Covered:

• Scale-Resolved Simulations: High-fidelity modeling techniques and their application.
• Turbulence and Transition Modeling: Understanding and managing transitional and turbulent flows in multistage turbomachinery configurations.
• Mixing Plane Models, Time-resolved & Fourier Methods: Different approaches for different demands
• Boundary Conditions for Turbomachinery Flows: Understanding their role on the solution.
• Convergence Measurement & CFD Validation: Ensuring reliable and robust results.
• The lecture team includes globally recognized experts from academia and industry, offering deep expertise in these areas.

Benefits of Attending:

• Expert Knowledge: Gain insights from leading professionals in the field
• Industry Insights: Learn about the latest advancements in commercial turbomachinery CFD packages and industry applications.
• Networking: Connect with CFD developers, advanced practitioners, and researchers.
• This lecture series is designed for turbomachinery CFD developers and advanced practitioners in both industry and research.
• 2.0 ECTS transfer for university students participating onsite is possible upon request. The evaluation is carried out via an oral examination

Programme

Monday 30 June 2025: Introduction, SRS, turbulence modelling

08:30 - 09:00 Registration

09:00 - 10:15 Welcome to VKI and introduction to the LS
Prof. Frank Eulitz, VKI, Belgium, Prof. Marcello Manna, University of Naples, Italy

10:15 - 10:30 Coffee break

10:30 - 11:45 Introduction to scale-resolved simulations (SRS)
Prof. Richard Sandberg, University of Melbourne, Australia

11:45 - 12:45 Industry Impulse presentation
 to be announced

12:45 - 14:00 Lunch

14:00 - 15:15 Current state-of-the-art of blade and stage-level simulations
Prof. Richard Sandberg, University of Melbourne, Australia

15:15 - 15:45 Coffee break

15:45 - 17:00 Turbulence modelling from RANS to DES to LES, part 1
Dr. Philippe Spalart, Fluid Sciences Director, Flexcompute, USA

17:00 Reception

Tuesday 1 July 2025: High-order discretization, turbulence modelling

09:00 - 10:15 Principles of high-order unstructured discretization techniques for scale-resolving simulations, part 1
Prof. Koen Hillewaert, University of Liège, VKI, Belgium

10:15 - 10:30 Coffee break

10:30 - 11:45 Principles of high-order unstructured discretization techniques for scale-resolving simulations, part 2
Prof. Koen Hillewaert, University of Liège, VKI, Belgium

11:45 - 12:45 Industry Impulse presentation
Flexcompute, USA

12:45 - 14:00 Lunch

14:00 - 15:15 Transition modelling for URANS and DES
Prof. Sławomir Kubacki, Warsaw University of Technology, Poland

15:15 - 15:45 Coffee break

15:45 - 17:00 Turbulence modelling from RANS to DES to LES, part 2
Dr. Philippe Spalart, Fluid Sciences Director, Flexcompute, USA

17:00 - 18:00 VKI Facility tour

Wednesday 2 July 2025: Two-scale & Fourier methods, boundary conditions

09:00 - 10:15 Two-scale methods for LES / URANS
Prof. Li He, University of Oxford, United Kingdom

10:15 - 10:30 Coffee break

10:30 - 11:45 Fourier methods for turbomachinery
Prof. Li He, University of Oxford, United Kingdom

11:45 - 12:45 Impulse presentation: Machine learning for turbulence modeling
Prof. Richard Sandberg, University of Melbourne, Australia

12:45 - 14:00 Lunch

14:00 - 15:15 Boundary conditions for steady-state and time resolved turbomachinery flow simulations
Dr. Christian Frey, DLR, German Aerospace Center, Germany

15:15 - 15:45 Coffee break

15:45 - 17:00 Mixing plane models for multistage applications
Dr. Graham Ashcroft, Dr. Christian Frey, DLR, German Aerospace Center, Germany

Thursday 3 July 2025: Harmonic balance methods, whole-engine SRS applications, conjugate heat transfer

09:00 - 10:15 Harmonic balance methods for multistage analysis
Dr. Graham Ashcroft, DLR, German Aerospace Center, Germany

10:15 - 11:00 Coffee break

11:00 - 11:45 SRS applications of unsteady turbomachinery flows
Dr. Laurent Gicquel, CERFACS, France

11:45 - 12:45 Industry Impulse presentation
to be announced

12:45 - 14:00 Lunch

14:00 - 15:15 Whole-engine scale-resolved simulation
Dr. Laurent Gicquel, CERFACS, France

15:15 - 15:45 Coffee break

15:45 - 17:00 LES-CHT for smooth and micro-structured walls
Prof. Li He, University of Oxford, United Kingdom

Friday 4 July 2025: Optimization methods

09:00 - 10:15 Introduction to shape-optimization
Prof. Tom Verstraete, VKI, Belgium

10:15 - 10:30 Coffee break

10:30 - 11:45 Multi-disciplinary optimization
Prof. Tom Verstraete, VKI, Belgium

11:45 - 12:45 Industry Impulse presentation
to be announced

12:45 - 14:30 Lunch

14:00 Closure roundtable: Outlook of Turbomachinery CFD 2035
Prof. Frank Eulitz, VKI, Belgium, Prof. Marcello Manna, University of Naples, Italy