COLLOQUIUM 593
Plasma-based actuators for flow control: recent developments and future directions

14 March — 16 March 2018, Delft, The Netherlands

Final report

Dates and location

14 March — 16 March 2018, Delft, The Netherlands

Chairperson

Marios Kotsonis

Co-chairperson

Nico Benard

Conference fees

  • Early registration fee: 300.00 €
  • Late registration fee: 350.00 €
  • Accompanying person: 100.00 €

What other funding was obtained?

The venue was rented through internal funds of TU Delft

What were the participants offered?

3 days conference, including lunches and drinks/snacks

Applicants (members)

  1. Matteo Chiatto
  2. Kwing-So Choi
  3. Vasilis Ioannou
  4. Stepan Tolkachev
  5. Xin ZHANG

Applicants (non members)

  1. ATILLA ALTINTAS
  2. Roozbeh Aslani
  3. Marco Belan
  4. Nicolas Benard
  5. He Chengjun
  6. Thomas Corke
  7. Maria Grazia De Giorgi
  8. Aleksandr Firsov
  9. Kozo Fujii
  10. Berkant Göksel
  11. Zhengfei Guo
  12. Marc Hehner
  13. Harry Hoeijmakers
  14. Marios Kotsonis
  15. Jochen Kriegseis
  16. Viviana Lago
  17. Sergey Leonov
  18. Annie LEROY
  19. ZHENBO LU
  20. Takashi Matsuno
  21. Takayuki Matsunuma
  22. Theodoros Michelis
  23. Ivan Moralev
  24. Eric MOREAU
  25. Ricardo Pereira
  26. Andrey Starikovskiy
  27. Kun Tang
  28. Longjun Wang
  29. Chi Wai Wong
  30. Srikar Yadala Venkata
  31. Pengyu YANG
  32. Junkai Yao
  33. Haohua Zong

Scientific report

The meeting was well received and requests from many participants were expressed towards re-organising something similar.

The topics covered through the presentations were:

Characterisation of plasma-based actuators

Characterisation studies are essential towards elucidating the underlying physical processes governing the operation of plasma actuators. Additionally, they provide insight into the effect of operational parameters (geometry, materials, electrical power etc.) on the performance of the actuator. Contributions focused on recent characterisation studies, encompassing mechanical, electrical and thermal properties of plasma actuators.

Mechanical (thrust and velocity) measurements (AC-DBD, DC corona, spark)
Electrical (power, discharge regime, spectroscopy) (all types) characterisation studies
Thermal characterisation (spark, ns-DBD)
Body-force extraction techniques (AC-DBD, DC-corona)
Influence of ambient conditions on performance (all types)

Development of plasma-based actuators

By extending the basic morphology of the different types of plasma actuators, several variations have been proposed, towards improving or altering the performance. Novel concepts based on new materials, geometries, power supplies etc. have been proposed. Additionally, attention was given to aspects such as reliability, robustness, and manufacturing techniques, which might not affect the performance of the actuators but certainly enhance their industrial application potential.

New actuation concepts (configuration, geometry, waveforms, power supplies)
New materials (electrodes, dielectrics)
New manufacturing techniques (printed actuators, deposition techniques, materials)

Modelling of plasma-based actuators

Numerical and theoretical modelling of the operation of plasma actuators is necessary towards understanding the dynamic plasma formation processes. Additionally, simplified models of the actuators (i.e. body force distributions for AC-DBD actuators) are indispensable for the account of their effect in CFD simulations. Work presented under this topic focused on a wide range of models spanning from analytical or phenomenological to highly complex first-principles models, for all types of plasma-based actuators.

Analytical and phenomenological models
Hybrid models
First-principles models

Application of plasma-based actuators

Finally, plasma actuators are intended for active flow control. In this topic, focus was given on application cases in laboratory and industrial conditions. The session will be cover laboratory flow control objectives, such as lift enhancement or drag reduction. Additionally, industrial application efforts were presented.

Lift and drag control
Laminar-turbulent transition control
Turbulent flow control
Noise and jet control
Wind energy applications
Internal flow applications
Industrial application cases

Number of participants from each country

Country Participants
China 7
Netherlands 6
France 4
Germany 4
Italy 3
United States 3
Russia 3
Japan 3
United Kingdom 2
Sweden 1
Austria 1
Singapore 1
Total 38