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Ramis Örlü

Ramis Örlü

Job title
  • Professor
Visiting address
  • Pilestredet 35, 0166 Oslo
  • Office number: PH530
Phone
  • Mobile: +46 762 16 526 3
  • Office: +47 672 36 142
E-mail
  • ramis.orlu@oslomet.no
Affiliation

About

Ramis Örlü obtained an engineering degree (Dipl.-Ing.) in mechanical engineering from Ruhr University Bochum, Germany, in 2003, followed by a Ph.D. in engineering mechanics with a focus on experimental fluid dynamics and turbulence at KTH Royal Institute of Technology, Sweden, in 2009. In 2015, he was appointed docent in experimental fluid physics at KTH and has held an adjunct professorship at the University of Bologna since 2017. In 2023, he joined OsloMet – Oslo Metropolitan University, Norway, as an associate professor in fluid mechanics and became a full professor at the same institution in 2024. Over the years, he has held fellowships and guest professorships at Karlsruhe Institute of Technology (KIT), Germany; Friedrich-Alexander-Universität (FAU) Erlangen, Germany; and the Turkish-German University in Istanbul, Turkey.

His research is centered on both fundamental and industrial aspects of turbulent flows, with an emphasis on skin-friction and drag reduction through passive and active control techniques. He has extensive experience using large-scale wind tunnel facilities and advanced measurement methods, as well as close interactions with high-fidelity simulations to cross-validate experiments and simulations. He is also Editor-in-Cief of Experimental Thermal and Fluid Science, a member of the Editorial Advisory Board for Flow, Turbulence and Combustion and Advances in Aerodynamics, and serves as a co-editor of the Progress in Turbulence series.

Field of study

Fluid mechanics   Measurement techniques   Turbulence   Experimental Fluid Dynamics   Aerodynamics

Administrative field of work

Master programmes   Erasmus+   Internationalisation   Exchange and mobility

Research groups

Publications and research

Scientific publications

Hajipour, Majid; Schlatter, Philipp; Örlü, Ramis (2025). Experimental investigation of the turbulent boundary-layer footprint on the wake of a wing section. Physics of Fluids. Vol. 37.
https://doi.org/10.1063/5.0304581

Mallor, F.; Örlü, Ramis ; Schlatter, P. (2025). Spatial Averaging Effects in Adverse Pressure Gradient Turbulent Boundary Layers. Flow Turbulence and Combustion.
https://doi.org/10.1007/s10494-024-00568-w

Örlü, Ramis ; Talamelli, A.; Peinke, J.; Oberlack, M. (2024). Progress in Turbulence X. Proceedings of the iTi Conference in Turbulence 2023. ISBN: 9783031559242. 343 p. Springer Nature.
https://hdl.handle.net/11250/4558278

Foschi, E.; Örlü, Ramis ; Talamelli, A.; Schlatter, P. (2024). On intermittency of the turbulent asymptotic suction boundary layer. Örlü, Ramis; Talamelli, A.; Peinke, J.; Oberlack, M. (Ed.). Progress in Turbulence X. Proceedings of the iTi Conference in Turbulence 2023. p. 275-280. Springer Nature.
https://doi.org/10.1007/978-3-031-55924-2_37

Dróżdż, A.; Örlü, Ramis ; Sokolenko, V.; Schlatter, P.; Elsner, W.; Niegodajew, P. (2024). Hot-wire spatial resolution issues in adverse pressure gradient turbulent boundary layers. Measurement. Vol. 237.
https://doi.org/10.1016/j.measurement.2024.115229

Mallor, F.; Vila, C. Sanmiguel; Hajipour, M.; Vinuesa, R.; Schlatter, P.; Örlü, Ramis (2024). Experimental characterization of turbulent boundary layers around a NACA 4412 wing profile. Experimental Thermal and Fluid Science. Vol. 160.
https://doi.org/10.1016/j.expthermflusci.2024.1113

Lupi, V.; Canton, J.; Rinaldi, E.; Örlü, Ramis ; Schlatter, P. (2024). Modal stability analysis of toroidal pipe flow approaching zero curvature. Journal of Fluid Mechanics. Vol. 987.
https://doi.org/10.1017/jfm.2024.324

Frohnapfel, B.; Deyn, L. H. von; Yang, J.; Neuhauser, J.; Stroh, A.; Örlü, Ramis ; Gatti, D. (2024). Flow resistance over heterogeneous roughness made of spanwise-alternating sandpaper strips. Journal of Fluid Mechanics. Vol. 980.
https://doi.org/10.1017/jfm.2024.40

Mallor, F.; Vinuesa, R.; Örlü, Ramis ; Schlatter, P. (2024). High-fidelity simulations of the flow around a NACA 4412 wing section at high angles of attack. International Journal of Heat and Fluid Flow. Vol. 110.
https://doi.org/10.1016/j.ijheatfluidflow.2024.109

Pasch, S.; Leister, R.; Gatti, D.; Örlü, Ramis ; Frohnapfel, B.; Kriegseis, J. (2023). Measurements in a Turbulent Channel Flow by Means of an LDV Profile Sensor. Flow Turbulence and Combustion.
https://doi.org/10.1007/s10494-023-00469-4



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These publications are obtained from Norwegian Research Information Repository. The list may be incomplete.

Research reports

Örlü, Ramis (2009). Experimental studies in jet flows and zero pressure-gradient turbulent boundary layers. ISBN: 9789174153699. 325 p. KTH Royal Institute of Technology.
https://hdl.handle.net/11250/3888085



These publications are obtained from Norwegian Research Information Repository. The list may be incomplete.

Dissemination

Örlü, Ramis ; Schlatter, Philipp (2025). Editorial of Special Issue (SI) on “Large-scale control of wall-bounded flow”. International Journal of Heat and Fluid Flow.
https://doi.org/10.1016/j.ijheatfluidflow.2025.109

Sujar-Garrido, P.; Schmidt, C.; Frohnapfel, B.; Örlü, Ramis (2024). Hot-wire measurements in the near-wake of a 3D bluff body. 1st European Fluid Dynamics Conference (EFDC1). Euromech.
https://hdl.handle.net/11250/3308435

Dróżdż, A.; Örlü, Ramis ; Niegodajew, P.; Sokolenko, Vladislav; Schlatter, P.; Elsner, W. (2023). Hot-wire spatial resolution effects in adverse-pressure-gradient turbulent boundary layers. Proc. 14th Int. ERCOFTAC Symp. on Engineering, Turbulence, Modeling and Measurements (ETMM14).
https://hdl.handle.net/11250/4869987

Sujar-Garrido, P.; Schmidt, C.; Frohnapfel, B.; Örlü, Ramis (2023). A hot-wire anemometry guide on where to or not to measure. 18th EUROMECH European Turbulence Conference. EUROMECH.
https://hdl.handle.net/11250/5031035

Rius-Vidales, A. F.; Örlü, Ramis ; Sujar-Garrido, P.; Kotsonis, M. (2023). On the characterization of the boundary-layer flow on a rotating slender cone using PIV. 76th Annual Meeting of the Division of Fluid Dynamics. APS.
https://hdl.handle.net/11250/4069057

Mallor, F.; Vila, C. Sanmiguel; Vinuesa, R.; Örlü, Ramis ; Schlatter, P. (2022). Adverse pressure gradient effects on the turbulent boundary layer around a NACA 4412 wing profile: an experimental investigation. 14th European Fluid Mechanics Conference. EUROMECH.
https://hdl.handle.net/11250/3802879

Lupi, V.; Örlü, Ramis ; Schlatter, P. (2022). On the origin of swirl-switching in 90∘-bend pipe flow. 14th European Fluid Mechanics Conference. EUROMECH.
https://hdl.handle.net/11250/3260369

Sujar-Garrido, P.; Örlü, Ramis (2022). Plasma vortex generators used for separation control and drag reduction on a bluff body. European Drag Reduction and Flow Control Meeting (EDRFCM).
https://hdl.handle.net/11250/3544364

Pasch, S.; Gatti, D.; Leister, R.; Frohnapfel, B.; Kriegseis, J.; Örlü, Ramis (2022). Measurement in a turbulent channel flow by means of an LDV profile sensor. European Drag Reduction and Flow Control Meeting (EDRFCM).
https://hdl.handle.net/11250/3428801

Lupi, V.; Canton, J.; Rinaldi, E.; Örlü, Ramis ; Schlatter, P. (2022). Modal stability analysis of toroidal pipe flow approaching zero curvature. 14th ERCOFTAC SIG 33 Workshop, Progress in Flow Instability, Transition and Control. ERCOFTAC.
https://hdl.handle.net/11250/4108036



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These publications are obtained from Norwegian Research Information Repository. The list may be incomplete.
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