Extension of an algebraic intermittency model for better prediction of transition in separated layers under strong free-stream turbulence
- Author
- S. Kubacki, D. Simoni, D. Lengani, M. Dellacasagrande and Erik Dick (UGent)
- Organization
- Abstract
- A constitutive law describing the Reynolds stresses in boundary layers undergoing laminar-to-turbulent transition, constructed in previous work by elastic-net regression on an experimental data base, is used to improve an algebraic transition model for cases with transition in a separated layer influenced by a high level of free-stream turbulence. The basic transition model is extended by an additional production term in the transport equation for turbulent kinetic energy. A sensor detects the front part of a separated layer and activates the production term, which expresses the faster breakdown by the effect of the Klebanoff streaks generated upstream of separation on the Kelvin-Helmholtz instability rolls in the separated part of the layer.
- Keywords
- laminar-to-turbulent boundary layer transition, transition modelling, algebraic intermittency model, separation-induced transition, BOUNDARY-LAYER, BYPASS TRANSITION, BUBBLES, VERSION
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Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-8727933
- MLA
- Kubacki, S., et al. “Extension of an Algebraic Intermittency Model for Better Prediction of Transition in Separated Layers under Strong Free-Stream Turbulence.” INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, vol. 92, 2021, doi:10.1016/j.ijheatfluidflow.2021.108860.
- APA
- Kubacki, S., Simoni, D., Lengani, D., Dellacasagrande, M., & Dick, E. (2021). Extension of an algebraic intermittency model for better prediction of transition in separated layers under strong free-stream turbulence. INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, 92. https://doi.org/10.1016/j.ijheatfluidflow.2021.108860
- Chicago author-date
- Kubacki, S., D. Simoni, D. Lengani, M. Dellacasagrande, and Erik Dick. 2021. “Extension of an Algebraic Intermittency Model for Better Prediction of Transition in Separated Layers under Strong Free-Stream Turbulence.” INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW 92. https://doi.org/10.1016/j.ijheatfluidflow.2021.108860.
- Chicago author-date (all authors)
- Kubacki, S., D. Simoni, D. Lengani, M. Dellacasagrande, and Erik Dick. 2021. “Extension of an Algebraic Intermittency Model for Better Prediction of Transition in Separated Layers under Strong Free-Stream Turbulence.” INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW 92. doi:10.1016/j.ijheatfluidflow.2021.108860.
- Vancouver
- 1.Kubacki S, Simoni D, Lengani D, Dellacasagrande M, Dick E. Extension of an algebraic intermittency model for better prediction of transition in separated layers under strong free-stream turbulence. INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW. 2021;92.
- IEEE
- [1]S. Kubacki, D. Simoni, D. Lengani, M. Dellacasagrande, and E. Dick, “Extension of an algebraic intermittency model for better prediction of transition in separated layers under strong free-stream turbulence,” INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW, vol. 92, 2021.
@article{8727933, abstract = {{A constitutive law describing the Reynolds stresses in boundary layers undergoing laminar-to-turbulent transition, constructed in previous work by elastic-net regression on an experimental data base, is used to improve an algebraic transition model for cases with transition in a separated layer influenced by a high level of free-stream turbulence. The basic transition model is extended by an additional production term in the transport equation for turbulent kinetic energy. A sensor detects the front part of a separated layer and activates the production term, which expresses the faster breakdown by the effect of the Klebanoff streaks generated upstream of separation on the Kelvin-Helmholtz instability rolls in the separated part of the layer.}}, articleno = {{108860}}, author = {{Kubacki, S. and Simoni, D. and Lengani, D. and Dellacasagrande, M. and Dick, Erik}}, issn = {{0142-727X}}, journal = {{INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW}}, keywords = {{laminar-to-turbulent boundary layer transition,transition modelling,algebraic intermittency model,separation-induced transition,BOUNDARY-LAYER,BYPASS TRANSITION,BUBBLES,VERSION}}, language = {{eng}}, pages = {{16}}, title = {{Extension of an algebraic intermittency model for better prediction of transition in separated layers under strong free-stream turbulence}}, url = {{http://doi.org/10.1016/j.ijheatfluidflow.2021.108860}}, volume = {{92}}, year = {{2021}}, }
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