Drag Reduction in Turbulent Boundary Layer via Flow Control

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Risultati finali

Report on optimization of operation of plasma actuators and on the experimental study of best technique implemented by a suitable spatial distribution of plasma DBD actuators
Report with Conclusions derived from analysis of data for Re(t) = 1020 for two actuation periods, one optimal and the other sub-optimal

Report with Conclusions derived from analysis of data for Re(t) = 1020 for two actuation periods, one optimal and the other sub-optimal

Report on DNS study of discretization effect of plasma actuators for experimental implementation of spanwise forcing
Report on the numerical study to assess performance of optimized sinuous riblets and of chevron riblets and on the numerical study to assess performance of undulated wall
Report on computational implementation of low-viscosity-fluid injection in combination with synthetic-jet actuation and on experimental studies of own control techniques, subject to input from DLR
Report on analysis of experimental a range of unsteady-jet actuation
Joint document for guidelines and recommendation to industrial designers to raise TRL on drag reduction technologies.
Development of new turbulence models for flow control drag reduction and on the performance of new turbulence models in practical flow control test cases of WP2-4
Report on Numerical and experimental comparison of results
Report on analysis of DNS and LES data without specific forcing of the outer structures
Report on the effectiveness of manipulating the outer structures using momentum and turbulence forcing in the outer layer
Report on experimental investigation of most promising technologies.
Synthetic Jet Actuation Measurement Data Flow field and skin friction measurement data and evaluation results for synthetic jet array flow actuation technique
Report on the effectiveness of adjoint methods for identifying the sensitivity of drag to outer-structure properties
Report by POLIMI on the effect of the computational domain on the drag reduction by spanwise forcing
Final assessment of drag reduction technologies in industrial configurations
Report on industrial specification of flow control devices
Report on the numerical study of plasma DBD actuators and on the numerical and experimental study of plasma DBD actuators
Report on LES for spanwise-oscillating synthetic jets pair including the actuator cavity and on DNS of spanwise-oscillating synthetic jets inducing a travelling wave
Report on comparative study of four techniques (StTW and SpTW, wall-based and body-force-based) carried out within the CPI framework. Report with performance achieved with the best strategy previously identified in external turbulent boundary layer flow

Report on comparative study of four techniques (StTW and SpTW, wall-based and body-force-based) carried out within the CPI framework. Report with performance achieved with the best strategy previously identified in external turbulent boundary layer flow.

Report on analysis on computation and experimental analysis and optimization.

Report on analysis on computation and experimental analysis and optimization. (Results arising from computations of synthetic-jet actuation in turbomachine flows, Report on computational optimisation of synthetic-jet actuation in external (airfoil) flows Report on experimental studies using computationally optimized jet-actuation configuration for external (airfoil) flows, Report on computational DES studies with NPU-optimized synthetic-jet in external (airfoil) flows)

Report on the application of new turbulence models in engine applications, Report on device optimization using the new turbulence models
Report on the numerical and experimental study of the tip and endwall deformations of turbomachinery blades and on the experimental study of grooves and riblets
Report on preliminary conclusions derived from the analysis of a database at Re(t) = 500 for two actuation periods, one optimal and the other sub-optimal

Report on preliminary conclusions derived from the analysis of a database at Re(t) = 500 for two actuation periods, one optimal and the other sub-optimal.

Report on validation of turbulence models for flow control: Comparison with experiments of WP2-3, Data analysis for turbulence models validation, Report on validation of turbulence models for flow control in engine applications
Report and measurement data of moving wall type flow actuation techniques

Pubblicazioni

Drag reduction via turbulent boundary layer flow control

Autori: Adel Abbas, Gabriel Bugeda, Esteban Ferrer, Song Fu, Jacques Periaux, Jordi Pons-Prats, Eusebio Valero, Yao Zheng
Pubblicato in: Science China Technological Sciences, Numero 60/9, 2017, Pagina/e 1281-1290, ISSN 1674-7321
Editore: Zhongguo Kexue Zazhishe/Science in China Press
DOI: 10.1007/s11431-016-9013-6

An entropy-variables-based formulation of residual distribution schemes for non-equilibrium flows

Autori: Jesús Garicano-Mena, Andrea Lani, Gérard Degrez
Pubblicato in: Journal of Computational Physics, Numero 362, 2018, Pagina/e 163-189, ISSN 0021-9991
Editore: Academic Press
DOI: 10.1016/j.jcp.2018.02.020

A new approximation to modulation-effect analysis based on empirical mode decomposition

Autori: A. Altıntaş, L. Davidson, S. H. Peng
Pubblicato in: Physics of Fluids, Numero 31/2, 2019, Pagina/e 025117, ISSN 1070-6631
Editore: American Institute of Physics
DOI: 10.1063/1.5079601

An enthalpy-preserving shock-capturing term for residual distribution schemes

Autori: J. Garicano-Mena, G. Degrez
Pubblicato in: International Journal for Numerical Methods in Fluids, Numero 88/8, 2018, Pagina/e 385-411, ISSN 0271-2091
Editore: John Wiley & Sons Inc.
DOI: 10.1002/fld.4672

Skewness-induced asymmetric modulation of small-scale turbulence by large-scale structures

Autori: Lionel Agostini, Michael Leschziner, Datta Gaitonde
Pubblicato in: Physics of Fluids, Numero 28/1, 2016, Pagina/e 015110, ISSN 1070-6631
Editore: American Institute of Physics
DOI: 10.1063/1.4939718

On the validity of the quasi-steady-turbulence hypothesis in representing the effects of large scales on small scales in boundary layers

Autori: Lionel Agostini, Michael Leschziner
Pubblicato in: Physics of Fluids, Numero 28/4, 2016, Pagina/e 045102, ISSN 1070-6631
Editore: American Institute of Physics
DOI: 10.1063/1.4944735

Predicting the response of small-scale near-wall turbulence to large-scale outer motions

Autori: Lionel Agostini, Michael Leschziner
Pubblicato in: Physics of Fluids, Numero 28/1, 2016, Pagina/e 015107, ISSN 1070-6631
Editore: American Institute of Physics
DOI: 10.1063/1.4939712

Multi-scale interactions in a compressible boundary layer

Autori: Lionel Agostini, Michael Leschziner, Jonathan Poggie, Nicholas J. Bisek, Datta Gaitonde
Pubblicato in: Journal of Turbulence, Numero 18/8, 2017, Pagina/e 760-780, ISSN 1468-5248
Editore: Institute of Physics Publishing
DOI: 10.1080/14685248.2017.1328108

Correlation-Based Transition Model for Swept-Wing Flow Using the Cross-Flow Reynolds Number

Autori: Wen Zhang, Peiqing Liu, Hao Guo
Pubblicato in: Journal of Aircraft, Numero 54/1, 2017, Pagina/e 359-366, ISSN 0021-8669
Editore: American Institute of Aeronautics and Astronautics
DOI: 10.2514/1.c033511

Control of stationary crossflow modes in swept Hiemenz flows with dielectric barrier discharge plasma actuators

Autori: Zhefu Wang, Liang Wang, Song Fu
Pubblicato in: Physics of Fluids, Numero 29/9, 2017, Pagina/e 094105, ISSN 1070-6631
Editore: American Institute of Physics
DOI: 10.1063/1.5001518

The Impact of Footprints of Large-Scale Outer Structures on the Near-Wall Layer in the Presence of Drag-Reducing Spanwise Wall Motion

Autori: Lionel Agostini, Michael Leschziner
Pubblicato in: Flow, Turbulence and Combustion, Numero 100/4, 2018, Pagina/e 1037-1061, ISSN 1386-6184
Editore: Kluwer Academic Publishers
DOI: 10.1007/s10494-018-9917-3

Reduction of turbulent boundary layer drag through dielectric-barrier-discharge plasma actuation based on the Spalding formula

Autori: Bin WU, Chao GAO, Feng LIU, Ming XUE, Yushuai WANG, Borui ZHENG
Pubblicato in: Plasma Science and Technology, Numero 21/4, 2019, Pagina/e 045501, ISSN 1009-0630
Editore: Institute of Plasma Physics
DOI: 10.1088/2058-6272/aaf2e2

Conditional Sampling and Wavelet Analysis in Early Stage of Step-Generated Transition

Autori: Wen Zhang, Peiqing Liu, Hao Guo
Pubblicato in: AIAA Journal, Numero 56/6, 2018, Pagina/e 2471-2477, ISSN 0001-1452
Editore: American Institute of Aeronautics and Astronautics
DOI: 10.2514/1.j056800

Optimization and Knowledge Discovery of a Three-Dimensional Parameterized Vane with Nonaxisymmetric Endwall

Autori: Liming Song, Zhendong Guo, Jun Li, Zhenping Feng
Pubblicato in: Journal of Propulsion and Power, Numero 34/1, 2018, Pagina/e 234-246, ISSN 0748-4658
Editore: American Institute of Aeronautics and Astronautics
DOI: 10.2514/1.b36014

The connection between the spectrum of turbulent scales and the skin-friction statistics in channel flow at

Autori: Lionel Agostini, Michael Leschziner
Pubblicato in: Journal of Fluid Mechanics, Numero 871, 2019, Pagina/e 22-51, ISSN 0022-1120
Editore: Cambridge University Press
DOI: 10.1017/jfm.2019.297

Multi-scale entropy analysis and conditional sampling of the velocity increment in a transitional boundary layer

Autori: Wen Zhang, Peiqing Liu, Hao Guo, Qiulin Qu
Pubblicato in: Communications in Nonlinear Science and Numerical Simulation, Numero 67, 2019, Pagina/e 303-313, ISSN 1007-5704
Editore: Elsevier BV
DOI: 10.1016/j.cnsns.2018.06.026

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