Skip to main content
Top

2019 | OriginalPaper | Chapter

DNS of Separated Flow: Scale-by-Scale Analysis

Authors : J.-P. Mollicone, F. Battista, P. Gualtieri, C. M. Casciola

Published in: Direct and Large-Eddy Simulation XI

Publisher: Springer International Publishing

Activate our intelligent search to find suitable subject content or patents.

search-config
loading …

Abstract

The Direct Numerical Simulation (DNS) of a turbulent channel containing a bump is carried out to study the turbulence dynamics in the separated region. Our study is intended to fill the gap among the idealised conditions, e.g. plane channel flows typically addressed in literature and the actual flow geometries where the effects of wall curvature and the presence of bluff bodies immediately generate a substantial separated flow region in the bulk of the flow and produce turbulent wakes behind the bluff body. Such configuration allows retaining, with the minimum level of complexity, all the basic features of separated wall-bounded flows such as the presence of the recirculating region that acts as the main energy source for the turbulent velocity fluctuations in the bulk of the flow and in the wake behind the bump.

Dont have a licence yet? Then find out more about our products and how to get one now:

Springer Professional "Wirtschaft+Technik"

Online-Abonnement

Mit Springer Professional "Wirtschaft+Technik" erhalten Sie Zugriff auf:

  • über 102.000 Bücher
  • über 537 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Finance + Banking
  • Management + Führung
  • Marketing + Vertrieb
  • Maschinenbau + Werkstoffe
  • Versicherung + Risiko

Jetzt Wissensvorsprung sichern!

Springer Professional "Technik"

Online-Abonnement

Mit Springer Professional "Technik" erhalten Sie Zugriff auf:

  • über 67.000 Bücher
  • über 390 Zeitschriften

aus folgenden Fachgebieten:

  • Automobil + Motoren
  • Bauwesen + Immobilien
  • Business IT + Informatik
  • Elektrotechnik + Elektronik
  • Energie + Nachhaltigkeit
  • Maschinenbau + Werkstoffe




 

Jetzt Wissensvorsprung sichern!

Literature
2.
go back to reference Thiesset, F., Danaila, L., Antonia, R.A.: A look at the turbulent wake using scale-by-scale energy budgets. Fluid-Struct.-Sound Interact. Control (2014) Thiesset, F., Danaila, L., Antonia, R.A.: A look at the turbulent wake using scale-by-scale energy budgets. Fluid-Struct.-Sound Interact. Control (2014)
3.
go back to reference Cambon, C., Gréa, B.-J.: The role of directionality on the structure and dynamics of strongly anisotropic turbulent flows. J. Turbul. 14, 50–71 (2013)MathSciNetCrossRef Cambon, C., Gréa, B.-J.: The role of directionality on the structure and dynamics of strongly anisotropic turbulent flows. J. Turbul. 14, 50–71 (2013)MathSciNetCrossRef
4.
go back to reference Casciola, C.M., Gualtieri, P., Benzi, R., Piva, R.: Scale-by-scale budget and similarity laws for shear turbulence. J. Fluid Mech. 476, 105–114 (2003) Casciola, C.M., Gualtieri, P., Benzi, R., Piva, R.: Scale-by-scale budget and similarity laws for shear turbulence. J. Fluid Mech. 476, 105–114 (2003)
5.
go back to reference Marati, N., Casciola, C.M., Piva, R.: Energy cascade and spatial fluxes in wall turbulence. J. Fluid Mech. 521, 191–215 (2004)MathSciNetCrossRef Marati, N., Casciola, C.M., Piva, R.: Energy cascade and spatial fluxes in wall turbulence. J. Fluid Mech. 521, 191–215 (2004)MathSciNetCrossRef
6.
go back to reference Cimarelli, A., Angelis, E.D., Casciola, C.M.: Paths of energy in turbulent channel flows. J. Fluid Mech. 715, 436–451 (2013)MathSciNetCrossRef Cimarelli, A., Angelis, E.D., Casciola, C.M.: Paths of energy in turbulent channel flows. J. Fluid Mech. 715, 436–451 (2013)MathSciNetCrossRef
7.
go back to reference Mollicone, J.-P., Battista, F., Gualtieri, P., Casciola, C.: Energy fluxes in turbulent separated flows. J. Phys.: Conf. Ser. (IOP Publishing) 759, 012003 (2016) Mollicone, J.-P., Battista, F., Gualtieri, P., Casciola, C.: Energy fluxes in turbulent separated flows. J. Phys.: Conf. Ser. (IOP Publishing) 759, 012003 (2016)
8.
go back to reference Mollicone, J.-P., Battista, F., Gualtieri, P., Casciola, C.: Effect of geometry and Reynolds number on the turbulent separated flow behind a bulge in a channel. J. Fluid Mech. 823, 100–133 (2017)MathSciNetCrossRef Mollicone, J.-P., Battista, F., Gualtieri, P., Casciola, C.: Effect of geometry and Reynolds number on the turbulent separated flow behind a bulge in a channel. J. Fluid Mech. 823, 100–133 (2017)MathSciNetCrossRef
9.
go back to reference Fischer, P., Lottes, J.W., Kerkemeier, S.G.: Nek5000 - open source spectral element CFD solver. Argonne National Laboratory, Mathematics and Computer Science Division, Argonne, IL (2008). http://nek5000.mcs.anl.gov Fischer, P., Lottes, J.W., Kerkemeier, S.G.: Nek5000 - open source spectral element CFD solver. Argonne National Laboratory, Mathematics and Computer Science Division, Argonne, IL (2008). http://​nek5000.​mcs.​anl.​gov
10.
go back to reference Patera, A.T.: A spectral element method for fluid dynamics. J. Comput. Phys. 54, 468–488 (1984)CrossRef Patera, A.T.: A spectral element method for fluid dynamics. J. Comput. Phys. 54, 468–488 (1984)CrossRef
Metadata
Title
DNS of Separated Flow: Scale-by-Scale Analysis
Authors
J.-P. Mollicone
F. Battista
P. Gualtieri
C. M. Casciola
Copyright Year
2019
DOI
https://doi.org/10.1007/978-3-030-04915-7_63

Premium Partners