Skip to main content
Article thumbnail
Location of Repository

A numerical study of laterally strained wall-bounded turbulence

By G.N. Coleman, D. Fedorov, P.R. Spalart and J. Kim


Direct numerical simulation (DNS) is used to study the effects of mean lateral divergence and convergence on wall-bounded turbulence, by applying uniform irrotational temporal deformations to a plane-channel domain. This extends a series of studies of similar deformations. Fast and slow straining fields are considered, leading to a matrix of four cases, all corresponding to zero-pressure-gradient (ZPG) flows along the centreplane in ducts with constant rectangular cross-sectional area but varying aspect ratio. The results are used to address basic physical and modelling questions, and create a database that allows detailed yet straightforward testing of turbulence models. Initial tests of three representative one-point models reveal meaningful differences. The extra-strain effects introduced by the matrix of fast and slow divergence and convergence are documented, separating the direct effects of the strain from the indirect ones that alter the shear rate and change the distance from<br/>the wall. Some findings are predictable, and none contradict experimental findings. Others require more thought, notably an asymmetry between the effect of convergence and divergence on the peak turbulence kinetic energy

Topics: QA, TL, QC
Year: 2009
OAI identifier:
Provided by: e-Prints Soton

Suggested articles


  1. (2000). A numerical study of strained three-dimensional wall-bounded turbulence. doi
  2. (1994). A one-equation turbulence model for aerodynamic flows. doi
  3. (2004). Assessment of common turbulence models for an idealized adverse pressure gradient flow. doi
  4. (1987). Boundary layers in planes of symmetry. Part I. Experiments in turbulent flow. doi
  5. (2003). Direct numerical simulation of a decelerated wall-bounded turbulent shear flow. doi
  6. (1993). Diverging boundary layers with zero streamwise pressure gradient and no wall curvature. doi
  7. (1990). Effects of extra rates of strain – review.
  8. (2009). Equilibrium turbulent boundary layers with lateral streamline convergence or divergence. doi
  9. (1991). Lateral straining of turbulent boundary layers. Part 1. Streamline divergence. doi
  10. (1997). Lateral straining of turbulent boundary layers. Part 2. Streamline convergence. doi
  11. (1993). Laterally strained turbulent boundary layers near a plane of symmetry. doi
  12. (1981). Numerical experiments in homogeneous turbulence.Tech.
  13. S m i t s ,A .J . ,E a t o n ,J .A .&B r a d s h a w ,P .1979 The response of a turbulent boundary layer to lateral divergence. doi
  14. (2007). Testing of Reynolds-stress-transport closures by comparison with DNS of an idealized adverse-pressure-gradient boundary layer. doi
  15. (1985). The response of turbulent boundary layers to sudden perturbations. doi
  16. (1998). Turbulence Modeling for CFD, 2nd edn. DCW Industries.
  17. (1987). Turbulence statistics in fully developed channel flow at low Reynolds number. doi
  18. (2000). Turbulent Flows. doi
  19. (1994). Two-equation eddy-viscosity turbulence models for engineering applications. doi

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.