Skip to main content

Particle transport in a turbulent boundary layer: Non-local closures for particle dispersion tensors accounting for particle-wall interactions

Publication ,  Journal Article
Bragg, A; Swailes, DC; Skartlien, R
Published in: Physics of Fluids
October 3, 2012

Continuum equations derived from a probability density function kinetic equation contain dispersion tensors that describe the interaction between inertial particles and the underlying turbulent flow in which they are transported. These tensors require closure treatment and recent work has shown that traditional closure approximations perform poorly when applied to the case of particle dispersion in turbulent boundary layers. The dispersion tensors are intrinsically non-local, being sensitive to both the strong inhomogeneity of wall-bounded turbulence and the influence of particle-wall collisions. A new strategy for constructing non-local closure models is presented to account for such influences. An important feature of the approach is that it utilizes exactly the same input parameters required for the traditional closures. Differences between the two approaches are therefore a reflection of the improved closure strategy, rather than a consequence of improved or additional input data. Predictions from both new and standard models are compared with benchmark statistics obtained from the simulation of particle trajectories in a synthetic boundary layer flow, generated via an inhomogeneous kinematic simulation technique. The results demonstrate the significant advance offered by the new approach. © 2012 American Institute of Physics.

Duke Scholars

Published In

Physics of Fluids

DOI

ISSN

1070-6631

Publication Date

October 3, 2012

Volume

24

Issue

10

Related Subject Headings

  • Fluids & Plasmas
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Bragg, A., Swailes, D. C., & Skartlien, R. (2012). Particle transport in a turbulent boundary layer: Non-local closures for particle dispersion tensors accounting for particle-wall interactions. Physics of Fluids, 24(10). https://doi.org/10.1063/1.4757657
Bragg, A., D. C. Swailes, and R. Skartlien. “Particle transport in a turbulent boundary layer: Non-local closures for particle dispersion tensors accounting for particle-wall interactions.” Physics of Fluids 24, no. 10 (October 3, 2012). https://doi.org/10.1063/1.4757657.
Bragg, A., et al. “Particle transport in a turbulent boundary layer: Non-local closures for particle dispersion tensors accounting for particle-wall interactions.” Physics of Fluids, vol. 24, no. 10, Oct. 2012. Scopus, doi:10.1063/1.4757657.

Published In

Physics of Fluids

DOI

ISSN

1070-6631

Publication Date

October 3, 2012

Volume

24

Issue

10

Related Subject Headings

  • Fluids & Plasmas
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences