Non-linear eddy-viscosity modelling of transitional boundary layers pertinent to turbomachine aerodynamics

Wen-Lih Chen, F. S. Lien, M. A. Leschziner

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)

Abstract

The predictive performance of three low-Reynolds-number turbulence models, one based on the linear (Boussinesq) stress-strain relationship and two adopting cubic forms, is examined by reference to transitional flat-plate boundary layers subjected to streamwise pressure gradient and moderate free-stream turbulence, the latter causing bypass transition. One of the cubic models involves the solution of two transport equations, while the other involves three equations, one of which relates to the second invariant of turbulence anisotropy. The investigation demonstrates that, for the conditions examined, the non-linear models return a more credible representation of transition than the linear variant, although none of the models may be said to be entirely satisfactory. Thus, while non-linear modelling shows promise and offers inherent advantages through the use of a more general stress-strain linkage and elaborate calibration, further refinement is needed in the present cubic variants for transitional flows.

Original languageEnglish
Pages (from-to)297-306
Number of pages10
JournalInternational Journal of Heat and Fluid Flow
Volume19
Issue number4
DOIs
Publication statusPublished - 1998 Aug 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Fingerprint Dive into the research topics of 'Non-linear eddy-viscosity modelling of transitional boundary layers pertinent to turbomachine aerodynamics'. Together they form a unique fingerprint.

Cite this