Turbulence properties of high and low swirl in-cylinder flows

Charles Funk, Volker Sick, David L. Reuss, Werner Dahm

Research output: Chapter in Book/Report/Conference proceedingConference contribution

37 Citations (Scopus)

Abstract

In previous work, Reuss [1] studied the cycle-to-cycle variation in the large-scale velocity structures of high and low-swirl in-cylinder flows of an IC engine. The vector flow fields were obtained from PIV measurements in a two-valve, pancake-shaped, Transparent Combustion Chamber (TCC) engine. In this study, the Reynolds-decomposed turbulence properties such as kinetic energy, length scales, and dissipation rate were directly measured for the two cases. The results demonstrate that, at TDC compression, the low-swirl flow is dominated by turbulence at the largest scales, whereas the high-swirl flow has a considerably lower turbulence Reynolds number. The dissipation rate and length scale calculated from mixing-length theory greatly exceeded the dissipation computed from the 2-D velocity-gradients and integral-length scales computed from the autocorrelation, respectively.

Original languageEnglish (US)
Title of host publicationSAE Technical Papers
DOIs
StatePublished - 2002
Externally publishedYes
EventPowertrain and Fluid Systems Conference and Exhibition - San Diego, CA, United States
Duration: Oct 21 2002Oct 24 2002

Other

OtherPowertrain and Fluid Systems Conference and Exhibition
CountryUnited States
CitySan Diego, CA
Period10/21/0210/24/02

Fingerprint

Engine cylinders
Turbulence
Engines
Combustion chambers
Autocorrelation
Kinetic energy
Flow fields
Reynolds number

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

Cite this

Turbulence properties of high and low swirl in-cylinder flows. / Funk, Charles; Sick, Volker; Reuss, David L.; Dahm, Werner.

SAE Technical Papers. 2002.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Funk, C, Sick, V, Reuss, DL & Dahm, W 2002, Turbulence properties of high and low swirl in-cylinder flows. in SAE Technical Papers. Powertrain and Fluid Systems Conference and Exhibition, San Diego, CA, United States, 10/21/02. https://doi.org/10.4271/2002-01-2841
Funk, Charles ; Sick, Volker ; Reuss, David L. ; Dahm, Werner. / Turbulence properties of high and low swirl in-cylinder flows. SAE Technical Papers. 2002.
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