Time and spatial pressure and velocity correlation in a microbubble laden boundary layer

Elvis E. Dominguez-Ontiveros, Carlos Estrada-Perez, Yassin A. Hassan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Measurements of the velocity fields and wall pressure have been performed in a microbubble laden boundary layer in order to have a better understanding of the degree of correlation between these two parameters. Cross-correlation coefficients have been obtained from synchronized measurements of pressure and velocity at different distances from the wall in a channel flow. The results show a high correlation between pressure and both the streamwise and normal components of the velocity vector for the two-phase flow case. In contrast, the correlation coefficient between pressure and velocity is high only for the streamwise component of the velocity vector for single phase flow (no microbubbles in the flow). A practical application of these measurements is obtaining data and information to better describe the mechanism responsible for the microbubble drag reduction phenomenon, which has great potential for energy savings on different transport means.

Original languageEnglish
Title of host publication2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Pages307-312
Number of pages6
EditionPART A
DOIs
StatePublished - 2007
Externally publishedYes
Event2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 - San Diego, CA, United States
Duration: Jul 30 2007Aug 2 2007

Publication series

Name2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
NumberPART A
Volume1 SYMPOSIA

Conference

Conference2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Country/TerritoryUnited States
CitySan Diego, CA
Period07/30/0708/2/07

Keywords

  • Correlation
  • Drag reduction
  • Microbubble
  • PIV
  • Pressure
  • Turbulence
  • Wavelets

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