Pulsatile turbulent flow through pipe bends at high Dean and Womersley numbers
2011 (English)In: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 318, 092023- p.Article in journal (Refereed) Published
Turbulent pulsatile flows through pipe bends are prevalent in internal combustion engine components which consist of bent pipe sections and branching conduits. Nonetheless, most of the studies related to pulsatile flows in pipe bends focus on incompressible, low Womersley and low Dean number flows, primarily because they aim in modeling blood flow, while internal combustion engine related flows have mainly been addressed in terms of integral quantities and consist of single point measurements. The present study aims at bridging the gap between these two fields by means of time-resolved stereoscopic particle image velocimetry measurements in a pipe bend with conditions that are close to those encountered in exhaust manifolds. The time/phase-resolved three-dimensional cross-sectional flow-field 3 pipe diameters downstream the pipe bend is captured and the interplay between different secondary motions throughout a pulse cycle is discussed.
Place, publisher, year, edition, pages
2011. Vol. 318, 092023- p.
Fluid Mechanics and Acoustics
IdentifiersURN: urn:nbn:se:kth:diva-83120DOI: 10.1088/1742-6596/318/9/092023ISI: 000299774100023ScopusID: 2-s2.0-84856347465OAI: oai:DiVA.org:kth-83120DiVA: diva2:498722
13th European Turbulence Conference, ETC13; Warsaw;12 September 2011 through 15 September 2011
QC 201202132012-02-122012-02-122012-04-27Bibliographically approved