Title page for ETD etd-11142006-074613


Type of Document Master's Thesis
Author Bouladoux, Pierre-Emmanuel Jacques Joseph
Author's Email Address pboula1@lsu.edu
URN etd-11142006-074613
Title Pulsed Vertical Jet in Cross Flow at Mean Blowing Ratios 0.35 and 0.45
Degree Master of Science in Mechanical Engineering (M.S.M.E.)
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Dimitris E. Nikitopoulos Committee Chair
Kevin W. Kelly Committee Member
Sumanta Acharya Committee Member
Keywords
  • horseshoe vortex
  • ring vortex
  • kelvin-helmholtz instability
  • film cooling
Date of Defense 2006-09-15
Availability unrestricted
Abstract
This thesis deals with a pulsed vertical jet transverse to a cross flow (U=1.6m/s) at mean blowing ratios 0.35 and 0.45. First the reasons of this study are explained and the previous work in the field is described. Then the experimental setup, the experimental procedures and the data processing are detailed. The system (wind tunnel and jet) is characterized before studying the Jet in Cross Flow (JICF). The JICF is explored under unforced and forced conditions through LASER sheet visualizations and constant temperature anemometry (CTA) measurements using hot-wire sensors. Blowing ratios ranging from 0.150 to 0.600 are studied for the unforced JICF to cover the range of blowing ratios present in the forced cases. Mean blowing ratios of 0.35 and 0.45 were studied at various low and peak-to-peak blowing ratio conditions, duty cycles of 0.25, 0.50 and 0.70, and forcing frequencies of 0.5Hz, 1.0Hz, 5.0Hz and 10.0Hz. Associated physical phenomena and the influence of the various parameters are discussed.
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