Identifier

etd-11142006-074613

Degree

Master of Science in Mechanical Engineering (MSME)

Department

Mechanical Engineering

Document Type

Thesis

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.

Date

2006

Document Availability at the Time of Submission

Release the entire work immediately for access worldwide.

Committee Chair

Dimitris E. Nikitopoulos

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