The effect of target surface oscillations on a turbulent impinging-jet flow

V. Chaugule, R. Narayanaswamy, A. D. Lucey, V. Narayanan, J. Jewkes

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


The effect of an oscillating target surface on the fluid dynamics of a turbulent impinging jet has been experimentally studied in this paper. The impinging jet effuses from a nozzle with a circular cross-section at a Reynolds number of 5200. The target surface is placed downstream to the nozzle exit at a separation distance of two nozzle diameters, where it oscillates in a direction parallel to the jet impingement direction at a frequency of 20 Hz and at a peak-to-peak displacement amplitude of 0.16 times the nozzle diameter. The flow-field measurements of the mean velocities and the turbulent intensities at 4 displacement positions of the target surface during an oscillation cycle are carried out; two of these positions are considered when the target surface moves away from the jet exit and the other two when it moves towards the jet exit. The measurements at these positions are compared with the corresponding measurements in the impinging-jet flow on a static target surface. The results for the impinging-jet flow on an oscillating target surface show higher mean radial velocities and greater turbulence levels in the wall-jet region, when compared to those in the static target surface.

Original languageEnglish
Title of host publicationProceedings of the 20th Australasian Fluid Mechanics Conference, AFMC 2006
PublisherAustralasian Fluid Mechanics Society
Number of pages4
ISBN (Electronic)9781740523776
Publication statusPublished - 2016
Externally publishedYes
EventAustralasian Fluid Mechanics Conference 2016 - The University of Western Australia, Perth, Australia
Duration: 5 Dec 20168 Dec 2016
Conference number: 20th


ConferenceAustralasian Fluid Mechanics Conference 2016
Abbreviated titleAFMC 2016

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