The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON FLUID MECHANICS
Transactions ID Number: 32-811
Full Name: Dejan Cvetinović
Position: Doctor (Researcher)
Age: ON
Sex: Male
Address: Mike Petrovića Alasa 12-14
Country: YUGOSLAVIA
Tel: +381-11-3408-631
Tel prefix:
Fax: +381-11-2453-670
E-mail address: deki@vinca.rs
Other E-mails: deki@vin.bg.ac.rs
Title of the Paper: Turbulent Axisymmetric Self-Sustained Oscillating Air Jet Flow Characteristics
Authors as they appear in the Paper: Dejan Cvetinović, Svetislav Čantrak, Kazuyoshi Nakabe
Email addresses of all the authors: deki@vinca.rs, scantrac@mas.bg.ac.rs, nakabe@me.kyoto-u.ac.jp
Number of paper pages: 10
Abstract: Main aim of this study is the experimental investigation on self-sustained oscillating jet characteristics. Attention was paid to the role of flow or vortical structures modified by the controlled oscillations in free and impinging jet setup. In the present experiments was used „whistler-nozzle", a simple-structured device that can induce self-sustained excitations with controllable frequencies depending on the nozzle geometrical configuration. The frequency of the excitation measured with a far-field microphone probe was around 1 - 2 kHz. The jet Reynolds number was in the range 48000 - 95000 in all experimental conditions presented in the paper. Flow field velocity measurements were provided in the free jet setup, with and without self-sustained excitation. The images of both the free jet were taken with a high-speed digital video camera. The structures of the jets were found to be extremely sensitive to the excitation which can lead to the conclusion that the l!
ocal heat transfer characteristics of jet impingement are remarkably dependent to the jet excitation.
Keywords: turbulent axisymmetric air jet, self-sustained oscillations, high speed camera, hot-wire anemometry
EXTENSION of the file: .doc
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