Research on Combustion Oscillation Stabilization by Resonator(1st Report, Numerical Analysis of Helmholtz Oscillation Control)
| Autor: | Kazunori Shioda, Susumu Yamanaka, Kazunori Iwabuchi, Okamoto Masanori, Fukuo Maeda, Toshiaki Tsuchiya |
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| Rok vydání: | 2003 |
| Předmět: |
Materials science
Oscillation Mechanical Engineering Acoustics Attenuation Condensed Matter Physics Combustion stomatognathic diseases General Relativity and Quantum Cosmology symbols.namesake Resonator stomatognathic system Helmholtz free energy otorhinolaryngologic diseases symbols Combustor Relaxation (physics) Dynamic pressure |
| Zdroj: | TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B. 69:1254-1261 |
| ISSN: | 1884-8346 0387-5016 |
| DOI: | 10.1299/kikaib.69.1254 |
| Popis: | The effects of resonator on combustion oscillation stabilization have been investigated for gas turbine combustor, and mechanism of Helmholtz oscillation control by resonator has been discussed. Numerical model describing Helmholtz oscillation behavior, excited between combustor and fuel injector, is presented. And relaxation of oscillation amplitude corresponding to resonator parameters, such as throat diameter and length, are calculated and compared by atmospheric combustion experiments. In case resonator is resonant to combustor, it is shown that oscillation amplitude can be minimized. However, effectiveness of resonator is lessened with decrease of throat diameter or increase of throat length, while throat diameter and length are both tuning parameters of resonator. Throat resistance, which is determined by both of throat diameter and length, is actually one of the major parameters in Helmholtz oscillation control. Resonator parameters must be optimized in terms of attenuation characteristics as well as resonant frequency. |
| Databáze: | OpenAIRE |
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