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2019 Vol.24, Issue 4 Preview Page

Research Article

Multiple Combustor Interactions due to Frequency Detuning: Joint Probability Distribution Function Analysis

주파수 이조에 의한 다중 연소기 상호작용: 결합확률분포 분석

Hyunwook Jegal1
,
Kyu Tae Kim1*
제갈 현욱1
,
김 규태1*
1Department of Aerospace Engineering, Korea Advanced Institute of Science and Technology
1한국과학기술원 항공우주공학과
* Corresponding Author
30 December 2019. pp. 18-24
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Abstract

Acoustic interactions between adjacent combustors via a cross-talk section have been investigated in a dual-combustor configuration. Acoustic pressure oscillations measured in two model combustors were used to calculate joint probability distribution functions (JPDF), instantaneous phase differences, and coherence spectra. Using the JPDF analysis, we show that the nature of adjacent combustor interactions can be retrieved by interpreting the distribution patterns. The instantaneous phase angle obtained using the Hilbert transform and the coherence spectra support our interpretation.

Keywords
Can-can interaction
Push-push mode
Push-pull mode
Joint probability distribution function
Coherence spectrum

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Information
  • Publisher :The Korean Society Combustion
  • Publisher(Ko) :한국연소학회
  • Journal Title :Journal of The Korean Society Combustion
  • Journal Title(Ko) :한국연소학회지
  • Volume : 24
  • No :4
  • Pages :18-24
  • Received Date : 2019-07-26
  • Revised Date : 2019-09-03
  • Accepted Date : 2019-09-10
  • DOI :https://doi.org/10.15231/jksc.2019.24.4.018
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