노즐 직경 변화가 다중슬릿 수소 연소기의 고주파 횡방향 불안정에 미치는 영향
Influence of Nozzle Diameter on High-Frequency Transverse Instabilities in Multislit Hydrogen Combustors
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초록
High-frequency transverse instabilities arising from lean-premixed hydrogen combustors were experimentally investigated to identify important trends in high-frequency modal dynamics, with a particular emphasis on the influence of nozzle diameter. Experimentally, we show that high-frequency transverse modes are triggered under relatively high thermal power and high temperature conditions. The dominant instability frequency and related modal dynamics depend heavily on the diameter of combustion liners, and the preferred nodal line position is observed to be governed by the presence of rotational asymmetry planes.
Abstract
High-frequency transverse instabilities arising from lean-premixed hydrogen combustors were experimentally investigated to identify important trends in high-frequency modal dynamics, with a particular emphasis on the influence of nozzle diameter. Experimentally, we show that high-frequency transverse modes are triggered under relatively high thermal power and high temperature conditions. The dominant instability frequency and related modal dynamics depend heavily on the diameter of combustion liners, and the preferred nodal line position is observed to be governed by the presence of rotational asymmetry planes.
참고문헌 (25)
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