Dynamic Characteristics of Open-Type Swirl Injector with Varying Geometry

Chung, Yoo Seung; Kim, Hyun-Tae; Jeong, Seokgyu; Yoon, Youngbin

doi:10.2514/1.b35729

Cited by 17 publications

(2 citation statements)

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“…A closed-loop coupling will be formed, causing severer damage [1] . Bazarov [2,3] made a pioneering contribution and designed hydro-dynamic pulsators which have been widely used by researchers to carry out experimental research.…”

Section: Introductionmentioning

confidence: 99%

“…Fu [4] found that an open-end swirl injector with large geometric parameter A can suppress flow oscillation. Chung [1] reported that the amplitude of the liquid film thickness at the injector orifices decreases with the increase in the diameter, length, and tangential entry number of the swirl chamber. Furthermore, for open-ended swirl injector, the tangential entry number was found to have a greater impact on the dynamic characteristics.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Influence of Low-Frequency Flow Oscillation on the Atomization Characteristics of Gas-Centered Coaxial Centrifugal Nozzle

Kang

Tong²,

Jiang³

et al. 2023

J. Phys.: Conf. Ser.

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The dynamic atomization characteristics of gas center coaxial centrifugal nozzle under the condition of pressure oscillation in the supply system were studied by applying external excitation through the flow pulsator. Obtaining spray image by high-speed photography while using hydro-mechanical pulsator to get generate of supply system. The results show that the spray width changes periodically with low-frequency pressure oscillation. For self-pulsation sprays, it is challenging to maintain a “Christmas tree” shape with low-frequency oscillation. Pressure oscillation can effectively suppress spray self-pulsation. However, the pressure oscillation amplitude may be much larger than that of the self-pulsation itself. Therefore, the premise of applying this method is that the applied external excitation cannot stimulate or amplify the combustion instability. The gas post-pressure drop determines the amplitude and frequency of the self-pulsation, while the excitation frequency will slightly affect the amplitude and frequency of the self-pulsation.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%