TS-59 Interplay between Fuel Spray and Swirling Air Flow in a Hybrid Atomizer with Dual Swirlers(Session C-4 Combustor Elements)

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概要

• 論文の詳細を見る

• Hybrid atomizers which consist of a pressure jet nozzle and a prefilming airblast device are used in aircraft gas turbine combustors for reducing emissions and smoke while maintaining combustor stability. In the hybrid atomizers, the interplay between fuel spray and swirling air flow is very complex. A series of experiments were performed to study the interaction between fuel spray and swirling air flow. The Adaptive Phase/Doppler Velocimetry was used to measure the gas phase flow field as well as the spray characteristics such as drop size, velocity, number density, and volume flux. To assess the global structure of the spray, a visualization was performed using a laser sheet illumination technique. Gas phase flow field obtained without fuel injection shows a strong reverse-flow zone near the swirler exit. Fuel injection makes the main air flow more divergent, possibly due to momentum decrease in the inner swirling flow, and shifts the location of reverse-flow zone downstream. Spray characteristics depend on the recirculation pattern in turn.

• 公益社団法人日本ガスタービン学会の論文
• 1999-11-14

著者

• Han Yeoung

  Aero-propulsion Department Korea Aerospace Research Institute

• Lee Dae

  Aero-propulsion Department Korea Aerospace Research Institute

• SEOL Woo

  Department of Space Propulsion, Korea Aerospace Research Institute

• Seol Woo

  Department Of Space Propulsion Korea Aerospace Research Institute

関連論文

• TS-59 Interplay between Fuel Spray and Swirling Air Flow in a Hybrid Atomizer with Dual Swirlers(Session C-4 Combustor Elements)

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