Experimental Investigation on Spray Characteristic of Internally-Staged Combustor

被引：0

作者：

Liu Y.-A. ^{[1
]}

Guo Z.-H. ^{[1
,2
]}

Zhang M. ^{[3
]}

机构：

[1] School of Energy and Power Engineering, Beihang University, Beijing

[2] National Key Laboratory of Science and Technology on Aero-Engine Aero-Thermodynamics, School of Energy and Power Engineering, Beihang University, Beijing

[3] AECC Commercial Aircraft Engine Co. Ltd., Shanghai

来源：

Tuijin Jishu/Journal of Propulsion Technology | 2019年 / 40卷 / 08期

关键词：

Experiment; Internally-staged combustor; Lean premixed pre-evaporation; Spray;

D O I：

10.13675/j.cnki.tjjs.180490

中图分类号：

学科分类号：

摘要：

To study the atomization characteristics of the internally-staged combustor, an internally-staged combustor dome was designed. The pilot stage of atomizer adopted lean direct injection, and the main stage used lean premixed pre-evaporation. Four operation conditions were designed for the experiments. Phase Doppler particle analyzer was used to measure droplet size and velocity, and the velocity of droplets below 10μm was represented approximately the flow field velocity. The experimental results show that the flow field has structures such as pilot recirculation zone(PRZ), lip recirculation zone, corner recirculation zone(CRZ), high-speed jet zone of pilot stage and high-speed jet zone of main stage. The structure of flow field is symmetrical and less affected by the change of working conditions. Large droplets are concentrated in the PRZ and the CRZ. Unlike other staged combustors, the internally-staged combustor has special flow field structure and fuel atomization distribution. In the near-field flow field, 65μm~75μm droplets are concentrated in the PRZ region and CRZ region and Case 4 atomization D32 is 60% of Case 3. © 2019, Editorial Department of Journal of Propulsion Technology. All right reserved.

引用

页码：1824 / 1831

页数：7

共 13 条

[1] ICAO 9953-2010, Report of the Independent Experts to CAEP/8 on the Second NO<sub>x</sub> Review and the Establishment of Medium and Long Term Technology Goals for NO<sub>x</sub>
[2] Lefebvre A.H., Atomization and Sprays, (1989)
[3] Lefebvre A.H., Gas Turbine Combustion Alternative Fuels and Emissions, (2010)
[4] Mularz E., Lean, Premixed, Prevaporized Combustion for Aircraft Gas Turbine Engines, 15th Joint Propulsion Conference, (1979)
[5] Charest M.R.J., Gauthier J.E.D., Huang X., Design of a Lean Premixed Prevaporized Can Combustor
[6] Armitage C.A., Cant R.S., Dowling A.P., Et al., Linearised Theory for LPP Combustion Dynamics
[7] Fiorentino A.J., Greene W., Kim J.C., Et al., Variable Geometry, Lean, Premixed, Prevaporized Fuel Combustor Conceptual Design Study, Journal of Engineering for Gas Turbines & Power, 102, 4, pp. 896-902, (1980)
[8] Amoresano A., Tuccillo R., Cameretti M.C., Combined Experimental-Numerical Approach for the Fuel Jet Study in a LPP Combustor
[9] Nakae T., Saigo M., Santo A., Et al., Spray Test of Fuel Nozzle for Lean Pre-Mixed Pre-Vaporized Combustor
[10] Providakis T., Zimmer L., Scouflaire P., Et al., Effect of Fuel Distribution on Spray Dynamics in a Two-Staged Multi-Injection Burner, ASME Turbo Expo, 2, pp. 1217-1229, (2011)

← 1 2 →