Experimental investigation of low-frequency instabilities of dual-swirl pressure-atomization spray flames

被引：1

作者：

Kim, Myungho ^{[1
,2
]}

Kim, Kyu Tae ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Aerosp Engn, 291 Daehak Ro, Daejeon 34141, South Korea

[2] Agcy Def Dev, Aerosp Technol Res Inst, Daejeon 34186, South Korea

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2022年 / 36卷 / 07期

关键词：

Aero-engine combustor; Combustion dynamics; Dual swirl; Low frequency; Spray combustion; EXCITED AZIMUTHAL MODES; HEAT RELEASE RATE; COMBUSTION INSTABILITIES; MECHANISMS; DYNAMICS; OSCILLATIONS; TRANSITION; INJECTOR;

D O I：

10.1007/s12206-022-0627-3

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The present study is concerned with the low-frequency self-excited instabilities frequently occurring in aero-engine combustors operated with Jet A-1 fuel under pilot-mode non-premixed conditions. Here we perform extensive measurements of pressure oscillations and high-speed flame visualization to investigate several key aspects of non-premixed spray combustion dynamics associated with a dual-swirl pressure atomization nozzle. Our measurements show that the low-frequency instabilities in non-premixed combustion are intense at near-stoichiometric mixture ratios, with a strong negative correlation with inlet air temperature. The development of low-frequency instabilities is attributable to the interaction between several distinctive reaction regions with different characteristic timescales, involving periodically emerging partially-premixed flames near the injector face and downstream propagating non-premixed reaction regions.

引用

页码：3501 / 3508

页数：8

共 50 条

[31] Experimental comparison of the spray atomization of heavy and light fuel oil at different temperatures and pressures for pressure-swirl injector
Rostami, Elyas
Mahdavy Moghaddam, Hossein
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY, 2021, 235 (07) : 1694 - 1717
[32] Experimental investigation of the angular dependence of low-frequency seabed reverberation
Prior, MK
IEEE JOURNAL OF OCEANIC ENGINEERING, 2005, 30 (04) : 691 - 699
[33] An experimental and ab initio investigation of the low-frequency vibrations of coumaran
Watkins, MJ
Belcher, DE
Cockett, MCR
JOURNAL OF CHEMICAL PHYSICS, 2002, 116 (18): : 7855 - 7867
[34] EXPERIMENTAL INVESTIGATION OF LOW-FREQUENCY CAPACITIVE RESPONSE OF A PLASMA SHEATH
OLIVER, BM
CLEMENTS, RM
SMY, PR
JOURNAL OF APPLIED PHYSICS, 1973, 44 (10) : 4511 - 4517
[35] A theoretical and experimental investigation of low-frequency acoustic vector sensors
Silvia, MT
Richards, RT
OCEANS 2002 MTS/IEEE CONFERENCE & EXHIBITION, VOLS 1-4, CONFERENCE PROCEEDINGS, 2002, : 1886 - 1897
[36] Theoretical and experimental investigation of low-frequency wavelength modulation spectroscopy
Li, Q.
Xiao, L.T.
Li, C.Y.
Jia, S.T.
Zhou, G.S.
Guangxue Xuebao/Acta Optica Sinica, 2001, 21 (03): : 317 - 319
[37] Application of Low-Frequency Acoustic Waves to Extinguish Flames on the Basis of Selected Experimental Attempts
Loboichenko, Valentyna
Wilk-Jakubowski, Grzegorz
Wilk-Jakubowski, Jacek Lukasz
Ciosmak, Jozef
Applied Sciences (Switzerland), 2024, 14 (19):
[38] Investigation of disk bender low-frequency projector with dual radiation surfaces
Yamamoto, Mitsuru, 1600, (32):
[39] INVESTIGATION OF DISK BENDER LOW-FREQUENCY PROJECTOR WITH DUAL RADIATION SURFACES
YAMAMOTO, M
HAMA, Y
SHIBA, H
WATARI, N
INOUE, T
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1993, 32 (5B): : 2285 - 2287
[40] An experimental study on the spray characteristics of a dual-orifice type swirl injector at low fuel temperatures
Park, BS
Kim, HY
Kim, Y
Chung, JT
KSME INTERNATIONAL JOURNAL, 2004, 18 (07): : 1187 - 1195

← 1 2 3 4 5 →