Experimental study of flow dynamics and fuel spray characteristics in Lean Premixed Prevaporized Combustor

被引：27

作者：

Yan Yingwen ^{[1
]}

Dang Longfei ^{[1
]}

Deng Yuanhao ^{[1
]}

Li Jinghua ^{[1
]}

Zhao Jianxing ^{[1
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Jiangsu Prov Key Lab Aerosp Power Syst, Nanjing 210016, Jiangsu, Peoples R China

来源：

FUEL | 2015年 / 144卷

基金：

中国国家自然科学基金;

关键词：

Lean Premixed Prevaporized Combustor; Flow dynamics; Fuel spray characteristic; Particle Image Velocimetry (PIV);

D O I：

10.1016/j.fuel.2014.12.048

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Further improving the emission performance of a Lean Premixed Prevaporized (LPP) combustor is a hot topic for gas turbine research. An in-depth understanding of the combustion characteristics is therefore highly desirable. In this paper, the flow fields and fuel spay characteristics in a LPP combustor are experimentally studied by using Particle Image Velocimetry (PIV). The effects of the fuel allocation and pilot atomizer position on fuel spray characteristics are investigated. Experimental results show that: (1) A Primary Recirculation Zone (PRZ), Corner Recirculation Zone (CRZ) and Lip Recirculation Zone (LRZ) are presented in the flow field in a LPP combustor; (2) The width of the primary recirculation zone initially increases along axial direction from the combustor inlet, and starts to decrease after certain distance; (3) When only the pilot atomizer is operated, the fuel spray characteristics is worsened with the increase of fuel flow rate. Locating the pilot atomizer at the throat results is a better fuel spray distribution than locating it at the outlet of the pilot swirler. The present results are useful for future development of the LPP combustor. (c) 2014 Elsevier Ltd. All rights reserved.

引用

页码：197 / 204

页数：8