LARGE-EDDY SIMULATION OF TRANSIENT BEHAVIOR IN A COMBUSTION FIELD FOR GAS-TURBINE ENGINE

被引：0

作者：

Takahashi, Yusuke ^{[1
]}

Oshima, Nobuyuki ^{[1
]}

Iwai, Yasunori ^{[2
]}

机构：

[1] Hokkaido Univ, Kita Ku, Kita 13 Nishi 8, Sapporo, Hokkaido 0608628, Japan

[2] Toshiba Co Ltd, Tsurumi Ku, Yokohama, Kanagawa 2300045, Japan

来源：

11TH WORLD CONGRESS ON COMPUTATIONAL MECHANICS; 5TH EUROPEAN CONFERENCE ON COMPUTATIONAL MECHANICS; 6TH EUROPEAN CONFERENCE ON COMPUTATIONAL FLUID DYNAMICS, VOLS V - VI | 2014年

关键词：

Industrial combustor; Large eddy simulation; Flamelet approach;

D O I：

暂无

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

Combustion flow field in an industrial gas-turbine combustor was numerically investigated with a newly-developed turbulent combustion model. For turbulent model, large-eddy simulation technique was introduced to simulate unsteady phenomena in detail. The combustion model was based on a two-scalar flamelet approach coupling the two concepts of premixed and non-premixed flames expressed by the conservative scalar of mixture fraction and the levelset function of premixed flame surface, respectively. A fine full tetra computational mesh of 45.5 million cells and 7.7 million nodes was used to resolve turbulent fluctuation with high accuracy in the combustion field. The simulations were performed for two calculation conditions reproducing diffusion-like and premixed-like flames and for three conditions decreasing fuel inlet to investigate flame extinction behavior. It was indicated that premixed or partial premixed turbulent flames by complex burner system in the real scale combustor can be reasonably captured by the present simulation model.

引用

页码：5792 / 5803

页数：12

共 13 条

[1]

Daniele S., 2012, P ASME TURB EXP 2012

[2]

Hirano K., 2012, P ASME TURB EXP 2012, pGT2012

[3]

Kee R. J., 1996, UC405SAND968216

[4] A Level Set Approach for a Premixed Flame Based on a New Concept of Flame Speed [J].