Title

模型燃燒室紊流燃燒的大渦模擬

Translated Titles

Large-Eddy Simulation of Turbulent Combustion in a Model Combustor

Authors

顏應文(Ying-Wen Yan);趙堅行(Jian-Xing Zhao)

Key Words

航空、航天推進系統 ; 亞網格尺度燃燒模型 ; 大渦模擬 ; G方程小火焰模型 ; V型穩定器 ; 紊流化學反應流 ; aerospace propulsion system ; subgrid-scale combustion model ; Large-Eddy Simulation LES ; G-equation flamelet model ; V-gutter flame holder ; turbulent chemical reaction flow

PublicationName

航空動力學報

Volume or Term/Year and Month of Publication

20卷1期(2005 / 02 / 01)

Page #

86 - 91

Content Language

簡體中文

Chinese Abstract

採用了兩種不同的亞網格尺度燃燒模型對帶V型穩定器的模型燃燒室紊流化學反應流動進行了大渦模擬,用k-ε方程亞網格尺度模型確定亞網格紊流粘性,為了考慮熱輻射對燃燒室壁溫和氣流溫度的影響,運用熱流法輻射模型估算熱輻射通量,用SIMPLE算法和混合差分求解大渦模擬各守恆方程,通過對兩種不同亞網格尺度燃燒模型數值模擬結果與實驗值的比較表明,兩種燃燒模型都與實驗值較吻合,但G方程小火焰模型要比亞網格EBU燃燒模型符合得更好些。

English Abstract

Two different subgrid-scale combustion models were used for the Large-Eddy Simulation (LES) of turbulent chemical reaction flows in a model combustor with V-gutter flame holder. The subgrid eddy viscosity was determined by using k-equation subgrid-scale (KSGS) model. To take into account the influence of heat radiation on wall temperature and gas temperature distributions, heat flux model was applied to predict heat flux distributions. The LES equations were solved with SIMPLE algorithm and hybrid scheme. Comparison of numerical results with experimental data shows that the two different subgrid-scale combustion models can all be used to simulate the combustion, but the G-equation flamelet model is better than the EBU subgrid combustion model. These results provide confidence that the LES may lead to a better under standing of the combustion process.

Topic Category 工程學 > 交通運輸工程