带壁面射流燃烧室燃烧数值模拟
Numerical simulation of combustion in a wall jet combustor
-
摘要: 利用基于非结构化网格有限体积法对三维有壁面射流的燃烧室内两相流动和燃烧进行了数值研究.对气相流动在Euler坐标系下求解,而对液滴相则利用Lagrange方法进行追踪求解.计算区域采用四面体网格进行划分,气相流场用SIMPLEC计算方法,对液滴相采用了欧拉隐式方法.考虑了液滴相与气相的完全双向耦合作用,分别采用了Spalding液滴蒸发模型和涡破碎(EBU)燃烧模型,数值计算结果与文献中实验数据吻合较好.Abstract: The gas-liquid two phase flow and combustion in wall jet combustor was simulated numerically using finite volume method based on unstructured grid.The gas phase flow was solved in Euler coordinate,while the droplet was described with Lagrange method.The computational domain was divided with tetrahedron.SIMPLECmethod was used for gas phase flow and Euler implicit method for droplet trajectory integration.The interaction between two phases was taken into account with full two way coupling method.Spalding evaporation model was used for droplet evaporating and eddy breakup(EBU) model for combustion.The numerical result is consistent with experimental data in literature.
-
Key words:
- gas-liquid two phase combustion /
- wall jet /
- unstructured grid /
- finite volume method
-
[1] 金捷.美国推进系统数值仿真(NPSS)计划综述[J].燃气涡轮试验与研究,2003,16(1);57-62.JIN Jie.A summary of numerical propulsion simulation system (NPSS)by NASA[J].Journal of Gas-Turbine Experiment and Research.2003,16(1):57-62.(in Chinese) [2] 杨立军,葛明和,张向阳.液体离心喷嘴喷雾场动态特性的初步研究[J].航空动力学报,2005,20(6):1083-1087.YANG Lijun,GE Minghe.ZHANG Xiangyang Preliminary investigation on dynamic characteristics of swirl injector[J].Journal of Aerospace Power,2005,20(6):1083-1087.(in Chinese) [3] 岳明.徐行,杨茂林.离心式喷嘴内气液两相流动的数值模拟[J].E程热物理学报,2003,24(5):888-890.YUE Ming,XU Hang.YANG Maolin.Numerical study of two phase flow in atomizer[J].Journal of Engineering Thermophysics,2003,24(5):888-890.(in Chinese) [4] Cameron C D,Brouwer J,Wood C P,et al.A detailed characterization of the velocity and thermal fields in a model can combustor with wall jet injection[J].Journal of Engineering for Gas Turbines and Power,1989,111:31-35. [5] Datta A,Som S K.Combustion and emission characteristics in a gas turbine combustor at different pressure and swirl conditions[J].Applied Thermal Engineering,1999,19:949-967. [6] 雷国东.柳贡民,明平剑.CGNS APl和FVM在非结构混合网格计算中的应用[J].计算物理,2007,24(3):277-281.LEI Guodong.LIU Gongmin.MING Pingjian.CGNS API and FVM in unstructured hybrid grid computational method[J].Chinese Journal of Computational Physics,2007,24(3):277-281.(in Chinese) [7] Ferziger J H,Peric M.Computational methods for fluid dynamics[M].3rd ed.Berlin:Springer Press,2002:107-112. [8] Rhie C M,Chow W L.Numerical study of the turbulent flow past an airfoil with trailing edge separation[J].AIAA Journal,1983,21(11):1525-1532. -
点击查看大图
计量
- 文章访问数: 1417
- HTML浏览量: 1
- PDF量: 435
- 被引次数: 0
下载: