AECSC-IBM航空发动机燃烧室数值模拟软件研发与检验  

Development and inspection of aero-engine combustor simulation software AECSC-IBM

作　　者：王煜栋 王方[1,2,3] 周佳伟[1] 金捷 WANG Yudong;WANG Fang;ZHOU Jiawei;JIN Jie(Aeroengine Numerical Simulation Research Center,School of Energy and Power Engineering,Beihang University,Beijing 100191,China;Chengdu Innovation Research Institute on Aircraft Power,Beihang University,Chengdu 611930,China;Jiangxi Research Institute,Beihang University,Nanchang 330096,China)

机构地区：[1]北京航空航天大学能源与动力工程学院航空发动机数值仿真研究中心,北京100191 [2]北京航空航天大学成都航空动力创新研究院,成都611930 [3]北京航空航天大学江西研究院,南昌330096

出　　处：《航空动力学报》2022年第10期2310-2323,共14页Journal of Aerospace Power

基　　金：国家自然科学基金(91741125);国家科技重大专项(2017-Ⅰ-0004-0005)。

摘　　要：针对航空发动机燃烧室的高保真数值模拟需求,基于浸没边界方法(IBM)及大涡模拟-输运概率密度函数湍流燃烧模型(LES-TPDF)开发软件AECSC-IBM,用网格标记映射燃烧室真实几何结构。通过模拟双旋流燃烧室算例和Sandia射流火焰算例检验湍流流动和燃烧的模拟精度。在双旋流燃烧室模拟中,旋流器出口时均轴向、径向、切向速度平均误差分别为15.7%、23.8%和15.0%。在射流火焰的模拟中,Flame-E和Flame-F的温度、燃料质量分数平均相对误差分别为14.69%、5.22%和14.18%、5.54%。进一步将AECSC-IBM软件应用于某真实结构单头部燃烧室算例,模拟得到出口温度与实验数据相比方均根误差为11.66%。算例检验表明AECSC-IBM软件能快速精确映射几何模型,大幅减少复杂几何高质量网格生成工作量,高效准确地模拟航空发动机燃烧室内的两相湍流燃烧现象,模拟结果可为燃烧室精细化研发提供燃烧场数据参考,具有工程实用价值。To meet the needs of high-fidelity numerical simulation of aero-engine combustors,the AECSC-IBM software was developed based on the immersion boundary method(IBM) and the large-eddy simulation-transported probability density function combustion model(LES-TPDF).The original geometric structure of the combustor was mapped with grid markers.The simulation accuracy of turbulent flow and combustion was verified by a simulation example of a twin-swirl combustor and Sandia jet flame.In the simulation of twin cyclone combustors,the average errors of axial,radial and tangential velocities at the outlet of the swirler were 15.7%,23.8%,and 15.0%,respectively.The average relative errors of temperature and fuel mass fraction for flame-E,flame-F were 14.69% and 5.22%,14.18% and 5.54%,respectively.Furthermore,AECSC-IBM software was applied to a single head combustor of a real structure,and the root mean square error of the simulated exit temperature was 11.66% compared with the experimental data.Example tests showed that AECSC-IBM software can map geometric models quickly and accurately,reduce the workload of complex geometry high-quality mesh generation greatly,and simulate the two-phase turbulent combustion phenomenon in the aero-engine combustion chamber efficiently and accurately.The simulation results can provide a reference for combustion field data in combustion chamber refinement research and development,presenting practical engineering value.

关 键 词：AECSC-IBM软件 大涡模拟(LES) 输运概率密度函数方程(TPDF) 浸没边界方法(IBM) 燃烧室数值模拟 

分 类 号：V231.2[航空宇航科学与技术—航空宇航推进理论与工程]