KIVA程序在波瓣混合器混合流场数值模拟中的应用  

Numerical Investigation on Flow Field of Lobed Mixer with KIVA

作　　者：谢翌[1] 刘友宏[1] 

机构地区：[1]北京航空航天大学能源与动力工程学院,北京100191

出　　处：《科学技术与工程》2010年第33期8185-8190,共6页Science Technology and Engineering

摘　　要：以KIVA程序为研究平台,分别采用标准k-ε湍流模型和RNGk-ε湍流模型,对现代航空发动机中常用的波瓣混合器流场进行了三维数值模拟。通过与实验测量数据对比可知,基于ALE法KIVA程序能够较好地描述波瓣混合器中流向涡系以及正交涡系形状以及涡量随流动的变化规律,与实验结果较为吻合。在湍流模型方面,标准k-ε模型在流向涡以及正交涡涡量大小的描述方面较RNGk-ε模型更为精确。A three-dimensional numerical investigation on flow field of lobed mixer which is usually used in modern turbofan engine was carried on the basement of KIVA program.Standard k-ε and RNG k-ε turbulent models were applied for the simulation.According to contrast between experiment results and numerical simulation results,KIVA based on ALE method is able to describe development of shape and value of streamwise vortices and spanwise vortices.Besides,standard k-ε turbulent model has greater accuracy than RNG k-ε model in describing maximum value of streamwise vortices and spanwise vortices.

关 键 词：波瓣混合器 KIVA 流向涡 正交涡 

分 类 号：V231.3[航空宇航科学与技术—航空宇航推进理论与工程]