径向双旋流燃烧室流场结构大涡模拟研究

推进技术 ›› 2017, Vol. 38 ›› Issue (4): 909-917.

径向双旋流燃烧室流场结构大涡模拟研究

周瑜¹,乐嘉陵^1,2,陈柳君¹,黄渊²

西北工业大学动力与能源学院，陕西西安 710072,西北工业大学动力与能源学院，陕西西安 710072; 中国空气动力研究与发展中心超高速空气动力研究所高超声速冲压发动机技术重点实验室，四川绵阳 621000,西北工业大学动力与能源学院，陕西西安 710072,中国空气动力研究与发展中心超高速空气动力研究所高超声速冲压发动机技术重点实验室，四川绵阳 621000

发布日期:2021-08-15
作者简介:周瑜，男，博士生，研究领域为航空发动机燃烧室数值模拟。
基金资助:
国家自然科学基金(91641205)。

Large Eddy Simulation of Aeroengine Combustor with Counter-Rotating Swirler

School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China,School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China; Science and Technology on Scramjet Laboratory，Hypervelocity Aerodynamics Institute of CARDC， Mianyang 621000，China,School of Power and Energy，Northwestern Polytechnical University，Xi’an 710072，China and Science and Technology on Scramjet Laboratory，Hypervelocity Aerodynamics Institute of CARDC， Mianyang 621000，China

Published:2021-08-15

摘要/Abstract

摘要： 为深入了解真实航空发动机燃烧室内流场结构，在自有CFD平台上采用动态亚网格湍流模型对一种径向双旋流环形燃烧室的单个头部构型冷态流场进行了大涡模拟。为保证模拟精度，没有对模型进行常规简化处理，对包括全部气膜冷却小孔在内的所有精细结构均进行了完全仿真。计算验证了程序对高度复杂流场的模拟能力，结果表明，大涡模拟能较为全面地反映燃烧室内复杂流场从静止启动到统计定常的非定常发展过程，并成功捕捉到流场中心回流区等各种大尺度结构及涡旋破碎泡等旋流特征；大涡模拟所获得的时间平均流场结构与已有PIV试验结果定性一致，与RANS计算相比更接近试验测量值。

关键词: 航空发动机；燃烧室；径向双旋流；大涡模拟；动态亚网格模型

Abstract: To gain an improved understanding of the flow and turbulence structures in practical aeroengine combustor，large eddy simulation with dynamic Smagorinsky sub-grid model was used to explore the complex flow field in a single sector of a typical aeroengine combustor with counter-rotating swirler. The complex geometric configuration including all film cooling holes was fully simulated without any conventional simplification in order to reduce the modeling errors. The capability of our CFD code to simulate very complicated flow was validated by the calculation. The unsteady process that turbulent swirling flow developing from static to statistically stationary status was totally reproduced. Large-scale coherent structures like central recirculation zone(CRZ) and swirling flow characteristics like vortex breakdown were well captured. Time-averaged flow field predicted by LES shows qualitative agreement with PIV measurement and performed better than RANS.

Key words: Aeroengine；Combustor；Counter-swirler；Large eddy simulation；Dynamic smagorinsky model

周瑜,乐嘉陵,陈柳君,黄渊. 径向双旋流燃烧室流场结构大涡模拟研究[J]. 推进技术, 2017, 38(4): 909-917.

ZHOU Yu¹,LE Jia-ling^1,2,CHEN Liu-jun¹,HUANG Yuan². Large Eddy Simulation of Aeroengine Combustor with Counter-Rotating Swirler[J]. Journal of Propulsion Technology, 2017, 38(4): 909-917.

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[15] Yee Chee See, Matthias Ihme. Large Eddy Simulation of a Gas Turbine Model Combustor[R]. AIAA 2013-0172.　　　　　　　　*　收稿日期:2016-04-24；修订日期:2016-06-01。基金项目:国家自然科学基金(91641205)。作者简介:周瑜,男,博士生,研究领域为航空发动机燃烧室数值模拟。E-mail: zhouyu1984@126.com(编辑:田佳莹)　　　　　(上接第908页)(编辑:史亚红)