Three-dimensional large eddy simulation of strut flame-holder with cavity

邹咪; 金捷; 王旭东

doi:10.13224/j.cnki.jasp.2017.03.012

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Three-dimensional large eddy simulation of strut flame-holder with cavity

更新时间：2026-07-07

- Three-dimensional large eddy simulation of strut flame-holder with cavity
- Vol. 32, Issue 3, Pages: 607-613(2017)
- 作者机构：
  
  北京航空航天大学能源与动力工程学院,北京,100191
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.2017.03.012
  CLC：
- Published：2017
- 稿件说明：
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邹咪, 金捷, 王旭东. 带凹腔的支板火焰稳定器三维大涡模拟[J]. 航空动力学报, 2017, 32(3): 607-613.

doi: 10.13224/j.cnki.jasp.2017.03.012
邹咪, 金捷, 王旭东. 带凹腔的支板火焰稳定器三维大涡模拟[J]. 航空动力学报, 2017, 32(3): 607-613. DOI： 10.13224/j.cnki.jasp.2017.03.012.

doi: 10.13224/j.cnki.jasp.2017.03.012 DOI：

摘要

为研究支板冷态流场

应用LES(大涡模拟)的方法对带凹腔的支板火焰稳定器在Ma=0.06和 Ma=0.09两种工况下分别进行三维数值模拟.对比试验和仿真结果表明:三维大涡模拟结果具有与试验相似的流场结构

定量对比试验和LES结果的尾涡脱落频率的最大相对误差为9.4%；支板尾部截面流向时均速度的最大相对误差为7.7%.表明数值模拟方法和边界条件设置的正确性和可信度.又对支板的三维流场进行分析:速度越大

支板尾涡的尺寸和强度越大；支板流场存在明显的三维效应

并且随着速度变大

三维效应越明显.

Abstract

In order to study the cold flow field of strut

three-dimensional LES (large eddy simulation) of strut flame-holder with cavity at Ma=0.06 and Ma=0.09 was carried out respectively. The simulation results were compared with experiment data. It showed that the flow field structure of three-dimensional LES was similar with that of experiment. Whats more

two quantitative comparisons in the frequency of wake vortex and time-averaged stream-wise velocity on strut rear section were made. And the maximum relative errors were 9.4% and 7.7% respectively

proving that the model of numerical calculation at boundary conditions was correct and believable. Then by analyzing the three-dimensional flow field of strut

a conclusion that the faster velocity means the bigger size and intensity of wake vortex. Besides

the result of three-dimensional LES shows an obvious phenomenon of three-dimensional effect which gets stronger when the velocity gets faster.

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