离心式喷嘴充填过程内部流动特性仿真

陈慧源; 康忠涛; 成鹏; 李清廉

doi:10.13224/j.cnki.jasp.2018.04.021

离心式喷嘴充填过程内部流动特性仿真

doi: 10.13224/j.cnki.jasp.2018.04.021

1.
国防科技大学高超声速冲压发动机技术重点实验室，长沙 410073；国防科技大学空天科学学院，长沙 410073
2.
国防科技大学高超声速冲压发动机技术重点实验室，长沙 410073；2.国防科技大学空天科学学院，长沙 410073

基金项目: 国家重点基础研究发展计划（613239）；国家自然科学基金(11472303，11402298);新世纪优秀人才支持计划(NCET-13-0156)

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出版历程
- 收稿日期: 2016-10-28
- 刊出日期: 2018-04-28

Simulation of inner flow characteristics of swirl injector during the filing process

摘要

摘要: 基于两相界面追踪方法VOF(volume of fluid)模拟了离心式喷嘴充填过程中的内部流动特性。研究了气液界面随时间的变化过程，发现了充填过程中气核收缩和旋转液膜的现象；通过提取气相体积分数等值线的方法计算了充填过程中喷嘴出口液膜厚度和喷雾锥角的变化。结果发现：液膜厚度随出口流量的增大而增大，出口喷雾锥角随出口流量的增大而减小；描述了喷嘴旋流室内的回流现象，分析了充填完成后的压力场和速度场分布，发现在压降和气液作用的共同影响下，中心气核轴向速度沿轴向先增后减。
- 充填过程 /
- 内部流动特性 /
- 离心式喷嘴 /
- 数值仿真 /
- 流体体积法
Abstract: Inner flow of fluid (VOF) method was applied in the simulation of inner flow characteristics of a swirl injector during the filling process. The resolution of the phase interface was investigated, the phenomena of the shrink of air core and the rotation of liquid film were discovered. The changes of liquid film thickness and spray angle at the injector outlet during the filling process were calculated by extracting the contours of gas phase volume fraction. The results showed that the liquid film thickness increased along with the outlet mass flow rate, while the spray angle decreased. Besides, the circumfluence in the swirl chamber was described, and the pressure field and velocity field were analyzed, indicating the change of the axial velocity was attributed to the co-effect of pressure drop and gas-liquid interaction.
- filing process /
- inner flow characteristics /
- swirl injector /
- numerical simulation /
- volume of fluid(VOF)

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参考文献(19)

[1]	CHINN J J.An appraisal of swirl atomezer invisid flow analysis:Part Ⅰ the princlple of maximun flow for a swirl atomizer and its use in the exposition and comparison of early flow analyses［J］.Atomization and Sprays,2009,19(3):263-282.
[2]	HORVAY M,LEUCKEL W.Theoretical investigation of swirl nozzles for pressure-jet atomization［J］.German Chemical Engineering,1986,9(5):276-283.
[3]	朱宁昌,刘国球.液体火箭发动机设计［M］.北京:宇航出版社,1994.
[4]	KIM S,KHIL T,KIM D,et al.Effect of geometric parameters on the liquid film thickness and air core formation in a swirl injector［J］.Measurement Science and Technology,2008,20(1):015403.1-015403.11.
[5]	KHIL T,CHUNG Y,BAZAROV V G,et al.Dynamic characteristics of simplex swirl injector in low frequency range［J］.Journal of Propulsion and Power,2012,28(2):323-333.
[6]	刘娟,李清廉,王振国,等.基于VOF方法模拟离心式喷嘴内部流动过程［J］.航空动力学报,2011,26(9):1987-1995.LIU Juan,LI Qinglian,WANG Zhenguo,et al.Numerical simulation of flow field in pressure-swirl injector based on VOF interface tracking method［J］.Journal of Aerospace Power,2011,26(9):1987-1995.(in Chinese)
[7]	王国辉,蔡体敏,何国强,等.一种旋流式喷嘴的实验和数值研究［J］.推进技术,2003,24(1):28-32.WANG Guohui,CAI Timin,HE Guoqiang,et al.Experimental and numerical investigation of a swirl atomizer［J］.Journal of Propulsion and Technology,2003,24(1):28-32.(in Chinese)
[8]	王成军,陈海耿,马金凤.基于VOF方法数值模拟离心式喷嘴内两相流流动［J］.东北大学学报(自然科学版),2009,30(7):1005-1008. WANG Chengjun,CHEN Haigeng,MA Jinfeng.VOF-base numerical simulation of two-phase flow in swril atomizer［J］.Journal of Northeastern University (Natural Science),2009,30(7):1005-1008.(in Chinese)
[9]	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］.工程热物理学报,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)
[10]	宋大亮,周立新,陈建华,等.离心式喷嘴全流场数值模拟［J］.火箭推进,2011,37(5):36-40. SONG Daliang,ZHOU Lixin,CHEN Jianhua,et al.Numerical simulation of full flowfield of centrifugal nozzle［J］.Journal of Rocket Propulsion,2011,37(5):36-40.(in Chinese)
[11]	王成军,陈海耿,张宝诚.双路离心式喷嘴的实验与数值模拟［J］.工程热物理学报,2010,31(10):1797-1799. WANG Chengjun,CHEN Haigeng,ZHANG Baocheng.Experiment and numerical simulation of a dual-orifice pressure-swirl atomizer［J］.Journal of Engineering Thermophysics,2010,31(10):1797-1799.(in Chinese)
[12]	刘娟,孙明波,李清廉,等.基于VOF方法分析离心式喷嘴结构参数对性能影响［J］.航空动力学报,2011,26(12):2826-2833.LIU Juan,SUN Mingbo,LI Qinglian,et al.Analysis of geometric parameters influence on pressure swirl injector performance based on VOF interface method［J］.Journal of Aerospace Power,2011,26(12):2826-2833.(in Chinese)
[13]	刘娟.旋转锥形液膜破碎过程实验与仿真研究［D］.长沙:国防科学技术大学,2012. LIU Juan.Experimental and numerical simulation of the breakup process of swirling conical liquid sheet［D］.Changsha:National University of Defense Technology,2012.(in Chinese)
[14]	WANG Feng,FU Qingfei,YANG Lijun.Numerical simulation of flow in swirl injector for power-law fluid［J］.Journal of Aerospace Power,2012,27(4):890-899.
[15]	陈懋章.粘性流体动力学基础［M］.北京:高等教育出版社,2002.
[16]	于勇,张俊明,姜连田.FLUENT入门与进阶教程［M］.北京:北京理工大学出版社,2008.
[17]	李清廉.同轴式三组元喷嘴性能分析、工程应用和设计评定［D］.长沙：国防科学技术大学,2003.LI Qingian.Performace analysis,engineering application,design and evaluating of coaxial tripropellant injector［D］.Changsha:National University of Defense Technology,2003.(in Chinese)
[18]	王福军.计算流体动力学分析-CFD软件原理与应用［M］.北京:清华大学出版社,2004.
[19]	张新桥.基于离心式喷嘴的多组分燃料喷雾燃烧过程研究［D］.长沙:国防科学技术大学,2016. ZHANG Xinqiao.Research on spray combustion of multi-compoment fuel based on swirl injector［D］.Changsha:National University of Defense Technology,2016.(in Chinese)