航天推进技术研究院主办
[1]吴高杨,郑 刚,聂万胜,等.螺旋离心式喷嘴内部流动过程数值仿真研究[J].火箭推进,2015,41(04):13-18.
WU Gaoyang,ZHENG Gang,NIE Wansheng,et al.Numerical simulation of flow process in screw centrifugal nozzle[J].Journal of Rocket Propulsion,2015,41(04):13-18.
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WU Gaoyang,ZHENG Gang,NIE Wansheng,et al.Numerical simulation of flow process in screw centrifugal nozzle[J].Journal of Rocket Propulsion,2015,41(04):13-18.
螺旋离心式喷嘴内部流动过程数值仿真研究
《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]
卷:
41
期数:
2015年04期
页码:
13-18
栏目:
研究与设计
出版日期:
2015-09-30
- Title:
- Numerical simulation of flow process in screw centrifugal nozzle
- 分类号:
- V434-34
- 文献标志码:
- A
- 摘要:
- 基于VOF模型对螺旋离心式喷嘴内部流动进行了三维全尺寸数值仿真研究，重点分析了液相在喷嘴内部的流动过程以及喷嘴内部各区域的速度、压力分布。结果表明：液相进入螺旋槽后，在螺旋槽与入口联接处形成气穴，气穴随着液相流入逐渐变小；喷嘴内部流场稳定后，在旋流中心区域形成稳定气核，喷嘴出口段液膜厚度沿轴向逐渐减小；在旋流区域液相最大切向速度位于贴近气液交界面附近区域，并且切向速度沿轴向方向逐渐减小；喷嘴各部分对总压损失的影响由大到小分别是收敛段、螺旋槽、等直段和旋流腔。
- Abstract:
- The volume of fluid (VOF) model was used to carry out the 3D numerical simulation of the flow process inside the screw centrifugal nozzle. The flow process of liquid phase in the nozzle and the distribution of velocity and pressure in each area inside the nozzle were analyzed emphatically. The results show a cavitation is formed in the joint of spiral groove and entrance when the liquid phase enters into spiral groove, and the size of cavitation decreases as the liquid phase flows into the nozzle; A stable gas core is formed in the center of spiral flow, and the liquid film thickness at the nozzle exit reduce gradually along the axial direction when flow field in the nozzle is stable; The maximum tangential velocity of liquid phase in the liquid flow region is near the gas-liquid interface and reduce along the axial direction; The impact of each part in the nozzle on total pressure loss (from large
参考文献/References:
[1]KALITAN D M, SALGUES D. Experiment liquid rocket swirl coaxial injector study using non-intrusive optical techniques, AIAA 2005-4299[R]. USA: AIAA 2005.
[2]DONJUN K. Effect of ambient gas density on spray characteristics of swirling liquid sheets[J]. Journal of Propulsion and power, 2007, 23(3): 603-611.
[3]田章福, 吴继平, 陶玉静, 等. 气液同轴式喷嘴雾化特性的试验[J]. 国防科技大学学报, 2006, 28(4): 10-13.
[4]赵大勇, 李伟仲. VOF方法中几种界面重构技术的比较[J]. 热科学技术, 2003, 2(4): 318-323.
[5]GOPALA V R. Volume of fluids methods for immiscible- fluid and free-surface flows[J]. Chemical Engineering Jour- nal, 2008, 141(1-3): 204-221.
[6]岳明, 徐航, 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.
[7]刘娟, 李清廉, 王振国. 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): 1986-1994.
[8]宋大亮, 周立新, 陈建华. 离心式喷嘴全流场数值模拟[J]. 火箭推进, 2011, 37(5): 36-40.
[9]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.
[10]IBBRAHIM A A, JOG M A. Nonlinear breakup model for a liquid sheet emanating from a pressure-swirl atomizer[J]. Journal of Engineering for Gas Turbines and Power, 2007, 129(4): 945-953.
[11]ALHENDAL Y. VOF simulation of marangoni flow gas bubbles in 2D-axisymmetric column[J]. Procedia Com- puter Science, 2010, 1(1): 673-680.
[12]DATTA A, SO S K. Numerical prediction of air core diameter, coefficient of discharge and spray cone angle of a swirl spray pressure nozzle[J]. International Journal of Heat and Fluid Flow, 2000, 4(21): 412-419.
[13]BALASUBRAMANYAM M S, CHEN C P. Numerical design studies on internal flow characteristics of LOX/CH4 swirl injector, AIAA 2009-5040[R]. USA: AIAA, 2009.
相似文献/References:
[1]吴高杨,苏凌宇,聂万胜,等.螺旋离心式喷嘴雾化特性试验与仿真研究[J].火箭推进,2015,41(06):21.
WU Gaoyang,SU Lingyu,NIE Wansheng,et al.Experiment and simulation on atomization
characteristics of screw centrifugal nozzle[J].Journal of Rocket Propulsion,2015,41(04):21.
备注/Memo
收稿日期：2015-01-29；修回日期：2015-04-16 基金项目：国家自然科学基金资助项目（91441123） 作者简介：吴高杨（1991—），男，硕士，研究领域为液体火箭发动机
更新日期/Last Update:
1900-01-01