切向孔直径精度对离心喷嘴性能影响

张亚; 刘倩; 谢恒

doi:10.13224/j.cnki.jasp.20200532

切向孔直径精度对离心喷嘴性能影响

doi: 10.13224/j.cnki.jasp.20200532

张亚^1,2,
刘倩^1,2,
谢恒¹

1.
中国航天科技集团有限公司北京航天动力研究所，北京 100076
2.
中国航天科技集团有限公司低温液体推进技术实验室，北京 100076

详细信息

作者简介:
张亚（1983-），男，高级工程师，硕士，主要从事氢氧火箭发动机和燃料电池设计、仿真等研究工作。

中图分类号: V434.1
计量
- 文章访问数: 402
- HTML浏览量: 171
- PDF量: 116
- 被引次数: 0
出版历程
- 收稿日期: 2020-12-14
- 刊出日期: 2021-12-28

Influence of precision of tangential port diameter on performance of swirl atomizer

ZHANG Ya^1,2,
LIU Qian^1,2,
XIE Heng¹

1.
Beijing Aerospace Propulsion Institute，China Aerospace Science and Technology Corporation，Beijing 100076，China
2.
Laboratory of Cryogenic Liquid Propellants，China Aerospace Science and Technology Corporation，Beijing 100076，China

摘要

摘要: 为解决离心喷嘴流量系数理论计算与试验偏差普遍较大的问题，采用Fluent两相流模型计算了不同切向孔直径下的喷雾锥角、流量系数等性能参数，分析发现切向孔直径加工精度对离心喷嘴流量系数有较显著的影响。通过塞规测量了4个喷嘴的切向孔直径，利用切向孔直径测量平均值建立几何模型，计算了较大范围不同压降下的喷嘴性能，并与试验结果进行了对比。模型计算结果和试验数据吻合较好，喷雾锥角与试验偏差小于1°，流量系数偏差小于4.2%。
- 离心喷嘴 /
- 两相流 /
- 计算流体力学 /
- 切向孔 /
- 加工精度
Abstract: In order to solve the problem of large deviation between theoretical calculation and test data of discharge coefficient of swirl atomizer，a two-phase flow computational model with Fluent was taken to investigate the performance of a swirl atomizer.The influences of machining precision of tangential port diameter on performance parameters，including spray angle and discharge coefficient were simulated.The results showed that the discharge coefficient was influenced obviously by the tangential port diameter precision.The average diameters of tangential ports of 4 swirl atomizers were measured using plug gauges.Models with measured average diameters were taken to evaluate the performance of the swirl atomizers under a wide range of different pressure drops，and the result was compared with test data.The computational results agreed well with the test data，the error of spray angle was less than 1°，and the discharge coefficient difference was within 4.2%.
- swirl atomizer /
- two phase flow /
- computational fluid dynamics /
- tangential port /
- machining precision

HTML

参考文献(18)

[1]	刘国球，任汉芬，朱宁昌，等.液体火箭发动机原理[M].北京：宇航出版社，1993.
[2]	葛明龙.离心式喷嘴理论的改进[J].宇航学报，1981,2（2）：85-96.
[3]	NOVIKOV I I.Atomization of liquids by centrifugal nozzles[J].Journal of Technical Physics，1948,18（3）:345-354.
[4]	TAYLOR G I.The boundary layer in the converging nozzle of a swirl atomizer[J].The Quarterly Journal of Mechanics and Applied Mathematics,1949,3（2）:129-139.
[5]	DOMBROWSKI N，HASSON D.The flow characteristics of swirl spray pressure nozzles with low viscosity liquids[J].AIChE Journal,1969,15（4）:604-611.
[6]	RIZK N K，LEFEBVRE A H.Internal flow characteristics of simplex swirl atomizers[J].Journal of Propulsion and Power，1985，1（3）:193-199.
[7]	RIZK N K，LEFEBVRE A H.Spray characteristics of simplex swirl atomizers[R].Easton City，PA，US:Purdue University，1983.
[8]	RIZK N K，LEFEBVRE A H.Prediction of velocity coefficient and spray cone angle for simplex swirl atomizers[R].London，England:the 3rd International Conference on Liquid Atomization and Spray Systems，1986.
[9]	RIZK N K，LEFEBVRE A H.Influence of air blast atomizer design features on mean drop size[J].AIAA Journal，1983，21（8）:1132-1142.
[10]	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.
[11]	陈晨，杨样，高宏力，等.敞口式离心喷嘴内部及近喷口区域的流动特性[J].航空动力学报，2016,31（12）：2988-2995.
[12]	张永良，王宝瑞，孔文俊，等.离心喷嘴实验与流场结构的数值模拟[J].工程热物理学报，2013,34（4）:760-764.
[13]	宋耀宇.离心喷嘴燃油流动特性研究[D].南京：南京航空航天大学，2015.
[14]	DATTA A，SO S K.Numerical prediction of air core diameter，coeffcient of discharge and spray cone angle of a swirl spray pressure nozzle[J].International Journal of Heat and Fluid Flow，2000,21（4）:412-419.
[15]	BALASUBRAMANYAM M S，CHEN C P.Numerical design studies on internal flow characteristics of LOX/CH₄ swirl injector[R].AIAA 2009-5040,2009.
[16]	.浙江大学学报:工学版，2009，43（5）:968-972.
[17]	.西北工业大学学报，2015，33（3）:388-394.
[18]	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.