KH-RT模型在横向来流作用下射流雾化过程的应用

推进技术 ›› 2017, Vol. 38 ›› Issue (7): 1595-1602.

KH-RT模型在横向来流作用下射流雾化过程的应用

刘日超¹,乐嘉陵²,杨顺华²,郑忠华²,宋文艳¹,黄渊²

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,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,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:刘日超，男，博士生，研究领域为燃烧室燃烧与流动。
基金资助:
国家自然科学基金(91641205)。

Application of KH-RT Model in Process of Spray Jet Breakup in Across-Flow

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

Published:2021-08-15

摘要/Abstract

摘要： 针对射流柱在横向来流下的破碎过程，采用欧拉-拉格朗日模型对其进行了数值模拟。其中射流柱的一次雾化采用WAVE模型，颗粒的二次雾化采用KH-RT混合模型。计算得到的液滴颗粒平均直径在70μm左右，还得到了雾化场的喷雾结构、速度分布、索特尔直径分布，以及射流柱在不同来流速度下破碎过程等。同时通过采用不同二次破碎模型，分别将计算结果与试验结果进行对比，结果表明采用的KH-RT混合雾化模型在一定程度上能够更加真实地反映雾化过程，并较好地捕捉射流雾化特点。

关键词: 混合模型；射流；雾化；横向来流

Abstract: The process of broke of liquid jet in cross-flow was simulated with Eulerian-Lagrangian model. WAVE model was used to simulate primary atomization of liquid jet，and KH-RT hybrid model used for secondary breakup of liquid droplet. The liquid particles average diameter obtained is 70μm approximately，and the spray configuration，velocity distribution，SMD distribution，the process of jets breakup in different air velocity are obtained too. And at the same time results simulated by different second breakup models are compared with experiment. Results indicate that the KH-RT hybrid model could reflect the atomization process more really，and grab the characteristic of atomization successfully.

Key words: Hybrid model；Jet；Atomization；Across-flow

刘日超,乐嘉陵,杨顺华,郑忠华,宋文艳,黄渊. KH-RT模型在横向来流作用下射流雾化过程的应用[J]. 推进技术, 2017, 38(7): 1595-1602.

LIU Ri-chao¹,LE Jia-ling²,YANG Shun-hua²,ZHENG Zhong-hua²,SONG Wen-yan¹,HUANG Yuan². Application of KH-RT Model in Process of Spray Jet Breakup in Across-Flow[J]. Journal of Propulsion Technology, 2017, 38(7): 1595-1602.

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