火箭推进2024，Vol.50Issue(3)：42-52,11.DOI:10.3969/j.issn.1672-9374.2024.03.005
缩进长度对液液同轴离心喷嘴雾化过程的影响
Effect of indentation length of liquid-liquid coaxial swirling injector on spray process
王壮 1党枭睿 2胡海峰 1卞香港1
作者信息
- 1. 西安航天动力研究所 液体火箭发动机技术重点实验室,陕西 西安 710100
- 2. 西安航天动力研究所,陕西 西安 710100
- 折叠
摘要
Abstract
In order to investigate the effect of indentation length of liquid-liquid coaxial swirling inject on spray process,the detailed characteristics of the internal flow was obtained through numerical simulation,using N2 O4 as the working fluid for the central nozzle and UDMH as the working fluid for the outer nozzle.Besides,the effect of the N on the spray angle was obtained.The result shows that when N<1,the spray angle increase at first and then decrease.When N>1,the spray angle increases slightly.In addition,when N=0,a low-pressure area will be formed between UDMH and N2 O4 liquid film,which will make the two liquid films adsorb each other,resulting in a decrease in UDMH liquid film angle and an increase in N2 O4 liquid film.And the final spray angle is an intermediate value between the outer nozzle and the central nozzle spray angle.When N>0.85,UDMH and N2 O4 will mix significantly in the indentation chamber,and the deformation of the liquid film intensifies.When N>1.27,the chamber will rectify the mixed fluid,and thus the breaking distance increases.关键词
缩进数/液液同轴离心喷嘴/雾化锥角/流场结构/数值模拟Key words
indentation length/liquid-liquid coaxial swirling injector/spray angle/flow field struture/numerical simulation分类
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王壮,党枭睿,胡海峰,卞香港..缩进长度对液液同轴离心喷嘴雾化过程的影响[J].火箭推进,2024,50(3):42-52,11.
