|Table of Contents|

Comparative experimental of spray characteristics for gas liquid coaxial swirl single and double injectors(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2023年06期
Page:
38-45
Research Field:
目次
Publishing date:

Info

Title:
Comparative experimental of spray characteristics for gas liquid coaxial swirl single and double injectors
Author(s):
KANG Jinxin;  TONG Yiheng;  GAO Yuchao;  XIE Jiahao;  GUO Kangkang;  FENG Songjiang
Space Engineering University, Beijing 101416, China
Keywords:
liquid-centered;  coaxial swirl injector;  SMD;  spray angle;  double injectors
PACS:
V19
DOI:
-
Abstract:
Presents an experimental study of the spray characteristics of liquid-centred coaxial swirl single and double injectors.High-speed photography was applied to capture the transient spray process and the corresponding atomization cone angles were obtained by a Matlab program and compared with a single injector. And a laser particle analyzer was used to measure the Sauter mean diameter(SMD)in the near-field region of the dual injectors, which was used to analyze the variation mechanism in the atomization cone angle between the single and dual injectors.The results shows that with the increase of vapor liquid ratio, the atomisation cone angle of the double injectors increases compared to the single injector.The complex turbulence zone formed between the double injectors results in the sauter mean diameter between the injectors being smaller than the outer side of the injector.The smaller particle size between the injectors is susceptible to the winding and sucking effect of the turbulence zone, resulting in an increase in the spray cone angle inside the double injectors.

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