Analysis of spray characteristics of a jet-film injection element based on Voronoi tessellation

Chengming He; Peng Zhang; Zhixia He; Lianjie Yue

doi:10.1016/j.actaastro.2023.02.006

Analysis of spray characteristics of a jet-film injection element based on Voronoi tessellation

Chengming He, Peng Zhang, Zhixia He, Lianjie Yue^*

^*Corresponding author for this work

Department of Mechanical Engineering

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

9 Citations (Scopus)

Abstract

The present paper presents a computational study based on a validated Volume-of-Fluid method on the effects of film thickness and film width on spray characteristics for the simplified jet-film injection element with varying mass flow rate conditions. First, the spray characteristics of a typical jet-film collision were analyzed in terms of the spatial distribution of Sauter Mean Diameter and Voronoi tessellation. Both the Voronoi diagram and the Sauter Mean Diameter contour are useful to evaluate the spray characteristics because they show two different aspects of the sprays. Second, the jet-film spray characteristics were analyzed by decreasing either film thickness or film width to change the mass flow rate. The results show that decreasing film width results in approximately insensitive spray angle and improved uniformity of droplet distribution for different throttleable levels. The present computational results verified our design concept that adopting traditional jet-film injection at a large mass flow rate and modified jet-jet injection at a small mass flow rate to maintain good spray performance during the entire throttleable levels. © 2023 IAA

Original language	English
Pages (from-to)	100-113
Journal	Acta Astronautica
Volume	206
Online published	10 Feb 2023
DOIs	https://doi.org/10.1016/j.actaastro.2023.02.006
Publication status	Published - May 2023

Funding

This work was supported by National Science Foundation of China (Grant No. 12102437, Grant No. 52176134, and Grant No. U2141220). The work at City University of Hong Kong was partially supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. CityU15222421).

Research Keywords

Jet-film injection
Liquid rocket engine
Pintle injector
Spray characteristics
Voronoi tessellation

RGC Funding Information

RGC-funded

Access Output

10.1016/j.actaastro.2023.02.006

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{7ab9db4eabf5405dbf7db12956b9151f,

title = "Analysis of spray characteristics of a jet-film injection element based on Voronoi tessellation",

abstract = "The present paper presents a computational study based on a validated Volume-of-Fluid method on the effects of film thickness and film width on spray characteristics for the simplified jet-film injection element with varying mass flow rate conditions. First, the spray characteristics of a typical jet-film collision were analyzed in terms of the spatial distribution of Sauter Mean Diameter and Voronoi tessellation. Both the Voronoi diagram and the Sauter Mean Diameter contour are useful to evaluate the spray characteristics because they show two different aspects of the sprays. Second, the jet-film spray characteristics were analyzed by decreasing either film thickness or film width to change the mass flow rate. The results show that decreasing film width results in approximately insensitive spray angle and improved uniformity of droplet distribution for different throttleable levels. The present computational results verified our design concept that adopting traditional jet-film injection at a large mass flow rate and modified jet-jet injection at a small mass flow rate to maintain good spray performance during the entire throttleable levels. {\textcopyright} 2023 IAA",

keywords = "Jet-film injection, Liquid rocket engine, Pintle injector, Spray characteristics, Voronoi tessellation",

author = "Chengming He and Peng Zhang and Zhixia He and Lianjie Yue",

year = "2023",

month = may,

doi = "10.1016/j.actaastro.2023.02.006",

language = "English",

volume = "206",

pages = "100--113",

journal = "Acta Astronautica",

issn = "0094-5765",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Analysis of spray characteristics of a jet-film injection element based on Voronoi tessellation

AU - He, Chengming

AU - Zhang, Peng

AU - He, Zhixia

AU - Yue, Lianjie

PY - 2023/5

Y1 - 2023/5

N2 - The present paper presents a computational study based on a validated Volume-of-Fluid method on the effects of film thickness and film width on spray characteristics for the simplified jet-film injection element with varying mass flow rate conditions. First, the spray characteristics of a typical jet-film collision were analyzed in terms of the spatial distribution of Sauter Mean Diameter and Voronoi tessellation. Both the Voronoi diagram and the Sauter Mean Diameter contour are useful to evaluate the spray characteristics because they show two different aspects of the sprays. Second, the jet-film spray characteristics were analyzed by decreasing either film thickness or film width to change the mass flow rate. The results show that decreasing film width results in approximately insensitive spray angle and improved uniformity of droplet distribution for different throttleable levels. The present computational results verified our design concept that adopting traditional jet-film injection at a large mass flow rate and modified jet-jet injection at a small mass flow rate to maintain good spray performance during the entire throttleable levels. © 2023 IAA

AB - The present paper presents a computational study based on a validated Volume-of-Fluid method on the effects of film thickness and film width on spray characteristics for the simplified jet-film injection element with varying mass flow rate conditions. First, the spray characteristics of a typical jet-film collision were analyzed in terms of the spatial distribution of Sauter Mean Diameter and Voronoi tessellation. Both the Voronoi diagram and the Sauter Mean Diameter contour are useful to evaluate the spray characteristics because they show two different aspects of the sprays. Second, the jet-film spray characteristics were analyzed by decreasing either film thickness or film width to change the mass flow rate. The results show that decreasing film width results in approximately insensitive spray angle and improved uniformity of droplet distribution for different throttleable levels. The present computational results verified our design concept that adopting traditional jet-film injection at a large mass flow rate and modified jet-jet injection at a small mass flow rate to maintain good spray performance during the entire throttleable levels. © 2023 IAA

KW - Jet-film injection

KW - Liquid rocket engine

KW - Pintle injector

KW - Spray characteristics

KW - Voronoi tessellation

UR - http://www.scopus.com/inward/record.url?scp=85148322679&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85148322679&origin=recordpage

U2 - 10.1016/j.actaastro.2023.02.006

DO - 10.1016/j.actaastro.2023.02.006

M3 - RGC 21 - Publication in refereed journal

SN - 0094-5765

VL - 206

SP - 100

EP - 113

JO - Acta Astronautica

JF - Acta Astronautica

ER -

Analysis of spray characteristics of a jet-film injection element based on Voronoi tessellation

Abstract

Funding

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

GRF: A Theoretical, Experimental, and Computational Framework for Droplet Collision Modeling in Lagrangian-Eulerian Simulation of Sprays

Cite this

Analysis of spray characteristics of a jet-film injection element based on Voronoi tessellation

Abstract

Funding

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

GRF: A Theoretical, Experimental, and Computational Framework for Droplet Collision Modeling in Lagrangian-Eulerian Simulation of Sprays

Cite this