| Item type |
デフォルト(1) |
| 公開日 |
2025-06-13 |
| タイトル |
|
|
タイトル |
A numerical study on the in-nozzle flow and near-field spray dynamics of spirally grooved hole nozzles: Effects of injection pressure and length/diameter ratio |
|
言語 |
en |
| 作成者 |
Leng, Xianyin
Xing, Mochen
Deng, Yicheng
Jin, Yu
He, Zhixia
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in［ PHYSICS OF FLUIDS ］ and may be found at ［https://doi.org/10.1063/5.0239522］ |
| 権利情報 |
|
|
言語 |
en |
|
権利情報 |
This is not the published version. Please cite only the published version. |
| 権利情報 |
|
|
言語 |
ja |
|
権利情報 |
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。 |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Diesel nozzle |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Spirally grooved hole nozzle |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Near field jet |
| 主題 |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
VOF to DPM |
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
The nozzle geometry in internal combustion engines plays a critical role in determining cavitating flow characteristics, which affect in-cylinder atomization, combustion, and engine performance. In this study, the multi-phase flow inside and outside spirally grooved hole nozzles were simulated using the Volume of Fluid model coupled with the Discrete Phase Model. This approach allowed for detailed examination of how injection pressure and length-to-diameter (L/D) ratio influence cavitation and atomization. The results showed that the nozzles with spiral grooves structure can increase the near-field spreading angle of the jet, but cavitation can negatively affect the distribution of droplets by decreasing the radial velocity. Moreover, when the L/D ratio is decreased from 5 to 2.5, the radial momentum intensity of the internal flow increased by 80%, leading to enhanced atomization. Notably, increasing the injection pressure from 150 to 250 MPa and reducing the L/D ratio from 5 to 2.5 both achieved similar improvements in fuel atomization, resulting in a 10% reduction in the Sauter mean diameter of droplets. A lower L/D ratio enhances atomization by shortening the flow path and increasing the radial momentum ratio, whereas higher injection pressure improves atomization by increasing jet kinetic energy and enhancing fluid–air interaction. |
|
言語 |
en |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
This research was supported by the National Natural Science Foundation of China (No. 52376113). |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
American Institute of Physics |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| 関連情報 |
|
|
関連タイプ |
isVersionOf |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1063/5.0239522 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1070-6631 |
| 書誌情報 |
en : PHYSICS OF FLUIDS
巻 36,
号 11,
p. 115190,
発行日 2024-11-20
|
PF_36_11_115190.pdf (3.4 MB)
