喷孔长度对空化流动及空蚀特性影响研究

金江善; 赵文涛; 郭根苗; 王作群; 何志霞

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喷孔长度对空化流动及空蚀特性影响研究

更新时间：2026-03-19

- 喷孔长度对空化流动及空蚀特性影响研究
- Effects of The Hole Length of Nozzle on The In-Nozzle Cavitation Characteristics and Erosion Risk
- 西安交通大学学报 2026年
- 作者机构：
  
  1.先进船舶发动机技术全国重点实验室上海 201108
  2.船舶与海洋工程特种装备和动力系统国家工程中心，上海 201108
  3.江苏大学能源研究院，江苏镇江 212013
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： TK421
- 收稿：2026-01-30，
  
  修回：2026-03-07，
  
  录用：2026-03-10，
- 稿件说明：
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金江善, 赵文涛, 郭根苗, 等. 喷孔长度对空化流动及空蚀特性影响研究[J/OL]. 西安交通大学学报, 2026.

JIN Jiangshan, ZHAO Wentao, WANG Zuoqun, et al. Effects of The Hole Length of Nozzle on The In-Nozzle Cavitation Characteristics and Erosion Risk[J/OL]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY, 2026.
金江善, 赵文涛, 郭根苗, 等. 喷孔长度对空化流动及空蚀特性影响研究[J/OL]. 西安交通大学学报, 2026. DOI：

JIN Jiangshan, ZHAO Wentao, WANG Zuoqun, et al. Effects of The Hole Length of Nozzle on The In-Nozzle Cavitation Characteristics and Erosion Risk[J/OL]. JOURNAL OF XI’AN JIAOTONG UNIVERSITY, 2026. DOI：

摘要

为研究喷嘴内气液两相空化机理及空蚀机制，本文结合高速显微成像与数值模拟，分析了不同长度喷孔（2.04 mm、3.06 mm及4.08 mm）内空化现象及近场喷雾宏观特征瞬态演变规律，并评估了喷孔壁面的空蚀风险。结果发现：短喷孔针阀运动快、升程大，空化初生更早，易迅速发展为超空化流态，流动湍动强、喷雾锥角增大；长喷孔内几何空化受抑制，向超空化演变缓慢，但伴有间隙涡线空化，喷雾锥角增大且随着涡线空化强弱波动。云空化脱落频率随孔长增加而降低，短孔约为18000 Hz，长度增至3.06 mm和4.08 mm时分别降至15000 Hz和10000 Hz。喷孔长度对空蚀风险的影响呈现非线性，短孔因云空化强烈脱落导致大部分区域风险较高，空化发展为超空化后风险区缩小；长孔内流动旋度强，几何空化与涡线空化叠加使风险区扩大但强度减弱；中长孔空蚀风险主要集中在空化区下游并随主流沿壁面延伸，整体强度较低。喷孔长度显著影响空化流动特性，可用于协同调控流通特性、喷雾形态与空蚀风险，为喷嘴结构优化提供新思路。

Abstract

To study the cavitation and erosion mechanisms of gas-liquid two-phase flow in nozzles

this paper combines high-speed microscopic imaging and numerical simulation to analyze the transient evolution of cavitating flow and the macroscopic characteristics of near-field spray in nozzles of different lengths (2.04 mm

3.06 mm and 4.08 mm)

and to assess the erosion risk of the nozzle hole wall. Results show that the needle of the nozzle with the shortest holes moved most quickly

with the largest lift. That cavitation inception occurred earlier

readily developing into the super cavitation regime. Consequently

the flow turbulence was strong and the spray cone angle increased. By contrast

cavitation in the nozzle with the longest holes was suppressed

evolving slowly into super cavitation but accompanied by obvious vortex cavitation. The spray cone angle increased and fluctuated in response to the intensity of the vortex cavitation. The frequency of cloud cavitation shedding decreased with increasing nozzle hole length

being approximately 18000 Hz for short holes

and reducing to 15000 Hz and 10000 Hz when the hole length increased to 3.06 mm and 4.08 mm

respectively. Moreover

the influence of nozzle hole length on cavitation erosion risk was nonlinear. For the nozzle with the shortest holes

the risk was high in most areas due to strong cloud cavitation shedding

and it decreased after cavitation developed into super cavitation. In the nozzle with long holes

the strong flow vorticity and the superposition of geometric and vortex cavitation expanded the risk area but reduced its intensity. However

for medium- to long-range holes

the cavitation erosion risk was mainly concentrated downstream of the cavitation zone and extended along the wall in the mainstream

with an overall lower intensity. Nozzle hole length significantly affected cavitation flow characteristics and could be used to coordinate the regulation of flow characteristics

spray morphology and cavitation erosion risk

providing a new idea for nozzle structure optimization.

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references

HAYASHI T , SUZUKI M , IKEMOTO M . Effects of internal flow in a diesel nozzle on spray combustion [J ] . Int J Engine Res , 2013 , 14 ( 6 ): 646 - 654 .

HU B , HE Z , LI C , et al . Study of the effect of cavitation flow patterns in diesel injector nozzles on near-field spray atomization characteristics using a LES-VOF method [J ] . Int J Multiph Flow , 2024 , 174 : 104791 .

LUO K , HUANG Y , LI Y , et al . A mixed primary atomization model with quantification of aerodynamic, turbulence and cavitation effects [J ] . Int J Multiph Flow , 2024 , 170 : 104650 .

SANTOS E G , SHI J , VENKATASUBRAMANIAN R , et al . Modelling and prediction of cavitation erosion in GDi injectors operated with E100 fuel [J ] . Fuel , 2021 , 289 : 119923 .

BELLINI R , RODRIGUEZ FERNANDEZ C , KARATHANASIS I , et al . Cavitation Dynamics and Surface Erosion in Fuel Injectors Considering the Composition of Fuel Mixtures [J ] . Available SSRN 5220038 , [2026 ] .

LENG P , WU Z , HU C , et al . Cavitation instability in real-size GDI nozzle using X-ray phase-contrast imaging [J ] . Int J Heat Mass Transf , 2024 , 235 : 126137 .

QIU T , SONG X , LEI Y , et al . Influence of inlet pressure on cavitation flow in diesel nozzle [J ] . Appl Therm Eng , 2016 , 109 : 364 - 372 .

QIU T , SONG X , LEI Y , et al . Effect of back pressure on nozzle inner flow in fuel injector [J ] . Fuel , 2016 , 173 : 79 - 89 .

VIDAL A , KOLOVOS K , GOLD M R , et al . Preferential cavitation and friction-induced heating of multi-component Diesel fuel surrogates up to 450MPa [J ] . Int J Heat Mass Transf , 2021 , 166 : 120744 .

WEI Y , ZHANG H , FAN L , et al . Experimental study on influence of pressure fluctuation and cavitation characteristics of nozzle internal flow on near field spray [J ] . Fuel , 2023 , 337 : 126843 .

郭根苗，白天阳，邵壮，等．喷孔锥度和燃油温度对柴油喷嘴内空化流动特性的影响［J］．西安交通大学学报， 2022 ， 56 ( 8 )： 131 - 140 ．

GUO G , BAI T , SHAO Z , et al . Effects of nozzle orifice taper and fuel temperature on cavitating flow characteristics inside a diesel injector nozzle [J ] . Journal of Xi’an Jiaotong University , 2022 , 56 ( 8 ): 131 - 140 .

QUIST N A , MATLOK S , SAJIN-HENNINGSEN S , et al . Numerical investigation on the effect of physical properties of alternative fuels on in-nozzle cavitation in a full-scale injector for a two-stroke marine engine [J ] . Int J Multiph Flow , 2025 : 105523 .

路泽民，蔡雨嫣，洪欢欢，等．流体性质对涡旋式水力空化发生器空化性能的影响分析［J］．机械制造， 2025 ， 63 ( 11 )： 17 - 22 ．

LU Z , CAI Y , HONG H , et al . Analysis of the effects of fluid properties on the cavitation performance of a vortex hydraulic cavitation generator [J ] . Machinery Manufacturing , 2025 , 63 ( 11 ): 17 - 22 .

胡碧荷，黄云龙，王健权，等．混合燃油在喷嘴内线空化流动特性及喷雾研究［J］．内燃机学报， 2025 ， 43 ( 1 )： 29 - 37 ．

HU B , HUANG Y , WANG J , et al . Study on string cavitation flow characteristics inside the nozzle and spray behavior of blended fuels [J ] . Journal of Internal Combustion Engines , 2025 , 43 ( 1 ): 29 - 37 .

HUANG W , YANG Y , HE Z , et al . Experimental study on cavitation pattern and near-field spray characteristics of methanol in the scaled-up fuel injection nozzle [J ] . Exp Therm Fluid Sci , 2025 : 111624 .

GUO G , BAI T , HE Z , et al . Assessment of influences of needle lift and hole height on string cavitation in liquid injection [J ] . Fuel , 2023 , 347 : 128386 .

KIM B , PARK S . Study on in-nozzle flow and spray behavior characteristics under various needle positions and length-to-width ratios of nozzle orifice using a transparent acrylic nozzle [J ] . Int J Heat Mass Transf , 2019 , 143 : 118478 .

CHANG M , PARK J , KIM B , et al . Effect of sac-volume on the relationship among ball behavior, injection and initial spray characteristics of ultra-high pressure GDI injector [J ] . Fuel , 2021 , 285 : 119089 .

LI H , HAN D , XU S , et al . Numerical Investigation of the Effects of Nozzle Geometry on Internal Cavitation Flow and Near-Field Spray [J ] . Case Stud Therm Eng , 2025 : 107541 .

MOLINA S , SALVADOR F J , CARRERES M , et al . A computational investigation on the influence of the use of elliptical orifices on the inner nozzle flow and cavitation development in diesel injector nozzles [J ] . Energy Convers Manag , 2014 , 79 : 114 - 127 .

SALVADOR F J , PASTOR J M , GÓMEZ-SORIANO J , et al . Performance of elliptical nozzles on the spray dynamics of convergent and constant section nozzles by means of a Σ-Y coupled model [J ] . Fuel , 2023 , 346 : 128259 .

JI H , LI R , YUAN W , et al . Cfd-Based Flow Field Study of Triple-Crossed Elliptical Injector Nozzle [J ] . Available SSRN 5266472 , [2026 ] .

LI X , CHENG X , HOU W , et al . Study on the coupling mechanism of nozzle structure-cavitation impact under submerged environment [J ] . Ultrason Sonochem , 2025 : 107632 .

徐硕涵，赵凯，白天阳，等．喷嘴内流影响下的喷油器性能参数敏感性分析［J］．西安交通大学学报， 2025 ， 59 ( 5 )： 189 - 197 ．

XU S , ZHAO K , BAI T , et al . Sensitivity analysis of injector performance parameters under the influence of in-nozzle flow [J ] . Journal of Xi’an Jiaotong University , 2025 , 59 ( 5 ): 189 - 197 .

HE Z , ZHANG Z , GUO G , et al . Visual experiment of transient cavitating flow characteristics in the real-size diesel injector nozzle [J ] . Int Commun Heat Mass Transf , 2016 , 78 : 13 - 20 .

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