首页|电磁驱动膜片式微滴喷射数值模拟与试验

电磁驱动膜片式微滴喷射数值模拟与试验

扫码查看
针对目前微液滴喷头问题,设计了一种基于电磁驱动的微滴喷射装置.建立了多物理场耦合喷射仿真模型,通过数值模拟分析了驱动电压、流体粘度对微滴体积和喷射速度的影响.并利用搭建的喷头试验平台进行微滴喷射试验.结果表明:微滴体积以及喷射速度随着驱动电压幅值的增大而增大,随着流体粘度的增大液滴的断裂时间延后且液滴的拖尾逐渐减短;在喷孔直径为0.12mm、驱动电压21V、粘度0.001mPa·s时可按需生成体积约5.7nL的均匀微滴;微滴喷射试验结果与仿真结果吻合较好,说明提出的数值模型及方法是可行的,且验证了设计的电磁驱动膜片式喷头生成稳定液滴的可行性.
Numerical Simulation and Experimental Study of Electromagnetic Driven Droplet Jetting
Aiming at the current microdroplet nozzle problem,a microdroplet spraying device based on electromagnetic drive is designed.A multi-physical field coupled spray simulation model is established,and the influence of the driving voltage and fluid viscosity on the microdroplet volume and spray velocity are analyzed through numerical simulation.The microdroplet spraying test is carried out using the built nozzle test platform.The results show that the droplet volume and jetting velocity increase with the increase of driving voltage amplitude,the droplet breakage time is delayed with the increase of fluid viscosity,and the droplet trailing is gradually shortened.The uniform droplets with a volume of approximately 5.7 nL can be generated on demand when the diameter of the nozzle hole is 0.12 mm,the driving voltage is 21 V and the viscosity is 0.001 mPa·s.The results of the microdroplet spray test and the simulation results match well,indicating that the proposed numerical model and method can be used to analyze the influence of the driving voltage and fluid viscosity on the droplet volume and jetting velocity by numerical simulation.It shows that the proposed numerical model and method are feasible,and verifies the feasibility of the designed electromagnetic drive diaphragm nozzle to generate stable droplets.

electromagnetic drivemulti-physical field simulationmicro spray experiment

梁海明、韦相福、林明松、殷梦闯

展开 >

广西交通职业技术学院 汽车工程学院,南宁 530004

广西大学 机械工程学院,南宁 530004

电磁驱动 多物理场仿真 微滴喷实验

广西自然科学基金项目2023年度广西高校中青年教师科研基础能力提升项目

2020GXNSFAA1591562023KY1173

2024

机械设计与研究
上海交通大学

机械设计与研究

CSTPCD北大核心
影响因子:0.531
ISSN:1006-2343
年,卷(期):2024.40(3)