Jinping Zha, Liangchao Shang, Winston Duo Wu, Xiao Dong Chen, Jie Xiao
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引用次数: 0
Abstract
A velocity coupling method is presented for numerical investigation of droplet formation through glass nozzles driven by piezoelectric pulsation. The key idea is to first model the phenomena inside and outside of the nozzle separately. This approach allows in-nozzle and out-nozzle models to focus on their respective modeling challenges, e.g., coupled multiphysics beyond fluid mechanics for the former and liquid–air interface tracking for the latter. After coupling them through velocity mapping, the complete atomization process can be simulated. The results show that periodic pulsation of the piezoceramic component attached to the glass capillary drives regular displacement of the capillary wall, leading to a rhythmic change in the chamber volume and hence the flow rate ejected from the nozzle. Such disturbance results in the breakup of a liquid jet into a stream of droplets. To demonstrate model effectiveness, the impact of disturbance frequency on atomization has been analyzed.
期刊介绍:
ndustrial & Engineering Chemistry, with variations in title and format, has been published since 1909 by the American Chemical Society. Industrial & Engineering Chemistry Research is a weekly publication that reports industrial and academic research in the broad fields of applied chemistry and chemical engineering with special focus on fundamentals, processes, and products.