Numerical simulation of non-contact tonometer nozzle based on COMSOL Multiphysics

被引：0

作者：

Chen, Ji ^{[1
]}

Wang, Yuan-Yuan ^{[1
]}

机构：

[1] School of Bioengineering, Chongqing University, Chongqing

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2015年 / 34卷 / 02期

关键词：

Airflow; Non-contact tonometer; Nozzle; Press;

D O I：

10.13465/j.cnki.jvs.2015.02.011

中图分类号：

学科分类号：

摘要：

In designing the non-contact tonometer, for providing the basis of numerical analysis on the designed structure and the nozzle size, a numerical model of non-contact tonometer nozzle was established by using the multi-physics coupling analysis software COMSOL Multiphysics. The size of the nozzle was optimized by modifying the parameters of radii and length. The distributions of pressure and velocity at a rated distance was analysed when the nozzle spraying mist to the cornea to get a certain plane. The simulation results show that the optimal spray parameters of the non-contact tonometer nozzle are radius of 1 mm, length of 20 mm, and the rated distance from the nozzle of 10.5mm. The experimental results show that on this condition the nozzle of the non-contact tonometer can provide an appropriate jet pressure range for intraocular pressure measurement when the spraying air flow deforms the cornea to a plane of certain diameter. ©, 2015, Chinese Vibration Engineering Society. All right reserved.

引用

页码：61 / 65

页数：4

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