Numerical simulation of non-contact tonometer nozzle based on COMSOL Multiphysics
CHEN Ji，WANG Yuan-yuan
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School of Bioengineering, Chongqing University, Chongqing 400044,China
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History+
Received
Revised
Published
2013-08-29
2014-01-21
2015-01-25
Issue Date
2015-02-25
Abstract
When in designing the non-contact tonometer provides the basis of the numerical analysis in the design structure and size of the nozzle, A numerical model of Non-contact tonometer nozzle using multi-physics coupling analysis software COMSOL Multiphysics was established. And analysising the parameter design of non-contact tonometer nozzle, Which can optimize the size of the nozzle by changing the radii and length. The distribution of pressure and velocity at a rated distance was studied when the nozzle spray cornea at a certain plane. The simulation results show that the optimum of the non-contact tonometer nozzle is located at radius of 1 mm, and 20 mm in length, the rated distance from the nozzle is 10.5mm. The experimental results show that at this condition the nozzle of the Non-contact tonometer can provides an appropriate jet pressure range for the intraocular pressure measurement when the spraying air flow deform the cornea to a certain diameter plane.
CHEN Ji;WANG Yuan-yuan.
Numerical simulation of non-contact tonometer nozzle based on COMSOL Multiphysics[J]. Journal of Vibration and Shock, 2015, 34(2): 61-65
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