Computational Fluid Dynamic Modelling And
Simulation Evaluation Of The Plume Evacuation
Device Efficiencies
Author(s)
F. Farshad, H. Rieke, L. C. LaHaye & S. C. Nulu
Abstract
The purpose of our work has been to evaluate the fluid flow dynamics of distal
and proximal handheld plume evacuation devices used during LASIK eye
surgery using Computational Fluid Dynamic (CFD) Modelling.
Fluid flow dynamics studies using CFD simulations were conducted on a
proximal plume evacuator, LAHayeSIK⢠surgical device, and on the VISX Star
S3, which is a distal large volume plume evacuation device. The resulting data
was compared and analyzed with experimental data.
CFD results show that the proximal plume evacuation system generated a
uniform laminar airflow velocity of 0.94 m/s across the corneal surface as
compared to 1.3 m/s reported by the distal evacuation system. Flow profiles
indicate high shear regions resulting in vortex formations, for the large volume
distal evacuator.
The CFD simulations conducted to determine the airflow profiles generated
by the two surgical plume evacuation devices concur with data obtained from
experiments. Flow patterns simulated by the CFD modeling, indicate that the
proximal plume evacuation devices generate a gentle laminar airflow profiles
over the stromal surface. On the other hand, the distal large volume plume
evacuators generate multiple regions of varying air flow velocities contributing
to ineffective plume capture.
Keywords: computational fluid dynamics, fluent, LAHayeSIKTM, LASIK, plume
evacuation, CFD simulation.
Keywords
computational fluid dynamics, fluent, LAHayeSIKTM, LASIK, plumeevacuation, CFD simulation.
Related Book
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