Computational fluid dynamics of urinary catheterization
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Date
2018-05
Authors
Farah Aisyah Nazry
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Abstract
Urethral catheterization is a medical procedure that helps the drainage of urinary bladder
for patients that have difficulties urinating naturally.An urinary catheter is a flexible tube
that collects urine from human bladders, straight to the drainage bag. There are many
complications faced by the patients such as urinary tract infections (UTIs) ,bladder
spasms,leakage,blood in catheter tube and bladder stones.Thus,this project will determine
the best diameter and configuration of the catheter to optimize the mass flow rate using
Computational Fluid Dynamic (CFD) in ANSYS Fluent software.To mimic the
characteristics of urine,instead of using water as fluid (water has the closest characteristic
as urine).The objectives of this simulation are tto investigate the effect of diameters and
configuration of urinary catheter tube in urinary catheterization system using
Computational Fluid Dynamics (CFD) technique and to optimize the diameter and
configuration of the urinary catheter tube.From five different configurations, an L-shaped
configuration showed the best mass flow rate and pressure gradient. This parameters will
help in preventing any encrustration happening on the wall of catheter. Subsequently,
from this configuration, five different cases that represented five different diameters were
then simulated to find the most releven diameter for human usage. From all the
simulations a catheter with diameter CH18 in an L-shaped configuration showed the best
result possible. In conclusion, understanding the parameters for a safe and healthy usage
of urinary catheter are important for future application.