medical equipment-02
TRANSCRIPT
Minimal contact open oxygen delivery system
Introduction
This work contains the CFD conceptual analysis for diffuser cup .
The purpose of this work is to examine the effects of the breathing with oxygen diffuser cup.
Simulation tests the rise of oxygen resulting from oxygen diffuser cup .
Oxygen flow from the diffuser cup is:0.01[L/s]
The Navier–Stokes Equations
Equations and Uniqueness Conditions
Assumptions Not compressible flow.
the no-slip condition for viscous fluids states that at a solid boundary, the fluid will have zero velocity relative to the boundary.
Infinite rigid bodies
Environmental Conditions and Assumptions
The analysis was done in a steady state conditions.
Ambient temperature: 20 oC
Outlet pressure: 1 ATM
breathing cycle:
Breathing gas mixture
inhalation exhalation
20% 16.40% Oxygen
0.03% 4.10% Carbon dioxide
79% 75% Nitrogen
Insignificant
6% Water vapor
Mechanical Description
Simplified Model
oxygen diffuser
cup
Material properties
UNITS VALUE Properties of AIR
(kg/mol) 1.399 Molecular mass
Material properties
UNITS VALUE Properties of Oxygen
(kg/mol) 0.032 Molecular mass
Material properties
UNITS VALUE Properties of Nitrogen
(kg/mol) 1.3996 Molecular mass
Material properties
UNITS VALUE Properties of Carbon dioxide
(kg/mol) 0110.044 Molecular mass
Mesh View
Computational mesh cells at
the solid/fluid interface.
Boundary Conditions
inhalation
Oxygen0.
0.01[l/s]
Gravity
velocity distribution
Inhalation velocity vector Exhalation velocity vector
Mass Fraction of Oxygen
Inhalation velocity vector Exhalation velocity vector
Mass Fraction of Oxygen 3D display
Graph of breathing gas components with diffuser
HEZI KONDERO
Numerical Solutions