CFD-based analysis of airflow organization in a plateau oxygen-enriched diffusion experiment cage
XU Yu
WANG Ning
TONG Shichao
ZHANG Chenxu
TANG Chi
ZHAI Mingming
Abstract：The application of diffuse oxygen enrichment in plateau environments is challenged by CO2 accumulation and uneven oxygen distribution within experimental chambers,compromising both experimental safety and data reliability.This study employed a Computational Fluid Dynamics(CFD)approach to simulate and analyze the airflow organization in a plateau diffuse oxygen enrichment experimental chamber.A physical model of the chamber was constructed,incorporating symmetrical ventilation inlets/outlets and parameters simulating rat respiration.The gas distribution characteristics under different operational conditions were investigated.Simulation results revealed that in the absence of ventilation,CO2 concentrated markedly within the rat's breathing zone.By optimizing the ventilation rate(43.2 m3/h)and air supply velocity(1.7 m/s),in coordination with a 30％oxygen supply,the oxygen concentration in the breathing zone was stabilized at 23.3％with a coefficient of variation of 4.2％,while CO2 levels were maintained under 1000 ppm.The oxygen enrichment efficiency reached 25.56％.This study confirms that optimizing airflow organization is crucial for achieving a safe and controllable oxygen-enriched microenvironment in plateau conditions,providing key parameters and a theoretical basis for the design of related artificial oxygen enrichment experimental equipment.
Keywords：Plateau diffuse oxygen enrichmentDiffuse oxygen enrichment experimental chamberAirflow organization characteristicsVentilation
Publication Date：2026-02-28
Online Publishing Date：2026-03-19(First online date of this platform, not the publication date of the document)
Pages：6( 1-6 )