Computational Modeling of a Low‐Cost Fluidic Oscillator for Use in an Educational Respiratory Simulator

Advanced NanoBiomed Research

Samuel Dutra Gollob¹  Tom Dillon¹  Ellen Tunney Roche¹  Caglar Ozturk²  Keegan Mendez²  Luca Rosalia²  Katharina Kempf² 

[1] Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge MA 02139 USA;Institute for Medical Engineering and Science Massachusetts Institute of Technology Cambridge MA 02139 USA;

关键词: computational fluid dynamics;    education;    fluidic oscillators;    mechanical ventilation;    respiratory;   

DOI  :  10.1002/anbr.202000112

来源: DOAJ

【 摘 要 】

Herein, the computational modeling of a fluidic oscillator for use in an educational respiratory simulator apparatus is presented. The design provides realistic visualization and tuning of respiratory biomechanics using a part that is (i) inexpensive, (ii) easily manufactured without the need for specialized equipment, (iii) simple to assemble and maintain, (iv) does not require any electronics, and (v) has no moving components that could be prone to failure. A computational fluid dynamics (CFD) model is used to assess flow characteristics of the system, and a prototype is developed and tested with a commercial benchtop respiratory simulator. The simulations show clinically relevant periodic oscillation with outlet pressures in the range of 8–20 cmH2O and end‐user‐tunable frequencies in the range of 3–6 s (respiratory rate [RR] of 10–20 breaths per minute). The fluidic oscillator presented here functions at physiologically relevant pressures and frequencies, demonstrating potential as a low cost, hands‐on, and pedagogical tool. The model will serve as a realistic model for educating Science, Technology, Engineering, and Mathematics (STEM) students on the relationship between flow, pressure, compliance, and volume in respiratory biomechanics while simultaneously exposing them to basic manufacturing techniques.

【 授权许可】

Unknown