Groundbreaking Self-Breathing Ventilator Investigation

With the rise in global devastation created by the COVID-19 pandemic, the world needs a cheap, simple, and disposable ventilator containing no moving parts. We computationally explore the intricacies of the world's smallest ventilator, the \textbf{HOPE inVent}. When connected to a modest motive gas source, this 3-D printed device will self-pulse and ventilate an unconscious patient or support the breathing of a conscious patient. Pulsations occur because of the well-known Coanda effect coupled with acoustic interactions and turbulent instabilities at various scales. Its efficacy is demonstrated, and the influence of several important geometric parameters is revealed.