Coherence and flow-maximization of a one-way valve

TL;DR

This paper models gas flow through a one-way valve, proposing a design modification to eliminate chattering and analyzing flow maximization via control parameters through analytical and numerical methods.

Contribution

It introduces a modified valve design that prevents chattering using a coupling Riemann solver with stability properties and analyzes flow maximization strategies.

Findings

Modified valve design reduces chattering.

Flow maximization depends on control parameters.

Numerical simulations confirm theoretical results.

Abstract

We consider a mathematical model for the gas flow through a one-way valve and focus on two issues. First, we propose a way to eliminate the chattering (the fast switch on and off of the valve) by slightly modifying the design of the valve. This mathematically amounts to the construction of a coupling Riemann solver with a suitable stability property, namely, coherence. We provide a numerical comparison of the behavior of the two valves. Second, we analyze, both analytically and numerically, for several significative situations, the maximization of the flow through the modified valve according to a control parameter of the valve and time.