Mechanical Engineering ETDs

Publication Date

Summer 7-15-2022


In this thesis, I document the design, testing and performance of a novel Expanded-Range Venturi Flow Meter (ERVFM) concept. The ERVFM combines two, parallel-configured Venturi Flow Meters (VFM) with a Solid-State Selector Valve (SSSV). The goal was to create a reliable, high-turndown ratio flow meter which directs the fluid to either Venturi tube using the inherent pressure drop of the SSSV, and without moving parts. I constructed a pumped-fluid loop test-setup and quantified the ERVFM’s performance through pressure loss and mass flow rate measurements. In addition, I used python to develop models to assist in prototype design and data-processing. My results indicate that the SSSV does exhibit a switching phenomenon and further work is needed to make its performance more robust and definitively determine whether the system's turndown ratio improves upon existing Venturi-based meters.


3D Printing, Valve, Reliability, Venturi Flow Meter

Degree Name

Mechanical Engineering

Level of Degree


Department Name

Mechanical Engineering

First Committee Member (Chair)

Dr. Daniel Banuti

Second Committee Member

Dr. Peter Vorobieff

Third Committee Member

Dr. Patrick Wayne


Jon Allison, Air Force Research Labs, KAFB

Document Type