Flow metrology & rheology

News and Updates

Neutrons by the Numbers

May 21, 2018

After years of research, scientists at the National Institute of Standards and Technology (NIST) have developed and...

Making Smokestack Emissions Tests Better, Faster, Cheaper

February 27, 2018

Smokestacks at coal-fired power plants have sensors that continuously monitor their emissions by measuring the flow of...

A Stopwatch for Nanofluids: NIST Files Provisional Patent for Measuring Nanoliter Flow Rates

January 17, 2018

The National Institute of Standards and Technology (NIST) has filed a provisional patent application for a microflow...

In Natural Gas Pipelines, NIST Goes with the Flow

April 19, 2013

On an ordinary day, the United States consumes about 70 billion cubic feet of natural gas – enough to fill a space a...

Publications

Progress Towards Accurate Monitoring of Flue Gas Emissions

May 17, 2018

Author(s):

Aaron N. Johnson, Iosif I. Shinder, Michael R. Moldover, Joey T. Boyd, Bernard J. Filla

The amounts of CO2 and other pollutants emitted by a coal-fired power plant are measured using a continuous emissions monitoring system (CEMS) permanently...

Characterization of Five-Hole Probes used for Flow Measurement in Stack Emission Testing

May 17, 2018

Author(s):

Iosif I. Shinder, Aaron N. Johnson, Michael R. Moldover, Bernard J. Filla, Vladimir Khromchenko

We report progress towards the goal of reducing the errors in industrial smokestack flow measurements to 1 % by replacing S-probes with calibrated 3-D probes (...

Characterizing Gas-Collection Volumes with Acoustic and Microwave Resonances

March 28, 2018

Author(s):

Jodie G. Pope, Keith A. Gillis, Michael R. Moldover, J B. Mehl

We characterized a 1.8 m3, nearly-spherical, steel shell at pressures up to 7 MPa for use as a gas flow standard. For pressure, volume, temperature, and time...

Errors in Rate of Rise Gas Flow Measurements from Flow Work

March 21, 2018

Author(s):

John D. Wright, Aaron N. Johnson, Gina M. Kline, Michael R. Moldover

The rate of rise (RoR) method measures the time rate of change of the mass of gas in a collection volume as it is filled via a flow meter under test. The mass...

Projects & Programs

COMPLETED: Polymer Formulations

Our goal is to develop combinatorial and high-throughput measurement approaches for rapid characterization of the structure and phase behavior of...

The NIST Chemistry Webbook

The NIST Chemistry WebBook is a site on the Internet ( http://webbook.nist.gov/ ) that provides convenient access to a variety of physical and chemical...

Modeling Dispersion Rheology for Non-Spherical Particles

The flow of polymer composites via injection molding, spraying or spreading on surfaces is crucial to polymer composite manufacturing. For single-phase liquids...

Atomic Standard for Pressure

NIST scientists are developing a highly accurate primary standard for pressure in the range 2 MPa to 7 MPa based on fundamental physical properties of helium...

Flow metrology & rheology

News and Updates

Neutrons by the Numbers

Making Smokestack Emissions Tests Better, Faster, Cheaper

A Stopwatch for Nanofluids: NIST Files Provisional Patent for Measuring Nanoliter Flow Rates

In Natural Gas Pipelines, NIST Goes with the Flow

Publications

Progress Towards Accurate Monitoring of Flue Gas Emissions

Characterization of Five-Hole Probes used for Flow Measurement in Stack Emission Testing

Characterizing Gas-Collection Volumes with Acoustic and Microwave Resonances

Errors in Rate of Rise Gas Flow Measurements from Flow Work

Projects & Programs

COMPLETED: Polymer Formulations

The NIST Chemistry Webbook

Modeling Dispersion Rheology for Non-Spherical Particles

Atomic Standard for Pressure

Tools & Instruments

Gravimetric Standard for Liquid Micro-Flow

Liquid Flow Standards

Liquid Density

Wind Tunnel