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Opportunity at National Institute of Standards and Technology (NIST)

Thermodynamic Properties of Fluids—Experimental

Location

Material Measurement Laboratory, Applied Chemicals and Materials Division

RO# Location
50.64.72.B1693 Boulder, CO

Please note: This Agency only participates in the February and August reviews.

Advisers

Name E-mail Phone
McLinden, Mark O markm@boulder.nist.gov 303.497.3580

Description

We develop and utilize state-of-the-art experimental and computational techniques to acquire, evaluate, and correlate thermodynamic data of standard reference quality with a particular emphasis on mixtures.

A wide variety of experimental apparatus are available, including an isochoric pressure-volume-temperature (pVT) apparatus for measurements from 14 K-400 K at pressures to 35 MPa and two dual-sinker densimeters of standard reference quality for pVT measurements from 90 K-520 K, with pressures to 40 MPa. Sound-speed and heat-capacity data are also extremely important in developing accurate equations of state. Apparatus are available to measure these properties from cryogenic temperatures to 500 K including a twin cell calorimeter for constant-volume heat capacities and a spherical resonator for sound speeds. Apparatus being developed include a high-temperature pVT apparatus capable of measurements up to 1000 K, a wide-ranging calorimeter covering 5 K-400 K, and an effusion apparatus for mPa-level vapor pressures over temperatures of 100 K-400 K.

Closely integrated experimental, theoretical, and computational programs for understanding and characterizing technically important fluids and fluid mixtures are ongoing. Major emphasis has been on the properties of hydrocarbon gases and their mixtures, CO2-rich mixtures, refrigerant mixtures, aqueous systems, and ionic liquids.

 

Keywords:
Calorimetry; Computational fluid dynamics; Fluid properties; Thermodynamics; Thermophysics;

Eligibility

Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral applicants
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