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Search Publications by: Allan H. Harvey (Fed)

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Displaying 26 - 50 of 134

Anomaly in the Virial Expansion of IAPWS-95 at Low Temperatures

November 6, 2019
Author(s)
Allan H. Harvey
In the standard reference equation of state for the thermodynamic properties of water, known as IAPWS-95, the fourth virial coefficient D(T) becomes abnormally large in magnitude at temperatures below approximately 300 K. At conditions where a virial

Molecular Calculation of the Critical Parameters of Classical Helium

July 2, 2019
Author(s)
Richard A. Messerly, Navneeth Gokul, Andrew J. Schultz, David A. Kofke, Allan H. Harvey
We compute the vapor-liquid critical coordinates of a model of helium in which nuclear quantum effects are absent. We employ highly accurate ab initio pair and three-body potentials and calculate the critical parameters rigorously in two ways. First, we

Editorial: (Slight) Expansion in Scope for JPCRD

February 8, 2019
Author(s)
Allan H. Harvey, Donald R. Burgess Jr.
Editorial describing expansion of journal Scope for JPCRD to accept some original experimental and theoretical work if it provides "reference data" that can be used, for example, as a reference for calibrations.

Properties of Ice and Supercooled Water

January 1, 2019
Author(s)
Allan H. Harvey
This is an update to an existing table in the CRC Handbook of Chemistry and Physics, updating to the latest IAPWS recommendation for thermodynamic properties of supercooled water.

Properties of Saturated Liquid D2O

January 1, 2019
Author(s)
Allan H. Harvey
Update of existing table in CRC Handbook, reflecting new IAPWS equation of state for heavy water.

A Reference Equation of State for Heavy Water

December 3, 2018
Author(s)
Stefan Herrig, Monika Thol, Allan H. Harvey, Eric Lemmon
An empirical fundamental equation of state is presented for heavy water (deuterium oxide, D2O). The equation is explicit in the reduced Helmholtz energy and allows the calculation of all thermodynamic properties over the whole fluid surface. It is valid

Candidates to Replace R-12 as a Radiating Gas in Cherenkov Detectors

April 14, 2018
Author(s)
Allan H. Harvey, Yauheni Paulechka, Patrick F. Egan
Dichlorodifluoromethane (R-12) has been used as a radiating gas in pressure threshold Cherenkov detectors for high-energy particle physics. However, that ozone-depleting compound is becoming unavailable due to the Montreal Protocol. To find a replacement

On the Melting Curve of Sulfur Hexafluoride

November 9, 2017
Author(s)
Allan H. Harvey
A previous correlation for the melting curve of sulfur hexafluoride (SF6) is inconsistent with the thermodynamic slope at the triple point derived from the Clapeyron equation. It is shown that this is probably due to the previous authors combining an

Simulation-aided Correlations for the Dielectric Constant of H2S, SO2, and SF6

August 16, 2017
Author(s)
Allan H. Harvey, Raymond D. Mountain
A new method is developed for correlating the static dielectric constant of polar fluids over wide ranges of conditions where few experimental data exist. Molecular dynamics simulations are used to establish the temperature and density dependence of the

All-Dimensional H2-CO Potential: Validation with Fully Quantum Second Virial Coefficients

February 3, 2017
Author(s)
Giovanni Garberoglio, Piotr Jankowski, Krzysztof Szalewicz, Allan H. Harvey
We use a new high-accuracy all-dimensional potential to compute the cross second virial coefficient B12(T) between molecular hydrogen and carbon monoxide. The path-integral method is used to fully account for quantum effects. Values are calculated from 10

Thermophysical Properties of Carbon Dioxide and CO2-Rich Mixtures

May 9, 2016
Author(s)
Allan H. Harvey, Ian H. Bell, Marcia L. Huber, Arno R. Laesecke, Eric W. Lemmon, Christopher W. Meyer, Chris D. Muzny, Richard A. Perkins
This report summarizes the results of work performed under DOE/NETL Interagency Agreement DE- FE0003931, which began in October 2011 and ended (after a 6-month no-cost extension) March 31, 2015. The key objectives for this work were to: (1) Measure the dew

Metrological challenges for measurements of key climatological observables, Part 4: Atmospheric relative humidity

December 15, 2015
Author(s)
Allan H. Harvey, J W. Lovell-Smith, Rainer Feistel, Olaf Hellmuth, Stephanie A. Bell, M Heinonen, J R. Cooper
Water in its three ambient phases plays the central thermodynamic role in the terrestrial climate system. Clouds control Earth’s radiation balance, atmospheric water vapour is the strongest “greenhouse” gas, and non-equilibrium relative humidity at the air

Metrological challenges for measurements of key climatological observables: Oceanic salinity and pH, and atmospheric humidity. Part 1: overview

December 15, 2015
Author(s)
Rainer Feistel, Robert Wielgosz, Stephanie A. Bell, M F. Camoes, J R. Cooper, P Dexter, A G. Dickson, P Fisicaro, Allan H. Harvey, M Heinonen, Olaf Hellmuth, H J. Kretzschmar, J W. Lovell-Smith, Trevor J. McDougall, R Pawlowicz, S Seitz, Petra Spitzer, D Stoica, H Wolf, P Ridout
Water in its three ambient phases plays the dominant thermodynamic role for the functioning principles of the terrestrial climate system. Together with clouds, water vapour in the atmosphere is the strongest greenhouse gas (followed by clouds and carbon