NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Current status of transport properties of hydrogen
Published
Author(s)
Jacob W. Leachman, Bryce Jacobson, Steven Penoncello, Marcia L. Huber
Abstract
This paper contains an analysis of transport properties of hydrogen, particularly thermal conductivity and viscosity, which are needed for many applications in system analysis and design. It includes a review of the current standard transport property models for normal hydrogen and parahydrogen, which are based on measurement and correlation work done before the mid 1980s, and presents comparisons of properties calculated using those models to available experimental data. Data measured and published after the completion of the current transport property standards for both normal hydrogen and parahydrogen are included in the comparisons. Recommendations for new experimental measurements needed and for new transport property formulations for normal hydrogen and parahydrogen are included.
hydrogen, model, normal hydrogen, parahydrogen, transport properties
Citation
Leachman, J.
, Jacobson, B.
, Penoncello, S.
and Huber, M.
(2007),
Current status of transport properties of hydrogen, International Journal of Thermophysics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=50380
(Accessed October 16, 2025)