Rotational relaxation of molecular hydrogen at moderate temperatures

Journal Article · Sat Jan 01 04:00:00 EST 1994 · Journal of Thermophysics and Heat Transfer

DOI:https://doi.org/10.2514/3.498· OSTI ID:45859

Sharma, S P

Using a coupled rotation-vibration-dissociation model the rotational relaxation times for molecular hydrogen as a function of final temperature (500-5000 K), in a hypothetical scenario of sudden compression, are computed. The theoretical model is based on a master equation solver. The bound-bound and bound-free transition rates have been computed using a quasiclassical trajectory method. A review of the available experimental data on the rotational relaxation of hydrogen is presented, with a critical overview of the method of measurements and data reduction, including the sources of errors. These experimental data are then compared with the computed results. 9 refs.

• Research Organization: National Aeronautics and Space Administration, Moffett Field, CA (United States). Ames Research Center
• OSTI ID: 45859
• Journal Information: Journal of Thermophysics and Heat Transfer, Journal Name: Journal of Thermophysics and Heat Transfer Journal Issue: 1 Vol. 8; ISSN 0887-8722; ISSN JTHTEO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COMPUTERIZED SIMULATION
HYDROGEN
LATTICE VIBRATIONS
MATHEMATICAL MODELS
TEMPERATURE DEPENDENCE