What is it about?
In this study, the effect of rotation and vibration on the structure of shock waves in moderately dense diatomic and polyatomic non-polar gases using the one-temperature Navier–Stokes–Fourier approach has been investigated using nitrogen, oxygen, and carbon dioxide as reference gases. The inclusion of denseness, rotational, and vibrational modes of molecular motion was found to have a significant effect on the density and temperature profiles, the inverse shock thickness, the bulk to shear viscosity ratio, and the molar specific heat at constant pressure.
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Why is it important?
The investigation has been carried out assuming nitrogen, oxygen, and carbon dioxide as dense gases having both rotational and vibrational modes of molecular motions. These effects on the inverse shock thickness and other flow profiles have been observed to be significant. This may help develop further models and an ad-hoc model for engineering simulations.
Perspectives
I hope this article may enlighten the way toward a deep study of the gases nitrogen, oxygen, and carbon dioxide, the most significant gases constituting the Earth's atmosphere.
Miss Divya Khapra
University of Delhi
Read the Original
This page is a summary of: Shock-wave structure in non-polar diatomic and polyatomic dense gases under rotation and vibration, Physics of Fluids, June 2022, American Institute of Physics,
DOI: 10.1063/5.0097397.
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