Comparison of viscosities from the Chapman-Enskog and relaxation time methods

• Authors: Anton Wiranata , Madappa Prakash , Purnendu Chakraborty
• Languages of publication: EN

Abstracts

EN

A quantitative comparison between the results of shear viscosities from the Chapman-Enskog and relaxation time methods is performed for selected test cases with specified elastic differential cross sections: (i) the non-relativistic, relativistic and ultra-relativistic hard sphere gas with angle and energy independent differntial cross section, (ii) the Maxwell gas, (iii) chiral pions and (iv) massive pions. Our quantitative results reveal that the extent of agreement (or disagreement) depends very sensitively on the energy dependence of the differential cross sections employed.

Keywords

EN

shear viscosity; Chapman-Enskog approximation; relaxation time approximation

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2012
• Volume: 10
• Issue: 6
• Pages: 1349-1351

Dates

published

1 - 12 - 2012

online

4 - 12 - 2012

Contributors

author

Anton Wiranata

author

Madappa Prakash

• Department of Physics & Astronomy, Ohio University, Athens, OH, 45701, USA

author

Purnendu Chakraborty

• Physical Research Laboratory, Ahmedabad, India

References

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Identifiers

DOI

10.2478/s11534-012-0082-3