On Time Smoothing. A Model for Momentum Transport
- 1 March 1958
- journal article
- research article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 28 (3) , 397-400
- https://doi.org/10.1063/1.1744144
Abstract
An investigation has been made of the time smoothing properties of the transport equations previously derived by the author [J. Chem. Phys. 26, 1421 (1957)]. A model is introduced, wherein momentum is transferred from one portion of a fluid medium to another via acoustical waves. This model is applied to the problem of viscous flow of a rare gas, and it is found that it is permissible and desirable to allow the time smoothing interval τ to become infinitely large. In practice this means that τ≫β—1, where β is a friction constant. The model incidentally yields a value for the viscosity coefficient in fair agreement with the Chapman‐Enskog hard sphere value.Keywords
This publication has 3 references indexed in Scilit:
- On the Regression of FluctuationsThe Journal of Chemical Physics, 1957
- The Statistical Mechanical Theory of Transport Processes. IV. The Equations of HydrodynamicsThe Journal of Chemical Physics, 1950
- Stochastic Problems in Physics and AstronomyReviews of Modern Physics, 1943