Abstract
The so-called generalized Kramers-Kirkwood expression for the average stress tensor of a system of interacting point particles, derived by Bird and Curtiss on using a phase-space-kinetic formalism has been reconsidered from different points of view. First a derivation based upon volume averaging is discussed, and after that a derivation based upon a virtual work principle. The latter approach offers the possibility of distinguishing reversible (including thermodynamic and Brownian) and dissipative forces and stresses by using a projection operator, associated with the constraints of the system.
Original language | English |
---|---|
Pages (from-to) | 328-335 |
Number of pages | 8 |
Journal | Rheologica acta |
Volume | 26 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1987 |
Keywords
- Interacting particles
- Constraint
- Virtual work principle
- Average stress tensor
- Volumeaveraging