โ Scribed by A. Guardone; L. Vigevano
No coin nor oath required. For personal study only.
An extension of the Roe linearization method to nonideal gases is described and applied to the particular case of the van der Waals gas. A supplementary relation connecting the thermodynamic variables is introduced to decouple the evaluation of the intermediate velocity and total specific enthalpy from the determination of the intermediate density, needed in the Jacobian matrix of the linearization due to the general thermodynamic character of the gas. The density value is obtained by solving the supplementary equation, which involves the Roe average of velocity and enthalpy, and that in the case of the polytropic van der Waals gas is a third-order algebraic equation. Numerical results are shown including classical and nonclassical behaviour in one-dimensional shock tube problems.
๐ SIMILAR VOLUMES
New combining rules are proposed for the well depth, E , and interaction distance, a, describing nonbonded interatomic forces for rare gas pair interactions. Concepts underlying current combining rules applied in simulations of macromolecular and polymer systems are shown to be incompatible with exp
Fluorescence exatntion specua of weaNy bound complexes between perylene (P) and rare-gas atoms (R) have been ob-served\_ Model ealculatlons of potentul surfers of vdW complexes conslslrng of perylene and rare-gas atoms show that geometrzcal re-orgnnisation IS Important and that thermal population of