We present new computations of the equilibrium and non-equilibrium cooling efficiencies and ionization states for low-density radiatively cooling gas containing cosmic abundances of the elements H, He, C, N, O, Ne, Mg, Si, S, and Fe. We present results for gas temperatures between 10 and 10 K, assuming dust-free and optically thin conditions, and no external radiation. For non-equilibrium cooli...

A diffuse-interface method is proposed for the simulation of interfaces between compressible fluids with general equations of state, including tabulated laws. The interface is allowed to diffuse on a small number of computational cells and a mixture model is given for this transition region. We write conservation equations for the mass of each fluid and for the total momentum and energy of the ...

A local constitutive model for anisotropic granular materials is introduced and applied to isobaric (homogeneous) axial-symmetric deformation. The simplified model (in the coordinate system of the bi-axial box) involves only scalar values for hydrostatic and shear stresses, for the volumetric and shear strains as well as for the new ingredient, the anisotropy modulus. The non-linear constitutiv...

An irreversible cycle model of a Braysson heat engine operating between two heat reservoirs is used to investigate the performance of the cycle affected by the finite-rate heat transfer between the working fluid and the heat reservoirs, heat leak loss between the heat reservoirs and irreversibility inside the cycle. The specific power output is maximized with respect to the cycle temperatures a...

In the work attenuation regularities of acoustic signals, which propagate in closed chambers, are analysed. Due to this that in a closed chamber gases state parameters are interdependent, so change of one of the parameters results in corresponding changes of others. Usually the closed chambers are of constant volume or constant pressure, therefore influence of temperature variations on air para...

We continue in this paper to illustrate the implications of dual model liquids (DML) by deriving expression for isochoric specific heat as a function collective degree freedom available at given temperature and analyzing its dependence on temperature. Two main tasks have been accomplished. First, we show that obtained DML is line with experimental results. Second, has compared analogous one ano...