Abstract The accurate calculations of adsorption equilibrium for multicomponent gas systems are of great importance in many applications. In this paper, five two-dimensional equations of state 2D-EOS, i.e. Van der Waals, Eyring, Zhou-Ghasem-Robinson, Soave-Redlich-Kwong and Peng-Robinson, were examined to find out their abilities to predict adsorption equilibrium for pure and multi-component ga...

Analytical representations are derived for two equations of state (EOSs) of neutron-star matter: FPS and SLy. Each of these EOSs is unified, that is, it describes the crust and the core of a neutron star using the same physical model. Two versions of the EOS parametrization are considered. In the first one, pressure and mass density are given as functions of the baryon density. In the second ve...

The Noh verification test problem is extended beyond the commonly studied ideal gamma-law gas to more realistic equations of state (EOSs): including the stiff gas, the NobleAbel gas, and the Carnahan-Starling EOS for hard-sphere fluids. Self-similarity methods are used to solve the Euler compressible flow equations, which in combination with the Rankine-Hugoniot jump conditions, provide a tract...

We study the radial oscillations of non-rotating strange stars and their characteristic echo frequencies for three Equations state (EoSs), viz., MIT Bag model EoS, linear EoS polytropic EoS. The these compact are computed EoSs. 22 lowest each EoSs have been computed. First, we integrated Tolman-Oppenheimer-Volkoff (TOV) equations numerically to calculate pressure perturbations stars. Next, mass...

Latest general relativistic simulations for the merger of binary neutron stars with realistic equations of states (EOSs) show that a hypermassive neutron star of an ellipsoidal figure is formed after the merger if the total mass is smaller than a threshold value which depends on the EOSs. The effective amplitude of quasiperiodic gravitational waves from such hypermassive neutron stars is approx...

The merger of binary neutron stars is likely to lead to differentially rotating remnants. In this paper, we survey several cold nuclear equations of state (EOSs) and numerically construct models of differentially rotating neutron stars in general relativity. For each EOS we tabulate maximum allowed masses as a function of the degree of differential rotation. We also determine effective polytrop...

Two new nuclear equations of state (EOSs) are proposed and are applied to neutron star (NS). They predict the incompressibilitiesK0 = 179MeV and 230MeV, respectively. The density dependencies of nuclear symmetry energies are consistent with the recent analyses of heavy-ion reactions. We can reproduce the recently observed super-massive NS of MG > 2:5M , the mass-radius relation of EXO 0748-676 ...