scholarly journals Experimental and Theoretical Study of Dielectric Permeability of Nonpolar Gases

2017 ◽  
pp. 1-10
Keyword(s):  
Equation Of State ◽  
Good Accuracy ◽  
Theoretical Study ◽  
Van Der Waals ◽  
Dielectric Permeability ◽  
Small Temperature

In the present paper we consider application of equation of state for model gases to the description of experimental dependencies of dielectric permeability on pressure and temperature for nonpolar gases. The case of argon is regarded as an example. It is demonstrated that the generalized Van-der-Waals-Berthelot equation describes the dependence of dielectric permeability on pressure and temperature with good accuracy. It is shown that the measurement of dielectric permeability using the isotherms with small temperature increments provides a means to obtain the exact tabulated equation of state. This result can be used in other areas of investigation.

scholarly journals Experimental and Theoretical Study of Dielectric Permeability of Nonpolar Gases

2017 ◽  
pp. 1-10
Keyword(s):  
Equation Of State ◽  
Good Accuracy ◽  
Theoretical Study ◽  
Van Der Waals ◽  
Dielectric Permeability ◽  
Small Temperature

In the present paper we consider application of equation of state for model gases to the description of experimental dependencies of dielectric permeability on pressure and temperature for nonpolar gases. The case of argon is regarded as an example. It is demonstrated that the generalized Van-der-Waals-Berthelot equation describes the dependence of dielectric permeability on pressure and temperature with good accuracy. It is shown that the measurement of dielectric permeability using the isotherms with small temperature increments provides a means to obtain the exact tabulated equation of state. This result can be used in other areas of investigation.

scholarly journals Limiting temperature of pion gas with the van der Waals equation of state

2016 ◽  
Vol 43 (9) ◽  
pp. 095105 ◽  
Author(s):  
R V Poberezhnyuk ◽  
V Vovchenko ◽  
D V Anchishkin ◽  
M I Gorenstein
Keyword(s):  
Equation Of State ◽  
Van Der Waals ◽  
Van Der Waals Equation

Experimental and theoretical study of the equation of state of trifluoromethane in the near-critical region

1991 ◽  
Vol 95 (8) ◽  
pp. 3351-3357 ◽  
Author(s):  
Arturo G. Aizpiri ◽  
Antonio Rey ◽  
Jorge Davila ◽  
Ramon G. Rubio ◽  
John A. Zollweg ◽  
...  
Keyword(s):  
Equation Of State ◽  
Critical Region ◽  
Theoretical Study

scholarly journals Nonlinear Processes in Safety Systems for Substances with Parameters Close to a Critical State

2021 ◽  
Vol 17 (1) ◽  
pp. 119-138
Author(s):  
M. R. Koroleva ◽  
◽  
O. V. Mishchenkova ◽  
V. A. Tenenev ◽  
T. Raeder ◽  
...  
Keyword(s):  
Equation Of State ◽  
Critical State ◽  
Stokes Equations ◽  
Safety Valve ◽  
Van Der Waals ◽  
Local Approximation ◽  
Critical Conditions ◽  
Nonlinear Processes ◽  
Real Gas ◽  
Van Der Waals Equation

The paper presents a modification of the digital method by S. K. Godunov for calculating real gas flows under conditions close to a critical state. The method is generalized to the case of the Van der Waals equation of state using the local approximation algorithm. Test calculations of flows in a shock tube have shown the validity of this approach for the mathematical description of gas-dynamic processes in real gases with shock waves and contact discontinuity both in areas with classical and nonclassical behavior patterns. The modified digital scheme by Godunov with local approximation of the Van der Waals equation by a two-term equation of state was used for simulating a spatial flow of real gas based on Navier – Stokes equations in the area of a complex shape, which is characteristic of the internal space of a safety valve. We have demonstrated that, under near-critical conditions, areas of nonclassical gas behavior may appear, which affects the nature of flows. We have studied nonlinear processes in a safety valve arising from the movement of the shut-off element, which are also determined by the device design features and the gas flow conditions.

scholarly journals Hadron resonance gas with van der Waals interactions

2020 ◽  
Vol 29 (05) ◽  
pp. 2040002 ◽  
Author(s):  
Volodymyr Vovchenko
Keyword(s):  
Equation Of State ◽  
Van Der Waals ◽  
Heavy Ion ◽  
Van Der Waals Interactions ◽  
Excluded Volume ◽  
Heavy Ion Collision ◽  
Lattice Quantum Chromodynamics ◽  
Qcd Critical Point ◽  
Lattice Quantum ◽  
Ion Collision

An overview of a hadron resonance gas (HRG) model that includes van der Waals (vdW) interactions between hadrons is presented. Applications of the excluded volume HRG model to heavy-ion collision data and lattice quantum chromodynamics (QCD) equation of state are discussed. A recently developed quantum vdW HRG model is covered as well. Applications of this model in the context of the QCD critical point are elaborated.

scholarly journals A theoretical study of He2ICl van der Waals cluster

2006 ◽  
Vol 125 (1) ◽  
pp. 014313 ◽  
Author(s):  
Álvaro Valdés ◽  
Rita Prosmiti ◽  
Pablo Villarreal ◽  
Gerardo Delgado-Barrio
Keyword(s):  
Theoretical Study ◽  
Van Der Waals ◽  
Van Der Waals Cluster
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