Numerical simulation of dense gas flows on unstructured grids with an implicit high resolution upwind Euler solver

2004 ◽  
Vol 46 (7) ◽  
pp. 735-765 ◽  
Author(s):  
P. Colonna ◽  
S. Rebay
Keyword(s):  
Numerical Simulation ◽  
High Resolution ◽  
Unstructured Grids ◽  
Gas Flows ◽  
Dense Gas ◽  
Euler Solver

Efficient Numerical Simulation of Dense Gas Flows Past Airfoils and Wings

2009 ◽  
pp. 295-300
Author(s):  
Pietro Marco Congedo ◽  
Paola Cinnella ◽  
Christophe Corre
Keyword(s):  
Numerical Simulation ◽  
Gas Flows ◽  
Dense Gas

Nonclassical dense gas flows for simple geometries

AIAA Journal ◽  
1998 ◽  
Vol 36 ◽  
pp. 1842-1847 ◽  
Author(s):  
Brady P. Brown ◽  
Brian M. Argrow
Keyword(s):  
Gas Flows ◽  
Dense Gas

Non-stationary process characteristics of the gas outflow into a liquid

2019 ◽  
Vol 14 (2) ◽  
pp. 82-88
Author(s):  
M.V. Alekseev ◽  
I.S. Vozhakov ◽  
S.I. Lezhnin
Keyword(s):  
Numerical Simulation ◽  
Liquid Column ◽  
Gas Content ◽  
Liquid Lead ◽  
Gas Flows ◽  
Asymptotic Model ◽  
Process Characteristics ◽  
Significant Difference ◽  
Order Of Magnitude ◽  
Volume Method

A numerical simulation of the process of the outflow of gas under pressure into a closed container partially filled with liquid was carried out. For comparative theoretical analysis, an asymptotic model was used with assumptions about the adiabaticity of the gas outflow process and the ideality of the liquid during the oscillatory one-dimensional motion of the liquid column. In this case, the motion of the liquid column and the evolution of pressure in the gas are determined by the equation of dynamics and the balance of enthalpy. Numerical simulation was performed in the OpenFOAM package using the fluid volume method (VOF method) and the standard k-e turbulence model. The evolution of the fields of volumetric gas content, velocity, and pressure during the flow of gas from the high-pressure chamber into a closed channel filled with liquid in the presence of a ”gas blanket“ at the upper end of the channel is obtained. It was shown that the dynamics of pulsations in the gas cavity that occurs when the gas flows into the closed region substantially depends on the physical properties of the liquid in the volume, especially the density. Numerical modeling showed that the injection of gas into water occurs in the form of a jet outflow of gas, and for the outflow into liquid lead, a gas slug is formed at the bottom of the channel. Satisfactory agreement was obtained between the numerical calculation and the calculation according to the asymptotic model for pressure pulsations in a gas projectile in liquid lead. For water, the results of calculations using the asymptotic model give a significant difference from the results of numerical calculations. In all cases, the velocity of the medium obtained by numerical simulation and when using the asymptotic model differ by an order of magnitude or more.

Numerical Solver for Dense Gas Flows

AIAA Journal ◽  
2005 ◽  
Vol 43 (11) ◽  
pp. 2458-2461 ◽  
Author(s):  
Paola Cinnella ◽  
Pietro M. Congedo
Keyword(s):  
Gas Flows ◽  
Dense Gas ◽  
Numerical Solver
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