Numerical simulation of transient inviscid gas flows in a shock tube

1985 ◽  
Author(s):  
J. YANG ◽  
C. LOMBARD ◽  
N. NAGARAJ ◽  
D. BERSHADER
Keyword(s):  
Numerical Simulation ◽  
Shock Tube ◽  
Gas Flows ◽  
Inviscid 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.

The numerical simulation of shock bifurcation near the end wall of a shock tube

1995 ◽  
Vol 7 (10) ◽  
pp. 2475-2488 ◽  
Author(s):  
Y. S. Weber ◽  
E. S. Oran ◽  
J. P. Boris ◽  
J. D. Anderson
Keyword(s):  
Numerical Simulation ◽  
Shock Tube ◽  
End Wall

Numerical simulation of Sharma's shock-tube experiment

1993 ◽  
Author(s):  
STEPHANE MOREAU ◽  
PIERRE-YVES BOURQUIN ◽  
DEAN CHAPMAN ◽  
ROBERT MACCORMACK
Keyword(s):  
Numerical Simulation ◽  
Shock Tube ◽  
Shock Tube Experiment

Shock tube experiments and numerical simulation of the single-mode, three-dimensional Richtmyer–Meshkov instability

2009 ◽  
Vol 21 (11) ◽  
pp. 114104 ◽  
Author(s):  
C. C. Long ◽  
V. V. Krivets ◽  
J. A. Greenough ◽  
J. W. Jacobs
Keyword(s):  
Numerical Simulation ◽  
Shock Tube ◽  
Three Dimensional ◽  
Single Mode

Numerical simulation of gas flows around aircraft with allowance for the flow/exhaust jet interaction

2015 ◽  
Vol 55 (4) ◽  
pp. 677-689
Author(s):  
D. A. Zabarko ◽  
V. I. Zubov ◽  
V. P. Kotenev ◽  
V. M. Krivtsov ◽  
Yu. A. Polezhaev
Keyword(s):  
Numerical Simulation ◽  
Gas Flows ◽  
Jet Interaction ◽  
Exhaust Jet
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