TITLE : LIQUID COLUMN SUBJECT TO A SHOCK WAVE

BY : CHAM development team

FOR : Demonstration Case

DATE : 1999

PHOENICS Version : 3.2

DETAILS :

• Two-Dimensional transient flow
• Cartesian axi-symmetric computational grid

NOTES :

• High-pressure air is separated from low-pressure air by a diaphragm at the top-section of a tube with closed ends.
• The diaphragm suddenly breaks.
• The subsequent distributions of velocity and pressure are predicted.
• Simulation describes the resulting free-surface displacement of initially rectangular liquid column located at the tube bottom.
• The analysis is two-dimensional, and the process is supposed to be isentropic, ie without either friction or heat transfer.
• The free-surface is modelled using the Extended Scalar Equation Method.

The animated picture shows the propagation of shock wave, by velocity vectors, and evolution of the free-surface contour indicated by yellow curve at successive times.

Start animation