Expansion of an air bubble in water (2D)

Update: July 10, 2017
OpenFOAM 4.x

Case directory

$FOAM_TUTORIALS/multiphase/compressibleInterFoam/laminar/depthCharge2D

Summary

Model geometry Model geometry

We calculate the movement of a compressed bubble in water for 0.5 seconds. The bubble, which is initially compressed, begins to expand when the calculation starts. A no-slip condition is set for the region "walls" at the boundary of the analysis domain, and the calculation is performed as a two-dimensional problem with a single mesh in the Z direction.

The physical properties of the water and air phases are specified in the file "constant/thermophysicalProperties.*".

The meshes are as follows, and the number of mesh is 12800.

Mesh Meshes

The calculation result is as follows.

Volume ratio of water (alpha.water)
Volume ratio of water at initial time (alpha.water) Volume ratio of water at initial time (alpha.water)
Volume ratio of water at 0.1 sec (alpha.water) Volume ratio of water at 0.1 sec (alpha.water)
Volume ratio of water at 0.25 sec (alpha.water) Volume ratio of water at 0.25 sec (alpha.water)
Volume ratio of water at final time (alpha.water) Volume ratio of water at final time (alpha.water)

Commands

cp -r $FOAM_TUTORIALS/multiphase/compressibleInterFoam/laminar/depthCharge2D depthCharge2D
cd depthCharge2D

blockMesh
cp -r 0.orig 0
setFields
compressibleInterFoam

paraFoam

Calculation time

2 minutes 53.2 seconds *Single, Inter(R) Core(TM) i7-2600 CPU @ 3.40GHz 3.40GHz