Blowing air into water column

Update: July 10, 2017
OpenFOAM 4.x

Case directory

$FOAM_TUTORIALS/multiphase/reactingMultiphaseEulerFoam/laminar/bubbleColumn

Summary

Model geometry Model geometry

We calculate the mixing of air into the water column for 100 seconds. Air flows in from the region "inlet" at the bottom of the column at (0, 0.1, 0) m/s and out from the region "outlet". We assume that the ratio of water to air is 1:1 in the region "inlet", and the calculation is performed as a two-dimensional problem with one mesh in the Z-direction.

The properties and interactions of the water and air are defined in the files "constant/thermophysicalProperties.water", "constant/thermophysicalProperties.air", and "constant/phaseProperties".

The meshes are as follows, and the number of mesh is 1875.

Mesh Meshes

The calculation result is as follows.

Volume ratio of water (alpha.water)
Volume ratio of water at final time (alpha.water) Volume ratio of water at final time (alpha.water)
Flow velocity of water at final time (U.water) Flow velocity of water at final time (U.water)

Commands

cp -r $FOAM_TUTORIALS/multiphase/reactingMultiphaseEulerFoam/laminar/bubbleColumn bubbleColumn
cd bubbleColumn

blockMesh

setFields
reactingMultiphaseEulerFoam

paraFoam

Calculation time

17 minutes 31.78 seconds *Single, Inter(R) Core(TM) i7-2600 CPU @ 3.40GHz 3.40GHz