Page 158 - TransAT_Tutorial_Manual

TransAT Tutorial Manual 4.3. Bubbles Merging

The mesh is now ready.

To save the settings,
• Click Files in the top left corner then select Save.

4.3.6 Input Tab
• Click the Input tab at the top of the TransATUI.

In this tab the simulation parameters are set up. It gives access to the different sub-tabs where
the parameters of the simulation are defined. For this tutorial, the parameters will be set such
that a two-phase flow can be simulated with the Level-Set interface-tracking method.

Physical Models

• Select the Physical models tab
• Define the equations to be solved and set the models to be used in the simulation as the
following
Pressure : ON
U Velocity : ON
V Velocity : ON
W Velocity : ON
Temperature : OFF
Concentration : OFF

• Activate Gravity and click to the right.

• Set the following parameters in the Gravity window them click to save the settings
x : 0.0 ,
y : −2.5
z : 0.0
ENABLE Hydrostatic

• In the Multiphase section activate Interface Tracking and set the model (drop-down list)
to Level-Set
• Click , set the value of Surface Tension as follows then click

Surface Tension : 0.002

The values for surface tension and gravity in this example were arbitrarily chosen for the sake
of computational time.

c
Ascomp AG Switzerland 148 Version 5.7