Once the geometry of the control domain is defined, we have to proceed with setting the boundary conditions of the problem (access the conditions menu as shown in example 1). The conditions to be applied in this example are:
a) Velocity field [line]
b) Pressure field [line]
The Velocity
Field condition is used to fix the velocity in a surface to the velocity
field given in the Data > Initial Data >RANSOL menu (fields Initial_Velocity_X, Initial_Velocity_Y and Initial_
Velocity_Z). Those fields
can define a space-
It is also possible to fix the Velocity (during the run) to the initial value of the function given in the above mentioned entries. In order to do this, the corresponding Fix_Initial flag has to be marked.
This condition is now going to be assigned to the inflow and lateral lines of the channel. In our case, all the velocity components have to be fixed (i.e. mark Fix_Field_X and Fix_Field_Y) for the inflow lines and only the vertical component (i.e. mark Fix_Field_Y) for the lateral lines (see Figure 84). Then, the corresponding components will be fixed to its initial value.
Figure 84 Velocity Field Line conditions |
As
mentioned in example
Figure 85 Overview of the applied conditions |
|