Boundary conditions

Once we have defined the geometry of the control volume, it is necessary to set the boundary conditions of the problem. This process is carried out through the HEATRANS conditions window.

a) Fix Temperature [line]

The Fix Temperature [line] condition is used to fix the temperature on a line. In this example this condition will be assigned to the right line of the geometry with the value 100o and to the left line with the value 0o (see Figure 126).

 

Figure 126 Temperature Line condition

b) Fix Pressure [Point]

In most cases, it is recommended to fix the pressure at least in one point of the control domain (taken as reference). If this condition is not applied, Tdyn makes some corrections and the solution of the problem is equally achieved most of the times. In this case, it will be applied to the bottom right corner.