Initial value of the velocity and other variables can be entered in the Initial Data window (available at Data > Initial Data). In this case, next function have to be inserted in the Initial Valocity X field:
if(x<4)then(-8/9*y^2+20/9*y-8/9)else(0)endif |
Figure 52 Parabolic velocity profile definition |
Above function represents a parabolic velocity profile (see Figure 52) at the inflow of the channel (for x<4). This definition joint with the Velocity Field condition will impose a parabolic profile of the velocity field at the inflow.
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Figure 53 General data assignment |
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