Fluent mesh penetration warning

[Lee]

Hello, everyone,

    When I clicked the “initialize” option, the warning “Info: Interface zones penetrate each other. This could adversely affect your solution” appeared.

    As is shown in figure 1, whole fluid domain consists of two parts: fluid domain 1 and domain 2, interface between them consists of surface 1(belong to domain 1) and surface 2(belong to domain 2).

    As is shown in figure 2, there two versions of fluid domain 1: fluid domain 1-v1 and fluid domain 1-v2. And in figure 1, the fluid domain 1 is v1.

    The problem is: when I put fluid domain 1-v1 in whole fluid domain, there was no warning message, shown in figure 3, however, once I chose the fluid domain 1-v2 as the fluid domain 1, warnings appeared, shown in figure 4.

    I did the analysis of interference between parts in Creo, there is no interference in this model.

    Could anyone tell me the reason behind this? Thanks!

Regards,

Figure 1 whole fluid domain

Figure 2 Modifications on fluid domain 1

Figure 3

Figure 4

[Federico]

Hello Lee, 

If you have already checked that there is no interference in your model, I would run this case and monitor the solution at the interface. Fluent is finding intersections based on a proximity threshold, but it is possible that this does not impact your solution.

[Lee]

Hi, Federico,

  Thanks for your reply, I also found that even though Fluent issued this warning,  the simulation still ran normally and the produced correct result.