[mooving]

I computed the report definition with right click, then it prints some value.
but as in the second picuture when i compute in the setup panel
it prints some error message...
what does the message mean?

[vinerm]

This error implies missing data, such as, no-selected surface for the monitor.

[mooving]

thank you for the answer
the problem was in calculation setting.
but here's another question.
i wanna simlulate for 60seconds with 60iterations.
in other word, I wanna divide 1 minute into 60 iterations.
How have I gotta set the values in the picture?

[vinerm]

The requirement of running a 60s simulation with 60 iterations is not well-defined. Iterations are what solver uses to reach a converge solution in each time-step. And time is the simulation time over which you want the system to evolve. You may or may not be able to to use 60 iterations over 60 s. That depends on the time-step that you can use and how simple the flow structure is. If you can use a time-step of 1 s then you can use NITA scheme to complete 60 s in 60 iterations. But NITA will have convergence issues if flow-structure is complex. Furthermore, use Period-Based or Frequency-Based approach if the flow is statistically steady, i.e., it has a rhythm, otherwise, use fixed approach.