Reply To: part of residuals smoothed and turned to a straight line, why?

[Milne Ando]

hi,

yes, that time step size is the result from my calculation; time step size can't exceed 0.000206(s) in my case, for avoid crossing minimum cells. And in the beginning, Kármán vortexes had not formed yet, namely, the solid structure didn't oscillate initially. So it's strange and unreasonable that calculation diverged at early iteration.