HydroDyn

[LeoHongLiZuo]

Dear guys,
I want to set 2ND-ORDER WAVES in HydroDyn, and Openfast it works until it's setting.
My 2ND-ORDER WAVES settings are as follows.

The following picture is the error generated after setting.

The error is MD_UpdateStates:NaN state detected.
Does anyone else have the same problem or know how to solve it?
Thanks!

[jjonkman]

Dear @LeoHongLiZuo,

It doesn't look like enabling second-order wave kinematics triggered an immediate error. The error appears to happen well along (48 minutes of simulation time) into the simulation. Can you clarify if the floating wind turbine response is reasonable up until the error? Is the solution slowly diverging over time or does it diverge immediately at 48 minutes in?

Best regards,

[LeoHongLiZuo]

Dear Jonkman,
48 minutes of simulation time part of results are shown below.

After checking, I thought it might not be because the results diverged that the error occurred.
As illustrated in following figure, I think the reason for the error may be that the initial document(Platform) given did not contain the second-order wave kinematics.

I'm going to try adding the second-order wave kinematics and run it again and see if I get an error
Best regards!