About the yaw Angle bouncing back to 0 degrees

[May0048]

Dear, I set NacYaw in ElastoDyn to the same Angle as YawNeut in ServoDyn, but the calculation starts bouncing back to 0 degrees. How should I solve this problem?

[jjonkman]

Dear @May0048,

Have you enabled active nacelle-yaw control or defined an override yaw maneuver in ServoDyn that would overwrite the value of YawNeut?

Best regards,

[May0048]

Dear @jjonkman I set static yaw angle within the ElastoDyn input，and YCMode is turned off at ServoDyn. The calculation starts still bouncing back to 0 degrees.

Best regards,

[jjonkman]

Dear @May0048,

When you change YawNeut in ServoDyn to match NacYaw in ElastoDyn, did you save your changes? Is ServoDyn enabled?

Best regards,

[May0048]

My ElastoDyn and ServoDyn file Settings are as follows

[jjonkman]

Dear @May0048,

Your input file is not consistent with the behavior you are describing. It appears that you have the nacelle-yaw degree of freedom disabled in ElastoDyn (YawDOF = FALSE), in which case the nacelle-yaw angle should remain fixed at the 10-degrees initial condition you have set throughout the entire simulation.

Best regards,