AddCLin Matrix

Dear all,

Is ‘AddCLin - Additional linear stiffness’ related to the mooring system?

Best regards,

Dear Fernando,

AddCLin in HydroDyn for FAST v8 is a 6x6 stiffness matrix that can be used to augment stiffness-related terms modeled elsewhere by FAST from e.g. hydrostatic stiffness, system weight, and mooring stiffness. We’ve used it e.g. to tune the natural frequency of a model to measured data when there are uncertainties in the actual system stiffness.

We are working on a HydroDyn user guide and theory manual that–once released–should help clarify how the module works.

Best regards,

Hi Jason,

Thank you very much. I wasn’t understanding your description of this concept in one of your reports. Now it’s clear!

Best regards,