[Lin_Q.B.]

Hello everyone,

I have two questions.

1、How to consider the tension of mooring lines on structural responses in fluid-structure interaction

I am simulating the fluid-structure interaction of floating offshore wind turbine (FOWT) under wind-wave loads through STAR-CCM+ and Abaqus.
Abaqus calculated the structure response through implicit unsteady analysis, and STAR-CCM+ v2306 calculated the fluid loads by SIMPLEC algorithm. I used "DFBI morphing" motion in STAR-CCM+

FOWT has mooring lines in real cases. STAR-CCM+ could calculated the mooring load through the theory of catenary.

However, the interface between Abaqus and STAR-CCM+ could not transfer the tension of mooring lines from STAR-CCM+ to Abaqus

I cannot build mooring lines in Abaqus.

How could I consider the effects of mooring lines on the structural responses of HAWT.


####################


2、how to improve the efficiency in the DFBI morphing

The background domain and overset domain exchange the information in each iteration, which cost much time. Could the exchange happen once in each timestep?

Any feedback on the approach/idea itself is welcome too.