Wave Induced Motion RAOs

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Wave Induced Motion RAOs

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Overview

Wave induced motion RAOs are computed using a series of regular wave simulations at various periods, in this case going from 2.5s to 30.0s in 0.5s increments. The AeroDyn module is disabled so that the effects of aerodynamic loading are not considered. The assessment focuses one heading only (head seas), so only the RAOs relating to surge, heave, and pitch are relevant. The example contains separate sections to compute RAOs for both a free-floating platform and a moored platform.

The published report on the UMaine semisub (Allen et al., 2020) presents RAOs in graph form only. The underlying data is not supplied which makes comparisons between UMaine and Flexcom a little difficult.

Surge

Allen et al., 2020

Allen et al., 2020

Flexcom - Free Floating Platform

Flexcom - Free Floating Platform

Heave

Allen et al., 2020

Allen et al., 2020

Flexcom - Free Floating Platform

Flexcom - Free Floating Platform

Pitch

Allen et al., 2020

Allen et al., 2020

Flexcom - Free Floating Platform

Flexcom - Free Floating Platform