Prerequisites

The tutorial presents a simple case study with the purpose of demonstrating functionality in AquaSim.

It is assumed that the user is familiar with the basic principles of modelling and specifying material parameters in AquaEdit, as well as conducting analyses. If you are looking for an introduction to AquaSim we advise you to start with the Basic program tutorials. Furthermore, it is assumed that the user has some experience with linear potential flow theory, and analytical solutions to the “diffraction problem”.

Introduction

This tutorial introduces how wave excitation forces are calculated analytically in AquaSim based on the theory first described in (Maccamy & Fuchs, 1954). Furthermore, you will be introduced to how radiation forces (hydrodynamic damping and added mass) are calculated, when using the “MacCamy-Fuchs” load formulation.

The purpose is to introduce the “MacCamy-Fuchs” load formulation, the theoretical background, the validity of this load formulation, how to initiate this load formulation in AquaSim, as well as comparing the results from the “MacCamy-Fuchs” load formulation with numerical results from the NEMOH solver using the load formulation “Numerical diffraction” and the analytical long wave approximation (Morison).