Heave and Pitch Simulation of Ship hull moving through head sea waves

Heave and Pitch Simulation of Ship hull moving through head sea waves - دوفازی و دینامیک مش

Introduction
Ships moving through head sea waves predominantly encounter heave and pitch motions while the other four motions (roll, yaw, surge, sway) are negligible. In this tutorial a wigley hull heave and pitch motion is simulated in head sea waves

This tutorial demonstrates how to do the following

Use VOF multiphase model of Fluent to solve open channel flow

Use open channel wave boundary condition to generate shallow waves

Use Numerical Beach option to suppress the numerical reflection near the outlet

Use dynamic mesh six-dof feature to model motion of the hull

Restrict 4 degree of motions out of 6 degree using User defined Function - UDF

Post-process the resulting data

Problem Description
The schematic of the problem is shown in Figure. The problem is to model heave and pitch motion of ship hull going through the head see waves
The problem considers incoming flow at 1.5 m/sec with wave specification as follows

Wave amplitude = 0.01925 m

Wave length = 3.85 m

Phase angle = -270 degrees

Water bottom level is at 2.75m below free surface level. For this problem geometry is created such that Z axis is the vertical axis and z=0 is the free surface level. Flow is going along +X direction and Y axis is the lateral axis