Presentation Title

Developing a Computational Model for a Mooring System

Faculty Mentor

Martin Hoecker-Martinez

Start Date

17-11-2018 12:30 PM

End Date

17-11-2018 2:30 PM

Location

CREVELING 35

Session

POSTER 2

Type of Presentation

Poster

Subject Area

physical_mathematical_sciences

Abstract

In oceanography, physicists takes measurements in the sea by attaching waterproof instruments to large mooring cables inside the ocean. A mooring system is made up of any type of cable or rope that connects a floating buoy to an anchor fixed on the sea floor. It is very important to make sure that the anchor stays fixed so the mooring does not float away. Assuming that the main forces on cable are the drag, tension, buoyancy, and gravity, we need to find what the weight of the anchor is needed to withstand those forces. To find these properties, I used computational programming with python to simulate the forces in the ocean for models of moorings with different materials to find what the weight of the anchor is needed. Due to the nonlinear nature of the ocean, an actual mathematical solution for the whole mooring cable would be extremely complex. So instead, the program uses an iterative method to find a series of linear solution for each piece of the mooring line by breaking the cable into tiny pieces. To test the model, I ran the simulation for a steel mooring chain. The results were successful. The program showed a floating chain when the anchor was not heavy enough, and the model showed a chain with one end lying on the sea floor for an anchor with enough weight.

Summary of research results to be presented

The code program creates a cheap and effective way of simulating the shape of a simple mooring system in the ocean with uniform drag, The program can also calculate the weight of the anchor at the bottom of the ocean floor required to hold the mooring system with the input mooring properties. It provides a controlled simulation of the ocean conditions. The model can also be adjusted to test how material elasticity affect the mooring structure. It helps provide a good non-physical model for on building physical moorings. This significantly reduces the cost of building large scale test moorings.

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Nov 17th, 12:30 PM Nov 17th, 2:30 PM

Developing a Computational Model for a Mooring System

CREVELING 35

In oceanography, physicists takes measurements in the sea by attaching waterproof instruments to large mooring cables inside the ocean. A mooring system is made up of any type of cable or rope that connects a floating buoy to an anchor fixed on the sea floor. It is very important to make sure that the anchor stays fixed so the mooring does not float away. Assuming that the main forces on cable are the drag, tension, buoyancy, and gravity, we need to find what the weight of the anchor is needed to withstand those forces. To find these properties, I used computational programming with python to simulate the forces in the ocean for models of moorings with different materials to find what the weight of the anchor is needed. Due to the nonlinear nature of the ocean, an actual mathematical solution for the whole mooring cable would be extremely complex. So instead, the program uses an iterative method to find a series of linear solution for each piece of the mooring line by breaking the cable into tiny pieces. To test the model, I ran the simulation for a steel mooring chain. The results were successful. The program showed a floating chain when the anchor was not heavy enough, and the model showed a chain with one end lying on the sea floor for an anchor with enough weight.