Here you can find a collection of tutorials and accompanying files.

Tutorials

Tutorial 1: Building a Simple 2D Model

A two-layer waveguide is developed and analyzed. This problem mirrors a Pekeris Waveguide and incorporates both a water and sediment layer with constant properties. The energy from a continuous noise source spreads through a range-independent domain and diminishes in value as it spreads and is absorbed by the sediment layer. This tutorial walks users through the development, solution, and analysis of the problem.

Tutorial 1

Pekeris Example Files

Tutorial 2: Pre-processing for a 2D Model

A 2D cross-section is pulled from bathymetric data around Newport, Oregon, USA. This problem mirrors the setup in Tutorial 1 of a Pekeris Waveguide and incorporates both a water and sediment layer with constant properties. The energy from a continuous noise source spreads through a range-independent domain and diminishes in value as it spreads and is absorbed by the sediment layer. This tutorial walks users through the setup of the problem.

Tutorial 2

Tutorial 2 Example Files

Tutorial 3: Post-processing for a Simple 2D Model

Tutorial 3 expands upon the post-processing performed in Tutorial 1. Further details are given to help navigate the netCDF output files and perform more detailed analysis with the time-history of pressure at individual points and plotting the planar pressure field solutions.

Tutorial 3

Tutorial 3 Example Files

Additional Example Files

These examples provide additional MATALB scripts to develop a range of problems that can be solved with Paracousti. While the final NetCDF input and output files are not included here, they are available upon request.

Unbounded Spherical Spreading

A standard validation problem is to determine how a sound pulse travels and decays as it moves away from its source. In an unbounded system a monopole source spreads evenly in all directions and its energy decays inversely with range.

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A comparison of the pressure time history between Paracousti and an analytical solution for spherical spreading.

Spherical Example Files

2-Layer Waveguide along a Coastline

These files develop a model similar to that in Tutorial 1, but adds increasingly complex bathymetry by interpolating measurements from a file.

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The sound pressure level for a continuous source off a coastline.

Coastline Example Files