title: Gaussian Pulse in Pressure in a Cube
@warning WORK IN PROGRESS @endwarning

# Gaussian Pulse in Pressure in a Cube # {#eg_GPP}

In this example, we will simulate a Gaussian pulse in pressure in a simple
pre-defined cube with periodic boundaries. For this simple geometry, we even do
not need seeder.

The objectives of this example is to introduce how to:
* Use a pre-defined geometry instead of creating a mesh with Seeder.
* Simulate the Gaussian pulse in the cube using Musubi.
* Create 2D plots using the Gleaner tool. Gleaner is a Python tool that extracts
  data from Musubi ASCII output and uses the plotting library Matplotlib in
  Python to create a plot.
* Validate the numerical results by comparing them against the analytic
  solution. The latter one is calculated using NumPy, a mathematic extension for
  Python.
* Compare the simulation results (L4) to previously generated data obtained with
  higher resolution (reference folder, L5 & L6) to experience the influence of
  the resolution.

## ToDo ##
This file has to be filled with content like:
* Problem description
* Formulas
* Results
* Comparison for different resoultions
* How to run the simulation
