This is a collection of setups for the linearized Euler equations. The definition of linearized Euler equations is provided in atl_eqn_LinearEuler_module. The examples are further distinguished into setups for three and two dimensions.
For the linearized Euler equation we need to provide a background state around which the linearization is to be done. This is given in terms density, velocity and pressure. The equation definition, therefore, looks as follows:
equation = {
name = 'linearEuler',
isen_coef = 1.4,
background = {
density = 1.225,
velocityX = 100.0,
velocityY = 0.0,
velocityZ = 0.0,
pressure = 100000.0
}
}