List of source terms for solvertype MAIA_DISCONTINUOUS_GALERKIN and

DG_SYSEQN_ACOUSTICPERTURB List of all available sourceTerm in DgSysEqnAcousticPerturb<nDim>::calcSource():

0: no source term

1: APE-1

2: APE-2

3: APE-3

4: APE-4

5: Convergence test

For this convergence test, these source terms are implemented: \( u, v, w = A \omega \cos[\omega (-a t + x1 + x2 + x3)] * (-a + 2 c + \mta{u1} + \mta{u2} + \mta{u3} + 2 A \sin[\omega (-a t + x1 + x2 + x3)]) \) \( p = A \omega \cos[\omega (-a t + x1 + x2 + x3)] * (3 + 2 c (-a + \mta{u1} + \mta{u2} + \mta{u3}) + 2 A (-a + \mta{u1} + \mta{u2} + \mta{u3}) * \sin[\omega (-a t + x1 + x2 + x3)]) \)

6: Artificial source (same as in the APE4Solver)

periodically oscillating Gaussian-shaped source of the form \(p = A \exp(-((x-x0)^2+(y-y0)^2+(z-z0)^2)/(2*r^2)) \sin(2*pi*f*t)\)

60: Artificial source (same as in the APE4Solver)

periodically oscillating Gaussian-shaped source of the form \(p = A \exp(-((x-x0)^2+(y-y0)^2+(z-z0)^2)/(2*r^2)) \sin(2*pi*f*t)\)

7: Dipole

Dipole source created by two monopole sources of equal strength and opposite phase and separated by a small distance (monopole sources are similar to case #6) Ref: Russell, Titlow, Bemmen: "Acoustic monopoles, dipoles and quadrupoles: An experiment revisited", 1998.

800: Spinning vortices - Ewert source terms (2D only)

This implements the qm equation on page 388 in:

Ewert, Schroeder: Acoustic perturbation equations based on flow decomposition via source filtering, 2003.