A time-domain finite element formulation of the equivalent fluid model for the acoustic wave equation

Topical Issue - Numerical, computational and theoretical acoustics

Open Access

Figure 6

Convergence rates of time and space. For the latter, linear (p1) and quadratic (p2) FE basis functions and different duct lengths (l0 to l6) are considered. The dashed grey lines indicate specific orders of convergence. (a) Temporal convergence of configuration h5, p2, l0; (b) Spatial convergence with the finest considered time discretization t5 (Δt = 7.8125 μs).

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