Scalability of OpenFOAM Density-Based Solver with Runge–Kutta Temporal Discretization Scheme

Table 2

Normalized speedup for Grid2 (ONERA M6 wing) up to 2048 ranks.

#Ranks	rhoCentralFoam	rhoCentralRK4Foam	% increment
128	1	1	0
256	1.574	1.601	1.715
512	2.308	2.423	4.983
1024	2.916	3.575	22.599
2048	4.541	6.005	32.240