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

Table 3

Normalized speedup for Grid3 (ONERA M6 wing) up to 4096 ranks.

#Ranks	rhoCentralFoam	rhoCentralRK4Foam	% increment
128	1	1	0
256	1.871	1.896	1.336
512	3.275	3.527	7.695
1024	5.098	5.809	13.947
2048	6.341	9.115	43.747
4096	6.895	15.39	123.205