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10.11 Model Problem for the MacCormack Method: Quasi 1-D Nozzle 319
MacCormack CFL = 0.5 MacCormack CFL = 1.0
F\
f"
V
0
(D
Iterations Iterations
2
MacCormack CFL = 1.1 1.75
\ L
0.5
0.25 MacCormack CFL = 0.5
2 4 6
Iterations X
2
1.75
1.5 h
1.25 I-—
% it-
2 t
0.75F-
0.5f-
MacCormack CFL = 1.0 MacCormack CFL = 1.1
0.25 k
1
1 i i i i I i oi- -
Fig. 10.16. Nozzle model problem: Convergence curve (top) and Mach number distribu-
tions (bottom) as a function of CFL number.
