Page 334 - Computational Fluid Dynamics for Engineers

324 10. Inviscid Compressible Flow

Implicit CFL = 0.5 e=1 Implicit CFL = 1.0 e e=1

Iterations Iterations

2
Implicit CFL = 3.0 e e=1 1.75

CO 1
S 4 2 0.75 k
O) -6E-
O
- I -7E- 0.5h
0.25 t- Implicit CFL=0.5 e e=1
1
oi- - i • , • , i
Iterations

2r-
1.75 t-
A
1.5 t-
1.25p-

0.75J-
0.5 t-
Implicit CFL=1.0e e =1 0.25 t- Implicit CFL=3.0 e e=1
i I i i i i I i i i i I

Fig. 10.19. Nozzle model problem: Convergence curve (top) and Mach number distribu-
tions (bottom) as a function of CFL number.