Simulation of Vortex Shedding behind a Flat Plate with Vorticity Based Adaptive Spectral Element Method
Table 1
The comparison of results from adaptive nonconforming and conforming methods.
Methods
Conforming
Vorticity (deviation)
and (deviation)
(deviation)
St.
Re = 100
0.2434
0.2454 (0.78%)
0.2424 (0.41%)
0.2570 (5.59%)
Re = 140
0.2870
0.2910 (1.08%)
0.2742 (4.96%)
0.2712 (5.51%)
Re = 200
0.3222
0.3194 (0.8%)
0.3125 (1.37%)
0.3086 (4.22%)
Cd
Re = 100
0.2915
0.2907 (0.275%)
0.2814 (3.589%)
0.3144 (7.86%)
Re = 140
0.3389
0.3417 (0.82%)
0.3227 (5.02%)
0.3323 (1.95%)
Re = 200
0.4072
0.4095 (0.56%)
0.3745 (8.73%)
0.3394 (16.65%)
Cl
Re = 100
0.2139
0.2192 (2.417%)
0.2289 (7.01%)
0.2432 (2.48%)
Re = 140
0.3417
0.3432 (0.437%)
0.3268 (4.36%)
0.3144 (7.98%)
Re = 200
0.4842
0.4989 (2.946%)
0.4351 (10.14%)
0.3595 (25.75%)
Notes: Conforming: Conforming mesh (). Vorticity: Vorticity error based method (). and : Synthesis of velocity and pressure error based method. : estimated error decay rate () based method which the error decay rate is lower than 0.8. Deviation: The comparison of the results of the adaptive meshes method and those of the conforming meshes. St.: Strouhal number.
