Table 1: Grid sensitivity check on the aerodynamic coefficients of the head car.

 

Case

 

CFy-0°

 

CFz-0°

 

CFy-15°

 

CFz-15°

 

Coarse mesh

 

0.004

 

0.043

 

1.467

 

1.562

 

Fine mesh

 

0.004

 

0.004

 

1.462

 

1.569

 

Error

 

0%

 

2.3%

 

3.4%

 

4.5%