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Table 1 Grid independence test

From: Optimization on the Crosswind Stability of Trains Using Neural Network Surrogate Model

Item

Number of grids

Cd (head)

Cl (head)

Cd (mid)

Cl (mid)

Cd (tail)

Cl (tail)

EXP

0.177

−0.062

0.072

0

0.196

0.192

mesh1

26.0 mil.

0.189

−0.041

0.086

−0.007

0.209

0.235

mesh2

31.4 mil.

0.183

−0.039

0.090

−0.004

0.205

0.222

mesh3

48.1 mil.

0.182

−0.036

0.093

−0.003

0.212

0.220

mesh4

58.9 mil.

0.183

−0.034

0.088

−0.007

0.203

0.222