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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