Lid-driven cavity flow benchmark u-velocity values from Ghia, U. K. N. G., Ghia, K. N., & Shin, C. T. (1982), Journal of computational physics, 48(3), 387-411.

ghiau.txt

# Ghia, U. K. N. G., Ghia, K. N., & Shin, C. T. (1982). 
# High-Re solutions for incompressible flow using the Navier-Stokes equations and a multigrid method. 
# Journal of computational physics, 48(3), 387-411. 
#
# TABLE I
# Results for $u$-velocity along Vertical Line through Geometric Center of Cavity
#--------------------------------------------------------------------
#                                   Re
#       -------------------------------------------------------------
#  y      100      400      1000     3200     5000     7500    10000
#--------------------------------------------------------------------
1.0000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000  1.00000
0.9766  0.84123  0.75837  0.65928  0.53236  0.48223  0.47244  0.47221
0.9688  0.78871  0.68439  0.57492  0.48296  0.46120  0.47048  0.47783
0.9609  0.73722  0.61756  0.51117  0.46547  0.45992  0.47323  0.48070
0.9531  0.68717  0.55892  0.46604  0.46101  0.46036  0.47167  0.47804
0.8516  0.23151  0.29093  0.33304  0.34682  0.33556  0.34228  0.34635
0.7344  0.00332  0.16256  0.18719  0.19791  0.20087  0.20591  0.20673
0.6172 -0.13641  0.02135  0.05702  0.07156  0.08183  0.08342  0.08344
0.5000 -0.20581 -0.11477 -0.06080 -0.04272 -0.03039 -0.03800  0.03111
0.4531 -0.21090 -0.17119 -0.10648 -0.86636 -0.07404 -0.07503 -0.07540
0.2813 -0.15662 -0.32726 -0.27805 -0.24427 -0.22855 -0.23176 -0.23186
0.1719 -0.10150 -0.24299 -0.38289 -0.34323 -0.33050 -0.32393 -0.32709
0.1016 -0.06434 -0.14612 -0.29730 -0.41933 -0.40435 -0.38324 -0.38000
0.0703 -0.04775 -0.10338 -0.22220 -0.37827 -0.43643 -0.43025 -0.41657
0.0625 -0.04192 -0.09266 -0.20196 -0.35344 -0.42901 -0.43590 -0.42537
0.0547 -0.03717 -0.08186 -0.18109 -0.32407 -0.41165 -0.43154 -0.42735
0.0000  0.00000  0.00000  0.00000  0.00000  0.00000  0.00000  0.00000