Fig.1

b.) Center of tunnel: Belt on+B.L. suct. on

MEAN-VALUES

 --X--        --Y--
  0.98886104   1.50000000
  0.99021518   1.70000000
  0.99077444   1.90000000
  0.99076354   2.10000000
  0.99065812   2.30000000
  0.99062614   2.50000000
  0.99065439   2.70000000
  0.99103742   2.90000000
  0.99023316   3.10000000
  0.98963235   3.30000000
  0.99033602   3.50000000
  0.99078291   3.70000000
  0.99059497   3.90000000
  0.99047452   4.10000000
  0.99116749   4.30000000
  0.99059108   4.50000000
  0.99060488   4.70000000
  0.99098299   4.90000000
  0.99066064   5.10000000
  0.99123195   5.30000000
  0.99059820   5.50000000
  0.99074127   5.70000000
  0.99078019   5.90000000
  0.99053966   6.10000000
  0.99150684   6.30000000
  0.99124229   6.50000000
  0.99110458   6.70000000
  0.99107060   6.90000000
  0.99124160   7.10000000
  0.99004418   7.30000000
  0.99063736   7.50000000
  0.99104606   7.70000000
  0.99077790   7.90000000
  0.99159808   8.10000000
  0.99193217   8.30000000
  0.99230713   8.50000000
  0.99112581   8.70000000
  0.99118204   8.90000000
  0.99112930   9.10000000
  0.99183308   9.30000000
  0.99095158   9.50000000
  0.99148036   9.70000000
  0.99162805   9.90000000
  0.99160936  10.10000000
  0.99168185  10.30000000
  0.99177183  10.50000000
  0.99156472  10.70000000
  0.99164552  10.90000000
  0.99195217  11.10000000
  0.99174948  11.30000000
  0.99189270  11.50000000
  0.99146279  11.70000000
  0.99237743  11.90000000
  0.99309597  12.10000000
  0.99248929  12.30000000
  0.99286511  12.50000000
  0.99353285  12.70000000
  0.99269768  12.90000000
  0.99318532  13.10000000
  0.99317706  13.30000000
  0.99357389  13.50000000
  0.99369092  13.70000000
  0.99531268  13.90000000
  0.99415257  14.10000000
  0.99422039  14.30000000
  0.99383503  14.50000000
  0.99400276  14.70000000
  0.99436328  14.90000000
  0.99429833  15.10000000
  0.99459064  15.30000000
  0.99377933  15.50000000
  0.99468560  15.70000000
  0.99496712  15.90000000
  0.99578011  16.10000000
  0.99555927  16.30000000
  0.99511310  16.50000000
  0.99589557  16.70000000
  0.99622429  16.90000000
  0.99522382  17.10000000
  0.99602661  17.30000000
  0.99670943  17.50000000
  0.99711553  17.70000000
  0.99623144  17.90000000
  0.99701612  18.10000000
  0.99669440  18.30000000
  0.99720175  18.50000000
  0.99740525  18.70000000
  0.99701089  18.90000000
  0.99719259  19.10000000
  0.99783217  19.30000000
  0.99733152  19.50000000
  0.99811485  19.70000000
  0.99811192  19.90000000
  0.99767731  20.10000000
  0.99815488  20.30000000
  0.99905918  20.50000000
  0.99944353  20.70000000
  0.99938499  20.90000000
  0.99997354  21.10000000
  0.99957803  21.30000000
  0.99990261  21.50000000
  1.00031132  21.70000000
  0.99996296  21.90000000
  0.99997961  22.10000000
  1.00042415  22.30000000
  1.00012585  22.50000000
  1.00038529  22.70000000
  0.99991718  22.90000000
  1.00006491  23.10000000
  1.00029909  23.30000000
  1.00062576  23.50000000
  1.00071348  23.70000000
  1.00030996  23.90000000
  1.00068578  24.10000000
  1.00073473  24.30000000
  1.00088434  24.50000000
  1.00079233  24.70000000
  1.00101834  24.90000000
  1.00107591  25.10000000
  1.00040027  25.30000000
  1.00058423  25.50000000
  1.00059262  25.70000000
  1.00061108  25.90000000
  1.00036003  26.10000000
  1.00060079  26.30000000
  1.00045620  26.50000000
  1.00090255  26.70000000
  1.00099852  26.90000000
  1.00105731  27.10000000
  1.00111719  27.30000000
  1.00071814  27.50000000
  1.00094750  27.70000000
  1.00109737  27.90000000
  1.00120116  28.10000000
  1.00137610  28.30000000
  1.00172232  28.50000000
  1.00101998  28.70000000
  1.00068050  28.90000000
  1.00012340  29.10000000
  1.00058733  29.30000000
  0.99939429  29.50000000
  1.00011746  29.70000000
  1.00080672  29.90000000
  1.00113218  30.10000000
  1.00112542  30.30000000
  1.00137472  30.50000000
  1.00084205  30.70000000
  1.00022830  30.90000000
  1.00008313  31.10000000
  1.00021451  31.30000000
  0.99984512  31.50000000
  1.00372276  51.50000000
  1.00771280 101.50000000
  1.00859399 151.50000000
  1.01077907 216.50000000
