e!>ted 10 represem the velocity diSlribUtion in turbulent boundary la~er:!. With adverse pre~sure grC'ldll~m o .... er smooth slJrface' by a Iinedr combination 01 1"'0 u,",'''er',a' lu!'\ClIQ!'\~. One IS the well k{1own law of the ",all, lhe clt-.er ttle Iilw 0' [hi! wake which is charactl!rised by the profile at a point of sotl;lardtlQn or rtanachemenr. Tf'lc ce rou~hne~~ fune tlon