cranfield0008

measur effect two dimension three dimension rough element boundari layer transit studi effect rough transit dryden found basi avail data effect two dimension rough element trip wire could repres reason well term function relat reynold number transit base distanc lead edg height rough element boundari layer displac thick posit element suggest addit data obtain primarili extend rang higher valu cours investig transit flat plate conduct nation bureau standard result twodimension rough element obtain appear desir see whether row three dimension rough element would behav way