pressure gradient has been successfully neglected, can be determined from th« »r,„=f^ <: ■ ■ 



the velocity component other than the one retained once the prlnc^l c^n^'^f the efl^ciS^is'' 



IS one order of magnitude smaller than the one determined Such is no^- ill velocity is 



retained. Thus the equation of motion for it can under discission here and theref " f ?^°''''" 



be neglected together with the gradient of (the lem it is necessary to retain th ^'' ^^°''" 



dynamic part of) the pressure, and the flow pattern as Yih has done "^ " "''" ^""'^""" gradient. 



