Mohlala o bonolo oa lipalo oa phallo ea mokelikeli mofuteng o tloaelehileng oa mocheso oa mocheso o hlabang moo likheo pakeng tsa mahare le marako a lisebelisoa li leng moqotetsane, e le hore tlhaloso ea lubrication-theory ea phallo e sebetse, e hlahisoa. Haholo-holo, ho phalla ho tsitsitseng ha isothermal ea mokelikeli oa Newtonian ho pota-pota letoto la nako le nako la li-scraper blades ka mocha o nang le lebota le le leng le tsitsitseng le le le leng le tsamaeang, ha ho e-na le khatello ea khatello e lebang lehlakoreng le pota-potileng lebota, ke tlhahlobo. Phallo e na le likarolo tse tharo, empa e senyeha ka tlhaho ho ea ho "phalla" ea mahlakoreng a mabeli e tsamaisoang ke moeli oa moeli le "longitudinal" e tsamaisoang ke khatello. Lintlha tsa pele tsa sebopeho sa phallo e pharalletseng li nkiloe, 'me, haholo-holo, maemo a tekano a mahare a baloa. Ho bonts'oa hore kamano e lakatsehang pakeng tsa li-blades le lerako le tsamaeang e tla fumanoa, ha feela mahare a pota-potiloe ka ho lekaneng haufi le lipheletsong tsa bona. Ha kopano e lakatsehang e finyelloa, mohlala o bolela esale pele hore matla le li-torque holim'a li-blades li bonngoeng, ka hona mohlala o akaretsa ho kenyelletsa liphello tse ling tse tharo tsa 'mele, e leng boitšoaro ba molao oa matla a se nang Newtonian, ho thella ka meeli e thata, le cavitation. libakeng tse nang le khatello e tlase haholo, e 'ngoe le e 'ngoe e bonts'oang ho rarolla liphapang tsena. Qetellong ho tšohloa mofuta oa phallo ea longitudinal.