in taminar -Jtou 0
System of simplesgcometry
Of viscosity and the conceptaf Momentum Balance
1mau a7 p22u aM H Themaximum Velocil- The average Velocityoy The shear stren atasurface Thest quantihic, can be Obeained eaily once the vetocity protiles akKnowon . The mtthods and problemgiven in thius hyu0.m0nI qa15hpo3S 07 mddo nq4oyJ
at each point in the stram do not change Iwith time
-7 HeR WIe WiU scc j
Plow oJ a -Tallinq Tilm, Flow through a circuar tiibcand Fow thnugh an annulu.
Mo mentum Balance cnd Boundary conditons;
Open syskems through lAl hich the Tluid iS
Varies.
For stcady stat ftou, thc momentum balance Overaskeuisi
nonb ral ofmomentum Sraaofmomentuim in by convecHveur transportv rum.x
+ S rad OfmomeKtuMi S ra& Of momertun in bj molecuar transport
wmadasyHnAcoe
Vanabl
?iJ-yetocity Siep 6:aGctvclocity distmbaion
LMaumum veo&eyrj
Y!om tel n
(a) Ae solid-twid intrfacel the Hidvelocity Equal the velocity with whichj the solid isuir tace is moving, thustabment is appliel tb bothi the tanqential and the nom