流体力学答桉(刘鹤年).pdf

文档介绍：???????? ???????????????X ??? 3 13 yu y = ??X ???????????????????????????????????!?"?# !??????%&?"?#%&?'?(???? 4 1 16 3 3 x x x x x x y z u u u u a u u u xy t x y z ? ???= + + + = = ? ???? 2 5 3 3 3 2 2 2 2 13 3 1 32 3 3 31 2 16 3 3 3 .06m/s y y z z x x y y a y u y a yu xu xy xy xy a a a a = ? = = = + = ?= + = = = + ????)*??????!?????#%&? 4 1xy 3 ????????+,????-./ x y 2 2 2 2 cx u u x y cy x y = ? = + + ??? 01F /3 45??6789:;<=>?65?(?????? 2 2 2 2 - x d x = y d y x y d x d y d x d y c y c x u u x y x y = ?? = ?+ + ??-@?678??A? F? 7BC??1?X DXE!FFGHI???????J KLMN???ONPQ'ONRQ'ONPSTU'ON RSTU'V?WX XD?X D?X ?????? z 2 2 2 2 , , 0, a c x y cy cx u u u x y x y = ? = = + + ????????? z 2 2 2 2 , , 0, a c x y cy cx u u u x y x y = ? = = + + ?????????(???? 1 1 0 ( ) ( ) 2 2 y x x y z u u a a a x y ω ω ω??= = = ?= + = ? ? PQ??? xy 1 1 ( ) ( ) 0 2 2 y x xy zx u u a a x y ε εε??= + = ?= = ? ???RSTU? V?W? 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 ( ) 2 ( ) 2 ( ) 2 2 ( ) ( ) 1 2 ( ) 2 ( ) 0 0 2 ( ) y x z x y u u x y c cx x y c cy x y x y x y c x y c x y x y ωω ω?? ??+ ? + ?= ?= + ? ?? ? + + ? ?? ?+ ?+ = = = = ?