文档介绍：第一章
1-1 P=：^^wkg/m 3
906 d =
1000
=
1-2
)273 p k 273 、
0 27S t 101325 273 + 400
1= 0,544 kg/m
1-3
_ 1 dV _ J V2 —Vi
dt V t2 -ti Vi
3
V =a (t _ t)V +V =550 乂 10 dx (80l20)x 6Of 60= m /h 2 V 2 1 1 1
1-4
1 dV 1 V2 -Vi 1 995乂10毛一产 10T
- =― = 6 6 3 =5^10
_ x _ 乂 一
dp V P2-pi Vi 210 10 「10
1/
Pa
1-5 " = 入 10 7 M 678 = 2,9 * 104 P& ' S
1-6
N — ■
一 p 一
_6
i,3 io m /s
1-7 (1) u=〃= =5。。。= 26n m/S
60 60
Q =^-Q = 264 ==
dy 6 < 10 之
1/s
(2)
M = F _ = p AJ-U_d= p^dLdU-d
2 dy2 dy2
2M dy 于 .
-2 = 2
兀 x x
d Ldu 314
—‘= ICT 10
Pa • s
(3)T
=p. du. = x -3乂
dy 5. 33 10
； 丁 =；V PH
1-8 (1)2*=2、
(2)t =h胆=2y=2-1 = 8
(2)
1-9 (1) F =2 RA-du = 2N dy
T = kdtt- =
dy h
⑶当
uo所以，
="业=
dy
1-10
= + = N + R
F R F2 ( 1 2
du
du
—二 N —
)Ady 3 i A dy
1 0,03 29 N
1-11
Hta
M= f
1-12
Pa • s
dM dF r
Hta
dM= f N
0
§ sin 0
_ -dn
60
dy dA r
6
2 r
a
dr
3 sin 0
200=
60
2
dr
2： =L933 Pa'S
a sin r
2山
7K小
2 62m/s
6 sirf/
J-
6 a sin dr
(H%) 4
峻pH 4tg 3a
25cos a
A = 'dL = ' =0-3925
du
F = %—=
dy
- 0
x -
10
3N
P ~Fu 一 "1()3 x -11 .05 kW
1-13 N =vP = ： 104 Mo 92乂 1000 = PH * S
_ _ _ 2
A- \L - 0,1524" -0-1459 m
=N ①= x x
F Ady
1526 3 = 736. 2 N
X 一 c 10
P -Fv - 736,2 ^6
1-14
du CI _0 2Mttq 3
= * = N = k •冗 -
i A i 6 6
dM dF r dAdyr 2 rdr r r dr
R/r - 3 a MjlCO a 4
M = idM = f2 2 「dr= d_
' A '0 g 328
1-15 A = "dL = J l=
^10^ x ^0
= 102N
dy
1-16 m2
A = 7rDb = =
du u _0 A 9
N =Fu =g—u= .A - u =卜 AuJ
dy §
肉 炉
=i—―
u \ \
6
= m/s
60u 60 x
n 七
89 56to9or/min
11r7 N = vP = x — x = P n • c
1 " 1 / 10 4 918 1 a d
=N迎=
A dy
x
0.