Лекции по гидрогазодинамике
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v
0
v
v
0
α
12 − 14
v
v
0
= f
y
x
!
;
x y
v
0
s
a 0.08 0.09 − 0.12
α 3.4 a 2.4 a
x
0
0.29
R
0
a
0.41
b
0
a
x
0
0.67
R
0
a
1.03
b
0
a
R b
(3.4
a s
R
0
+ 1) R
0
(2.4
a s
b
0
+ 1) b
0
v
0
0.96 v
0
a s/R
0
+ 0.29
1.2 v
0
q
a s/b
0
+ 0.41
Q 2.2
a s
R
0
+ 0.29
!
1.2
a s
b
0
+ 0.41
!
v
v
0
= (1 − η
1.5
)
2
,
η
Z
S
ρ v
2
d S = ,
S
y = r; d S = 2 π r dr
v
2
0
x
2
R /x
Z
0
v
v
0
!
2
r
x
d r
x
= .
R
r
R /x
Z
0
v
v
0
!
2
r
x
dr
x
= ,
v
2
0
x
2
= ; v
0
=
x
.
dS = dy
v
2
0
x
R /x
Z
0
v
v
0
!
2
dy
x
= ;
v
0
=
√
x
.
20%
40%
“
p
01
, ρ
01
, T
01
v
1
p
1
, ρ
1
, T
1
,
p
02
, ρ
02
, T
02
p
3
, ρ
3
, T
3
G
1
+ G
2
= G
3
; G
1
v
1
+ G
2
v
2
= G
3
v
3
;
G
1
c
p
1
T
1
+
v
2
1
2
+ G
2
c
p
2
T
2
+
v
2
2
2
+ Q = G
3
c
p
3
T
3
+
v
2
3
2
.
c
p
G
1
T
01
+ G
2
T
02
+ Q = G
3
T
03
,
Q
n =
G
2
G
1
.
z(λ
1
) + k
v
u
u
t
T
02
T
01
z(λ
2
) =
√
1 + k
v
u
u
t
1 + k
T
02
T
01
z(λ
2
);
p
03
= p
02
√
1 + k
v
u
u
t
1 + k
T
02
T
01
1 +
p
02
p
01
k
v
u
u
t
T
02
T
01
q
(
λ
1
)
q
(
λ
3
)
;
S
2
S
1
=
G
2
G
1
c
2
c
1
p
01
p
02
q
2
q
1
= k
v
u
u
t
T
02
T
01
p
01
p
02
q
1
q
2
.
G = ρ · v · S;
p
ρ
+
v
2
2 ϕ
2
= .
ϕ
2
[G
p
v
p1
+ G v
2
] − (G
p
+ G ) v
3
= (p
3
− p
2
) S
2
+ (p
3
− p
p1
) S
p1
=
= p
3
S
3
− p
2
S
2
− p
p1
) S
p1
.
∆ p
p
= p
p
− p
∆ p
c
= p
c
− p
∆ p
c
∆ p
p
= f(n),
n = G /G
p