Environmental Engineering Reference
In-Depth Information
easilyobtain the following expression:
N
I
(
A
I
Pn
−
B
I
Pn
)
k
I
Pn
η
n
(
y
)
+
(
A
I
SVn
+
B
SVn
)
n
W
I
n
(
y
)
η
n
=
0
(
A
I
Pn
−
B
I
SVn
)
n
n
(
y
)
,
N
II
W
II
B
I
Pn
)
k
I
Pn
η
II
n
(
y
)
(
A
I
SVn
+
II
=
+
η
n
=
0
(4.72)
(
A
I
Pn
+
B
I
Pn
)
n
(
y
)
N
I
n
W
I
n
(
y
)
+
(
A
I
SVn
−
B
SVn
)
k
SVn
χ
I
I
−
χ
n
=
0
(
A
I
Pn
+
B
I
Pn
)
n
(
y
)
,
N
II
W
II
n
II
n
(
y
)
(
A
I
SVn
−
B
I
SVn
)
k
I
SVn
χ
II
=
−
χ
+
n
=
0
(4.73)
N
I
)
(
A
I
Pn
+
B
I
Pn
)(
k
I
Pn
)
2
I
n
(
y
)
λ
+
μ
−
η
(
2
n
=
0
n
(
y
)
+
(
B
SVn
−
A
I
SVn
)
k
SVn
n
W
I
η
I
B
I
Pn
)
n
2
N
I
W
I
(
A
I
Pn
+
I
n
(
y
)
+
0
λ
−
η
n
=
n
(
y
)
+
(
A
I
SVn
−
B
SVn
)
k
SVn
n
W
I
η
I
N
II
)
−
(
A
I
Pn
+
B
I
Pn
)(
k
I
Pn
)
2
II
=
(
λ
+
2
μ
η
n
(
y
)
=
n
0
I
n
(
y
)
+
(
B
I
SVn
−
A
I
SVn
)
k
I
SVn
n
W
II
η
−
(
A
I
Pn
+
B
I
Pn
)
n
W
II
2
N
II
II
+
0
λ
η
n
(
y
)
=
n
I
n
(
y
)
,
+
(
A
I
SVn
−
B
I
SVn
)
k
I
SVn
n
W
II
η
(4.74)