11- 2012

()

( )

V = dv3

S = ds2

dsv = dv

3 /

ds2

=

da2

FD = 3dd u

(NRe < 0.2)

df

dst2 = dv3 / dd (NRe < 0.2)

()

Stokes

d

(dv / ds)2

1

00

,

x

, d

1

00

,

x

, d

dx

dd

1

00

,

x

, d

1

00

,

x

, d

dx

dd

0 0dx

/ dd

0 0 , d0 0

dx/ d

d0 0 , d

mesh =

1/2

Tyler 200 mesh m

Coulter

1- 1m

1nm

0.5 - 1m

1 - 1m

1 - 1m m

10

11- 2012

(,)

()

Rittinger E = = KR fc ( - ) Io G

1 L2

1 L1

Kick E = = Kk fc ln Io G

L1 L2

Bond E = = KB ( - ) Io G

1 L2

1 L1

Dodge Blake

-

Ncr = 42.4 D

Neff = 0.75 Ncr

1. 2. 3. (,

) 4. 5. 6. 7.

1. 2.

3. 4.

5.

6. 7.

11

11- 2012

,

12

,

11- 2012

-

FG = V (s f) g

FD =CD A f u2 /2

FG = FD

ucr2 = 2 V (s f) g / (CD A f ) u = ucr y()

-

-1m

-

- Ball-Norton