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m

m

φ

(k 2

+ l2

)1/2

(k + l + m )2 2 2 1/2

θ

k 

l

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8/23/2019 wm_chap7

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F     l     u    i     d      L    o   s    i     n      g     B     

u    o     y    a   n    c   

  y     

G     r    o   u      p     V     

e   l     o   c   i     t      y     

  P  h a s e   V

 e  l o c  i t y

 

   Z  -

  a  x   i  s

F     l     u    i     d      L    o   s    i     n      g     B     

u    o     y    a   n    c   

  y     

M     o   s    t     B     

u    o     y    a   n    t     F     l     u    i     d      

L    e   a   s    t     B     

u    o     y    a   n    t     F     l     u    i     d      

F     l     u    i     d      G     a   i     n    i     n      g     B     

u    o     y    a   n    

c     y     

X - axis

H     i       g    h     P     r    e   s    s    u    r    e    

 (     u     , w     , P     =   0       )     

L    o   w     P     r    e   s    s    u    r    e    

 (     u     , w     , P     =   0       )     

H     i       g    h     P     r    e   s    s    u    r    e    

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l

m

(k 2

+ l2

)1/2

(k + l + m )2 2 2 1/2

θ

φ

C g

φ

m

k 

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C

C g

C

C gC

C g

CC g

C+C g C+C g

C+C C + Cg g

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