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“„Š 532.5

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2

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l

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ãà ¢­¥­¨© ‹ ¯« á 

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H

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2

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Ðèñ. 2.

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1

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+ @

2

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1

@z 2

=0 ¯à¨ 06z 6H

1

; (1)

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=0 ¯à¨ ,H

2

6z 60 (2)

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1

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=0; '

2 j

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@'

2

@t

t=0 =0;

(3)

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1

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1

@x

x=l

=0; (4)

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2

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x=0

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2

6z 6,H

2 +h;

0 ¯à¨ ,H

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+h <z 60;

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2

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2

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1

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1

=0 ¯à¨ z =H

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; (6)

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1 @'

1

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=

2

@ 2

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2

@t 2

+

2

2 B

2

0 '

2 +g

2 @'

2

@z

¯à¨ z =0; (8)

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2

@z

z=,H2

=0; (9)

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| ¨­¤ãªæ¨ï

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2

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2

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: (12)

„«ï ­¥¯à®¢®¤ï饩 ¦¨¤ª®á⨠íâ  § ¤ ç  ¯®áâ ¢«¥­  ¨ à¥è¥­  ¢ [4].

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1;2

(x;z;p)= +1

Z

0 '

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(x;z;t)e ,pt

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§ -¯¨èãâáï á«¥¤ãî騬 ®¡à §®¬

'~

ãá«®¢¨-£¤¥

(p)cosa

n (t)cos

n

sin r sin

q cos

q

sin r sin

q cos

s

n =

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0

2

1+

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n H

1 )th(a

n H

2 )

1+

1

2 th(a

n H

1 )th(a

n H

2 )

;

th(a

n H

1 )=

1,e ,2a

n H

1

1+e ,2a

n H

1

; th(a

n H

2 )=

1,e ,2a

n H

2

1+e ,2a

n H

2 ;

sh(a

n h)

ch(a

n H

2 )

= e

,an(H2,h)

,e

,an(H2+h)

1+e ,2a

n H

2

; h<H

2 :

‹¨â¥à âãà 

1. ®¢åˆ.‹. ’¥å­¨ç¥áª ï£¨¤à®¬¥å ­¨ª .|‹.: Œ è¨­®áâ஥­¨¥,1976.|501á.

2. ®¢åˆ.‹,Š ¯ãá⠀.,—¥ª¨­.‚. Œ £­¨â­ ï£¨¤à®¤¨­ ¬¨ª ¢¬¥â ««ãࣨ¨.|Œ.:

Œ¥â ««ãࣨï,1974.|240á.

3. ‘¯à ¢®ç­¨ª ¯® £¨¤à ¢«¨ª¥ ¯®¤ । ªæ¨¥© ‚. €. ®«ìè ª®¢ .|Š¨¥¢: ‚¨é  誮« ,

1977.|278á.

4. ‘®§ ­®¢ ‚. ƒ, Œã§ ¥¢ ˆ. „, ’ã ¥¢  †. „., Œã§ ¥¢  ’. ‚. ®áâ ­®¢ª  ¨ à¥è¥­¨¥

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áâà â¨ä¨-æ¨à®¢ ­­®£® ¢®¤®¥¬  // ˆ§¢. ¢ã§®¢. ‘¥¢¥à®-Š ¢ª §áª¨© ॣ¨®­, ¥áâ¥á⢥­­ë¥ ­ ãª¨.

®á⮢-­ -„®­ã.|2001.|ü1.|‘.104{106.