²é¿´: 1192  |  »Ø¸´: 36

wgdd

ľ³æ (ÕýʽдÊÖ)

[ÇóÖú] ÇóÖúÒ»¸öÊýÖµ»ý·ÖÎÊÌ⣬ÓÃmatlabµÄquadgkº¯ÊýÀ´¼ÆË㣬лл£¡

ÏÖÇó½âÒ»¸ö°ëÎÞÏÞÕðµ´»ý·ÖÎÊÌ⣺

±»»ýº¯ÊýΪs*besselj(0,s*R)./(s.^2-k0^2), »ý·ÖÇø¼äΪ[0,inf], ÆäÖÐR=6, k0=10, ¾ùΪÒÑÖª³£Êý¡£ÎÒ´òËãÓÃÁ½ÖÖ·½·¨À´¼ÆËãÕâ¸öÎÊÌâ¡£(½âÎö½âºÍÊýÖµ½â)

·½·¨Ò»£¬½âÎö½â
¶ÔÓÚÕâÑùÒ»¸ö»ý·Ö£¬¿ÉÒԲ鵽ÊýѧÊÖ²áÖлý·Ö½á¹ûΪpi*i/2*besselh(0,1,k0*R). ¾­¹ý¼ÆËã¿ÉÒԵõ½½á¹ûΪ-0.0744¡£
¼ÆËã³ÌÐò
% analytic method
k0=10;
R=6;
p_inc=real(pi*1i/2*besselh(0,1,k0*R));

·½·¨¶þ£¬²ÉÓÃmatlabÖеÄquadgkº¯Êý½øÐмÆË㣬ÓÉÓÚk0ÎªÆæµã£¬ËùÒÔ½«»ý·ÖÇø¼ä·ÖΪÁ½¿é¡£[0,k0]ºÍ[k0,inf]£¬¼ÆËã½á¹ûΪ0.0390
¼ÆËã³ÌÐò
% numerical method
k0=10;
R=6;
p_f=@(s)(s).*besselj(0,s*R)./(s.^2-k0^2);

p1=quadgk(p_f,0,k0);
p2=quadgk(p_f,k0,inf);

p_incN=p1+p2;

Çó¸÷λ´óÅ£Ö§ÕУ¬ÎªÉ¶Á½ÖÖ·½·¨²î±ðÕâô´óѽ~ÕýÈ·µÄÊýÖµ»ý·Ö·½·¨Ó¦¸ÃÊÇÔõôÑùµÄÄØ£¿Ê®·Ö¸Ðл£¡@ÔÂÖ»À¶@beefly
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
2Â¥2017-08-17 17:25:05
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
3Â¥2017-08-17 19:47:06
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
4Â¥2017-08-17 22:59:40
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
5Â¥2017-08-18 01:07:01
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
6Â¥2017-08-18 02:06:45
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
7Â¥2017-08-18 13:54:45
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
8Â¥2017-08-18 15:56:36
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
9Â¥2017-08-18 16:43:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
10Â¥2017-08-19 00:30:27
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ wgdd µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 0703»¯Ñ§µ÷¼Á +3 ÄÝÄÝninicgb 2026-03-17 3/150 2026-03-18 10:29 by macy2011
[¿¼ÑÐ] ÉúÎïѧ071000 329·ÖÇóµ÷¼Á +3 ÎÒ°®ÉúÎïÉúÎﰮΠ2026-03-17 3/150 2026-03-18 10:12 by macy2011
[¿¼ÑÐ] 304Çóµ÷¼Á +11 СÐÜjoy 2026-03-14 12/600 2026-03-18 09:59 by macy2011
[¿¼ÑÐ] 278Çóµ÷¼Á +5 ÑÌ»ðÏÈÓÚ´º 2026-03-17 5/250 2026-03-18 08:43 by ÐÇ¿ÕÐÇÔÂ
[¿¼ÑÐ] 281Çóµ÷¼Á£¨0805£© +3 ÑÌÏ«Ò亣 2026-03-16 9/450 2026-03-18 07:23 by ÑÌÏ«Ò亣
[¿¼ÑÐ] 268Çóµ÷¼Á +7 ºÃÔËÁ¬Ã಻¾ø 2026-03-12 8/400 2026-03-17 20:28 by xilongliang
[¿¼ÑÐ] ²ÄÁϹ¤³Ìר˶µ÷¼Á +5 204818@lcx 2026-03-17 5/250 2026-03-17 17:27 by Little-xue
[¿¼ÑÐ] 274Çóµ÷¼Á0856²ÄÁÏ»¯¹¤ +13 z2839474511 2026-03-11 14/700 2026-03-17 16:51 by share_joy
[¿¼ÑÐ] Çóµ÷¼Á£¬×Ü·Ö315£¬¿¼µÄÉúÎïÒ½Ò©£¬Ò»Ö¾Ô¸ºþÄÏʦ·¶´óѧ¡£µ÷¼Áµ½ÈκÎרҵ¶¼¿ÉÒÔ +4 С¶¡Ïë½ø²½ 2026-03-11 5/250 2026-03-17 16:05 by ÍâÐÇÎÄÃ÷
[¿¼ÑÐ] 278Çóµ÷¼Á +3 Yy7400 2026-03-13 3/150 2026-03-17 08:24 by laoshidan
[¿¼ÑÐ] Ò»Ö¾Ô¸985£¬±¾¿Æ211£¬0817»¯Ñ§¹¤³ÌÓë¼¼Êõ319Çóµ÷¼Á +5 Liwangman 2026-03-15 5/250 2026-03-16 17:10 by ÎҵĴ¬Îҵĺ£
[¿¼ÑÐ] 070303 ×Ü·Ö349Çóµ÷¼Á +3 LJY9966 2026-03-15 5/250 2026-03-16 14:24 by xwxstudy
[¿¼ÑÐ] 22408×Ü·Ö284Çóµ÷¼Á +3 InAspic 2026-03-13 3/150 2026-03-15 11:10 by zhq0425
[¿¼ÑÐ] 255Çóµ÷¼Á +3 Àî¼Î»Û£¬ 2026-03-12 4/200 2026-03-14 16:58 by ÓÐÖ»ÀêÅ«
[¿¼ÑÐ] 328Çóµ÷¼Á +3 5201314Lsy£¡ 2026-03-13 6/300 2026-03-14 15:31 by hyswxzs
[¿¼ÑÐ] ÕÐÊÕ0805£¨²ÄÁÏ£©µ÷¼Á +3 18595523086 2026-03-13 3/150 2026-03-14 00:33 by 123%¡¢
[¿¼ÑÐ] ²ÄÁÏר˶350 Çóµ÷¼Á +4 Íõ½ð¿Æ 2026-03-12 4/200 2026-03-13 16:02 by ruiyingmiao
[¿¼ÑÐ] ²ÄÁÏ301·ÖÇóµ÷¼Á +5 Liyouyumairs 2026-03-12 5/250 2026-03-13 14:42 by JourneyLucky
[¿¼ÑÐ] 0817»¯Ñ§¹¤³ÌÓë¼¼Êõ¿¼ÑÐ312·Öµ÷¼Á +3 T123 tt 2026-03-12 3/150 2026-03-13 10:49 by houyaoxu
[¿¼ÑÐ] 270Çóµ÷¼Á 085600²ÄÁÏÓ뻯¹¤×¨Ë¶ +3 YXCT 2026-03-11 3/150 2026-03-13 10:13 by houyaoxu
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û