Znn3bq.jpeg
ÉÇÍ·´óѧº£Ñó¿ÆÑ§½ÓÊܵ÷¼Á
²é¿´: 2277  |  »Ø¸´: 8
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

cjf3330510

½ð³æ (ÕýʽдÊÖ)

[ÇóÖú] ÆøÒºÁ½ÏàÁ÷³ä·Ö·¢Õ¹

ÆøÒºÁ½ÏàÁ÷»ìºÏÒÔºóÐèÒª¶à´óµÄ³¤¾¶±È²ÅÄܱ£Ö¤Á÷Ìå³ä·Ö·¢Õ¹ÄØ£¿
Ͷ¸å·µÐÞ£¬Éó¸åÈËÎʵ½ÎªÊ²Ã´L/D´óÓÚ100¾ÍÄܱ£Ö¤³ä·Ö·¢Õ¹£¬ÓÐʲô¸ù¾Ý£¿´ó¼Ò¿´ÎÄÏ×µÄʱºòÓÐûÓÐÓ¡Ïó¡£¹À¼Æ»Ø´ðÕâ¸öÎÊÌâÐèÒªÒýÓõ½Ïà¹ØÎÄÏס£
лл
¡°why is an L/D of 100 considered as adequate?  Based upon what criterion?¡±
»Ø¸´´ËÂ¥

» ÊÕ¼±¾ÌûµÄÌÔÌûר¼­ÍƼö

fluentÄ£ÄâÎÊÌâ »¨»¨ÊÀ½ç

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

¼ÈȻѡÔñÁËÔ¶·½£¬ÄǾͷçÓê¼æ³Ì
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

otten0

½ð³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
cjf3330510: ½ð±Ò+15, ¡ï¡ï¡ïºÜÓаïÖú, ·Ç³£¸ÐлÄãºÜºÃµÄ´ð¸´¡£ 2013-07-23 20:42:23
ÒýÓûØÌû:
5Â¥: Originally posted by cjf3330510 at 2013-07-21 22:00:37
£¬Ð»Ð»Äã¡£ÎÒÒѾ­Ìá½»Ð޸ĸåÁË£¬Õâô¶àÌ춼ûÈ˻ظ´£¬ÎÒ¾ÍûÔÙÉÏľ³æ¡£ÎÒ·Ö±ð¼ÆËã³öÆøÒºµÄÀ×ŵÊýÊÇÔÚ900ÒÔÄÚ£¬»¹ÓÐÇ°ÃæÓÐÈ˵ÄÑо¿È¡µÄ¾­ÑéÖµÒ²ÊÇ100¾ÍĬÈϳä·Ö·¢Õ¹ÁË¡£¾ÍûÓÐÒýÓù«Ê½ËµÃ÷¡£
ÄúÌáµ½µÄL/D=0. ...

Frank White µÄ¡¶Fluid Mechanics¡·µÚÁùÕÂÖÐÓÐÌáµ½£¬ÁíÍâÓÐÆªreviewÊÇThe Development Lengths of Laminar Pipe and Channel Flows £¬ÆäÖÐÌá³öÁ˺ܶàµÄ¹«Ê½£¬¿ÉÒԲο¼Ï¡£      ÎҼǵÃÔÚ¶àÏàÁ÷ÖУ¬³ä·Ö·¢Õ¹µÄ³¤¶ÈÒ»°ãÇé¿öÏÂÒª±Èµ¥ÏàÁ÷µÄ´ó£¬¾ßÌåÎÄÏ×ÍüÁË£¡
A real and true world only lays in your own heart!
7Â¥2013-07-23 11:49:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 9 ¸ö»Ø´ð

otten0

½ð³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
cjf3330510: ½ð±Ò+10, ¡ï¡ï¡ïºÜÓаïÖú, ллÄúµÄÄÍÐĴ𸴡£ 2013-07-21 22:01:24
ÔÚ²ãÁ÷ÖУ¬L/D=0.06Re£¬Ô²¹ÜÁÙ½çÀ×ŵÊýRe=2300£¬ÕâÑùËãÀ´L/D=138,µ±È»Õâ¿ÉÒÔËãÊÇÒ»ÖÖ¼«ÏÞ£¬ÔÚʵÑéÖкܶ඼ȡ100À´Éè¼Æ£¬°´ÎÒµÄÀí½âÓ¦¸ÃÊÇÔÚ100´¦½üËÆÈÏΪÒѾ­³ä·ÖÁË£»µ±È»¿ÉÄÜ»¹ÓÐÆäËûµÄÀíÂÛ×÷Ö§³Å£¬ÄÇÎҾͲ»ÖªµÀÁË£¬Ï£ÍûÂ¥Ö÷ÕÒµ½ºóÄÜ·ÖÏíÏ£¬Ìáǰлл£¡
A real and true world only lays in your own heart!
2Â¥2013-07-08 08:51:17
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

qllq1661

ľ³æ (Ö°Òµ×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï ¡ï ¡ï
cjf3330510: ½ð±Ò+5, ¡ïÓаïÖú, ллÄú¡£ÎÒ·µ»ØµÄÐ޸ĸåÒ²ÊÇÕâÑù˵Ã÷µÄ¡£ 2013-07-21 22:02:02
»Ø´ðÉó¸åÈËÕâ¸öÎÊÌ⣬×îºÃ»¹ÊÇÒýÓòο¼ÎÄÏ×°É¡£
Â¥Ö÷¶à²é²éÏà¹ØÎÄÏ×£¬¿Ï¶¨ÓÐÈ˽üËÆÈ¡Õâ¸öÖµµÄ£¬ÕâÑùÒýÓü¸ÆªÂÛÎÄ£¬¾Í¿ÉÒÔÁË¡£
3Â¥2013-07-08 10:01:47
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ronaldo13579

Òø³æ (СÓÐÃûÆø)

ÎÒÒ²ÕýÓдËÒÉ»óÄØ
¶ØóÆÀøÖ¾ ¾«ÇÚÇóѧ
4Â¥2013-07-09 10:06:42
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Çóµ÷¼Á +12 Á§ÜÔÒ»¶¨Éϰ¶ 2026-04-10 13/650 2026-04-14 00:08 by Equinoxhua
[¿¼ÑÐ] ²ÄÁϹ¤³Ì281»¹Óе÷¼Á»ú»áÂð +34 xaw. 2026-04-11 35/1750 2026-04-13 22:22 by zhq0425
[¿¼ÑÐ] Ò»Ö¾Ô¸»¦9£¬326ÇóÉúÎïѧµ÷¼Á +9 Áõīī 2026-04-13 9/450 2026-04-13 18:59 by lbsjt
[¿¼ÑÐ] ¿¼ÑжþÂÖµ÷¼Á +10 ¹ÊÈË?? 2026-04-09 10/500 2026-04-13 09:55 by szhize
[¿¼ÑÐ] Çóµ÷¼Á288 +7 ioodiiij 2026-04-10 9/450 2026-04-13 08:33 by Hayaay
[¿¼ÑÐ] 322Çóµ÷¼Á£¬08¹¤¿Æ +4 ½ñÌìÊǸöСºÅ 2026-04-08 4/200 2026-04-13 00:20 by baobaoye
[¿¼ÑÐ] 2±¾£¬³õÊÔ303£¬0860Çóµ÷¼Á +6 floriea 2026-04-12 8/400 2026-04-12 18:13 by zhouxiaoyu
[¿¼ÑÐ] ҩѧר˶µ÷¼Á +8 ? һ·Éú?»¨? 2026-04-10 10/500 2026-04-11 21:21 by zhouxiaoyu
[¿¼ÑÐ] ũѧ0904 312Çóµ÷¼Á +6 Say Never 2026-04-10 6/300 2026-04-11 10:33 by wwj2530616
[¿¼ÑÐ] »úеר˶270Çóµ÷¼Á£¬½ÓÊÜ¿çרҵ +12 ÀÏʦ¿´¿´ÎÒ°Éaba 2026-04-09 14/700 2026-04-11 10:21 by laoshidan
[¿¼ÑÐ] 275Çóµ÷¼Á +9 1624447980 2026-04-08 10/500 2026-04-11 10:20 by Delta2012
[¿¼ÑÐ] 263ÄÜÔ´¶¯Á¦×¨Ë¶Çóµ÷¼Á +3 ¼Ó´óºÅ·¹ºÐ´ü 2026-04-10 3/150 2026-04-10 22:23 by 286640313
[¿¼ÑÐ] ¿¼Ñе÷¼Á-²ÄÁÏÀà-284 +28 Ïë»»ÊÖ»ú²»Ïë½âÊ 2026-04-08 28/1400 2026-04-09 20:08 by µ¹Êý321?
[¿¼ÑÐ] ¸´ÊÔµ÷¼Á£¬Ò»Ö¾Ô¸Ö£ÖÝ´óѧ²ÄÁÏÓ뻯¹¤289·Ö +31 ˶ÐǸ° 2026-04-08 31/1550 2026-04-09 16:54 by Delta2012
[¿¼ÑÐ] 085501»úеӢ¶þ77×Ü·Ö294Çóµ÷¼Á£¬½ÓÊÜ¿çרҵѧϰ +6 ÊØ·¨¹«ÃñØÁ¼Í 2026-04-08 6/300 2026-04-09 15:55 by wp06
[¿¼ÑÐ] 328Çóµ÷¼Á +17 lftmya 2026-04-07 18/900 2026-04-09 08:05 by 5268321
[¿¼ÑÐ] Çóµ÷¼Á +13 Æâluck 2026-04-07 13/650 2026-04-08 22:46 by Öí»á·É
[¿¼ÑÐ] 296Çóµ÷¼Á +3 Íô£¡£¿£¡ 2026-04-08 3/150 2026-04-08 22:00 by zhouyuwinner
[¿¼ÑÐ] 287Çóµ÷¼Á +6 Fnhc 2026-04-07 6/300 2026-04-08 10:05 by xingguangj
[¿¼ÑÐ] Ò»Ö¾Ô¸Î÷ÄÏ090202Çóµ÷¼Á +4 ÔÚÏßÇóÓÐѧÉÏ 2026-04-07 4/200 2026-04-07 19:47 by biomichael
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û