¼¯ÍŽéÉÜ Éú²ú»ùµØ ·¢Õ¹Àú³Ì ÈÙÓþ×ÊÖÊ Ô±¹¤·ç²É Éç»áÔðÈÎ ÈËÁ¦×ÊÔ´ ²»ÐàÇéÔµMG-Öйú¹Ù·½ÍøÕ¾Êµ¾°
²»ÐàÇéÔµMG-Öйú¹Ù·½ÍøÕ¾²»Ðâ¸Ö¹Ü³§¼Ò
English
Spanish
Arabic
Portuguese
Russian
ÈÈÃŹؼü´Ê£º ²»Ðâ¸Ö¹Ü³§¼Ò ²»Ðâ¸Ö¹ÜÊ®´óÆ·ÅÆ ²»Ðâ¸Ö¹¤Òµ¹Ü
Ê×ÏÈ£¬ÎÒÃÇÀ´½éÉܲ»Ðâ¸Ö¹¤Òµº¸¹ÜµÄ×èÁ¦ÌØÐÔ¡£º¸¹ÜµÄ×èÁ¦¿ÉÒÔ·ÖΪ¾Ö²¿×èÁ¦ºÍ×ÜÌå×èÁ¦¡£¾Ö²¿×èÁ¦Ö÷ÒªÓɹÜÄÚ¾¶±ä»¯¡¢¹Ü¶ÎÍäÇú¡¢¹ÜµÀÐÎ×´µÈÒòËØÒýÆð¡£×ÜÌå×èÁ¦ÔòÊǹܵÀÕûÌåµÄ×èÁ¦£¬Óɺ¸¹ÜµÄ³¤¶È¡¢´Ö²Ú¶È¡¢Á÷ÌåÁ÷¶¯ËٶȵÈÒòËØ¾ö¶¨¡£
ÔÚʵ¼Ê¹¤³ÌÖУ¬ÎÒÃÇͨ³£Ê¹ÓÃÀ×ŵÊý£¨Reynolds number£©À´·ÖÎöº¸¹ÜµÄÁ÷Ì嶯Á¦Ñ§ÌØÐÔ¡£À×ŵÊýÊÇÁ÷ÌåÁ¦Ñ§ÖеÄÒ»¸öÎÞÁ¿¸Ù²ÎÊý£¬ÓÃÀ´ÃèÊöÁ÷ÌåÔ˶¯µÄÌØÐÔ¡£ËüÓëÁ÷ÌåµÄÃܶȡ¢Õ³¶È¡¢ËÙ¶È¡¢¹ÜµÀÖ±¾¶¡¢º¸¹Ü±íÃæ´Ö²Ú¶ÈµÈÒòËØÏà¹Ø¡£
²»Ðâ¸Ö¹¤Òµº¸¹ÜµÄÁ÷Ì嶯Á¦Ñ§·ÖÎöÖ÷񻃾¼°µ½À×ŵÊýµÄ¼ÆËãºÍѹÁ¦ËðʧµÄ¹ÀËã¡£¼ÆËãÀ×ŵÊý¿ÉÒÔʹÓÃÏÂÃæµÄ¹«Ê½£ºRe = (¦ÑVD)/¦Ì
ÆäÖУ¬ReΪÀ×ŵÊý£¬¦ÑΪÁ÷ÌåµÄÃܶȣ¬VΪÁ÷ÌåµÄËÙ¶È£¬DΪº¸¹ÜµÄÖ±¾¶£¬¦ÌΪÁ÷ÌåµÄÕ³¶È¡£
À×ŵÊýµÄ´óС¿ÉÒÔÓÃÀ´ÅжÏÁ÷ÌåÔ˶¯µÄ״̬¡£µ±À×ŵÊýºÜС£¨Ð¡ÓÚ2100£©Ê±£¬Á÷ÌåÔ˶¯ÊDzãÁ÷µÄ£¬×èÁ¦½ÏµÍ¡£µ±À×ŵÊýºÜ´ó£¨´óÓÚ4000£©Ê±£¬Á÷ÌåÔ˶¯ÊÇÍÄÁ÷µÄ£¬×èÁ¦½Ï¸ß¡£ÔÚÁ½¸ö½×¶ÎÖ®¼ä£¬Á÷ÌåÔ˶¯¾ßÓйý¶É״̬¡£
¸ù¾ÝÀ×ŵÊý¿ÉÒÔ¼ÆË㺸¹ÜµÄĦ×èϵÊý¡£Ä¦×èϵÊýÊÇÃèÊöº¸¹Ü×èÁ¦´óСµÄ²ÎÊý£¬¿ÉÒÔͨ¹ýʹÓÃDarcy-Weisbach¹«Ê½À´¼ÆËã¡£¸Ã¹«Ê½ÈçÏ£º¦¤P = f(¦ÑV^2L)/(2D)
ÆäÖУ¬¦¤PΪº¸¹ÜµÄѹÁ¦Ëðʧ£¬fΪĦ×èϵÊý£¬LΪº¸¹ÜµÄ³¤¶È¡£
ͨ¹ýʵ¼Ê²âÁ¿ºÍ¼ÆË㣬¿ÉÒԵõ½º¸¹ÜµÄĦ×èϵÊý£¬´Ó¶ø¶Ôº¸¹ÜµÄ×èÁ¦ÌØÐÔÓÐÒ»¸öºÏÀíµÄ¹À¼Æ¡£Í¬Ê±»¹¿ÉÒÔͨ¹ý·ÖÎöº¸¹ÜµÄѹÁ¦ËðʧÀ´È·¶¨Á÷Ìå´«ÊäϵͳµÄÉè¼Æ²ÎÊý£¬ÈçÁ÷ËÙ¡¢¹Ü¾¶¡¢º¸¹ÜµÄ³¤¶ÈµÈ¡£
¡¾±¾ÎıêÇ©¡¿ ²»Ðâ¸Ö¹¤Òµ¹Ü ²»Ðâ¸Ö¹¤Òµ¹Ü³§¼Ò ²»Ðâ¸Ö¹¤Òµº¸¹ÜµÄ¹ÜÄÚÒºÌåÁ÷ËÙ¶¯Á¦¹«Ê½
¡¾ÔðÈα༡¿
¹«Ë¾Ãû³Æ£º¹ã¶«²»ÐàÇéÔµMG-Öйú¹Ù·½ÍøÕ¾Ð²ÄÁϼ¯ÍÅÓÐÏÞ¹«Ë¾
ÓÊÏ䣺info@sumwin.com
µØÖ·£º¹ã¶«Ê¡·ðɽÊиßÃ÷Çø¸ßÃ÷´óµÀÖжԴ¨¹¤ÒµÔ°È˾°Â·20ºÅ