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Çѱ¹¼öÀÚ¿øÇÐȸ / v.39, no.12, 2006³â, pp.1023-1030
±Þº¯¸¸°îºÎ¿¡¼­ Á¾¹æÇâ À¯¼ÓÀÇ ¿¬Á÷ºÐÆ÷
( The Vertical Distribution of Longitudinal Velocity in Sharp Open Channel Bends )
À̱漺;±èÅ¿ø;¹ÚÀçÇö; ¼­¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;¼­¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;ÀÎÁ¦´ëÇб³ Åä¸ñ°øÇаú;
 
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Á¾¹æÇâ À¯¼ÓÀÇ Æ¯¼ºÀ» ÆÄ¾ÇÇϱâ À§Çؼ­ Á߽ɰ¢ÀÌ $180^{circ}$ÀÎ ¼øÈ¯¼ö·Î¿¡¼­ ½ÇÇèÀ» ¼öÇàÇÏ¿´À¸¸ç, 3Â÷¿ø À¯¼ÓÀå ÃøÁ¤Àº Ãø¹æ À½ÆÄ µµÇ÷¯ À¯¼Ó°è¸¦ ÀÌ¿ëÇÏ¿´´Ù. ±âÁ¸ÀÇ Á¾¹æÇâ À¯¼Ó½ÄµéÀÇ ´ÜÁ¡µéÀ» °ËÅäÇÏ¿´´Ù. Á¾¹æÇ⠿ ¹æÁ¤½Ä¿¡ ¿ÍÁ¡¼º °³³äÀ» µµÀÔÇÏ¿© »õ·Î¿î Á¾¹æÇâ À¯¼ÓÀÇ ¿¬Á÷ºÐÆ÷ ½ÄÀ» °³¹ßÇÏ¿´´Ù. Á¾¹æÇâ À¯¼ÓÀÇ ¿¬Á÷ºÐÆ÷µéÀ» ºñ±³ÇÑ °á°ú Àß ÀÏÄ¡ÇÔÀ» º¸¿©ÁÖ°í ÀÖÀ¸¸ç, °î¼±¼ö·Î¿¡¼­ °î·üÀÇ º¯È­´Â Á¾¹æÇâ À¯¼ÓÀÇ ¿¬Á÷ºÐÆ÷ º¯È­ ¹× ÃÖ´ë À¯¼Ó ¹ß»ý ÁöÁ¡¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â °ÍÀ» ¹ß°ßÇÏ¿´´Ù.
The characteristics of the longitudinal velocity in a $180^{circ}$ constant-radius, recirculating laboratory channel were investigated. Three-dimensional velocity fields were measured using a side-looking ADV. The shortcomings of existing equations for longitudinal velocity are discussed. An eddy viscosity model is adopted in the downstream momentum equation. A mathematical equation was developed to describe the vertical distribution of longitudinal velocity. The comparisons of the longitudinal velocity show generally good agreement. It is found that the curvature change in the curved channel affects the vertical location of maximum velocity and the vertical profile of longitudinal velocity.
 
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Á¾¹æÇâ À¯¼ÓÀÇ ¿¬Á÷ºÐÆ÷;ÃÖ´ëÀ¯¼Ó;±Þº¯¸¸°îºÎ;vertical distribution of longitudinal velocity;maximum velocity;sharp open channel bends;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.39, no.12, 2006³â, pp.1023-1030
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200606141782335)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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