|
|
Çѱ¹¼öÀÚ¿øÇÐȸ / v.38, no.8, 2005³â, pp.691-698
|
Á¤Ã¼¼ö¿ªÀ¸·Î ¹æ·ùµÈ ¼öÆòº´ÇպηÂÁ¦Æ®ÀÇ Áøµ¿¿îµ¿¿¡ ´ëÇÑ ½ÇÇèÀû ¿¬±¸
( Experimental Investigation on the Flapping Motions of Horizontal Merging Buoyant Jet Discharged into Stationary Ambient Water ) |
·ù½Ã¿Ï;¼ÀÏ¿ø; â¿ø´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;¼¿ï´ëÇб³ °ø°ú´ëÇÐ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;
|
|
|
 |
|
|
ÃÊ ·Ï |
º» ¿¬±¸¿¡¼´Â Á¤Ã¼¼ö¿ªÀ¸·Î ¹æ·ùµÇ´Â ¼öÆòº´ÇպηÂÁ¦Æ®¿¡ ´ëÇÑ ½ÇÇèÀ» ¼öÇàÇÏ¿©, Æò¹ÎÁ¦Æ®ÀÇ °íÀ¯ÇÑ Æ¯Â¡À¸·Î¸¸ ¾Ë·ÁÁ® ¿Ô´ø Áøµ¿¿îµ¿¿¡ ´ëÇØ ±¸¸íÇϰíÀÚ ÇÏ¿´´Ù. ¿¬±¸°á°ú, Áøµ¿¿îµ¿Àº º´ÇպηÂÁ¦Æ®¿¡¼µµ È®ÀεǾúÀ¸¸ç, ƯÈ÷ º´ÇÕõÀÌ¿ª ½ÃÁ¡¿¡¼ºÎÅÍ °üÂûµÇ¾ú´Ù. È帧ÀÇ ±¹ºÎÀûÀΠƯ¼ºÄ¡¿Í Áøµ¿¿îµ¿À» ¾ß±âÇÏ´Â ¿ÍÀÇ Åë°úºóµµ¿ÍÀÇ °ü°è¸¦ ³ªÅ¸³»´Â Strouhal¼ö´Â º´ÇÕõÀÌ¿ª¿¡¼ º¯ÈÇÏ¿© º´ÇÕÀÌ ¿ÏÀüÈ÷ ÀÌ·ç¾îÁø ÈÄ¿¡´Â ÀÏÁ¤ÇÑ °ªÀ¸·Î ¼ö·ÅÇÏ´Â °ÍÀ¸·Î °üÃøµÇ¾ú´Ù. Æò¸éÁ¦Æ®¿¡ ´ëÇØ¼ ±¸ÇØÁø Áøµ¿¿îµ¿ÀÇ Æ¯¼ºÀÌ º´ÇÕõÀÌ¿ª°ú ±¹ºÎÈ帧Ư¼ºÄ¡ÀÇ º¯È¸¦ °í·ÁÇÒ °æ¿ì, º´ÇպηÂÁ¦Æ®ÀÇ Áøµ¿¿îµ¿µµ ³ªÅ¸³¾ ¼ö ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. |
|
A series of experiments has been performed to investigate the flapping motion, which has been generally considered as an intrinsic characteristic of plane flow, of the horizontal merging buoyant jet discharged into stationary ambient water. For Horizontal merging buoyant jets, the flapping motions has been observed and the average onsets of flapping motion coincided with the start of merging transition. The Strouhal number, which describes the measure of frequency of vortices on the flow boundary with respect to the local properties of the flow, varies and converges to a constant value over merging transition. Considering the merging transition and the variation of local flow properties, the characteristics of flapping motion of plane flow can be applied to merging buoyant jets. |
|
Ű¿öµå |
Áøµ¿¿îµ¿;¼öÆòº´ÇպηÂÁ¦Æ®;º´ÇÕõÀÌ¿ª;Strouhal¼ö;flapping motion;horizontal merging buoyant jet;merging transition;Strouhal number; |
|
|
|
 |
|
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.38, no.8, 2005³â, pp.691-698
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200531234557888)
¾ð¾î : Çѱ¹¾î |
|
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
|
|
|
|
|