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Çѱ¹¼öÀÚ¿øÇÐȸ / v.42, no.9, 2009³â, pp.715-724
°æ»ç¼öÁ¦ ÁÖº¯ È帧Ư¼º ºÐ¼®¿¡ °üÇÑ ½ÇÇ迬±¸
( An Experimental Study on Flow Characteristic Around Inclined Crest Groyne )
°­Áر¸;±è¼ºÁß;¿©È«±¸; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ÇÏõ.ÇØ¾ÈÇ׸¸¿¬±¸½Ç;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ÇÏõ.ÇØ¾ÈÇ׸¸¿¬±¸½Ç;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ÇÏõ.ÇØ¾ÈÇ׸¸¿¬±¸½Ç;
 
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°æ»ç¼öÁ¦´Â ¼öÀ§¿¡ µû¶ó È帧Ãà¼ÒÀÇ Á¤µµ°¡ ´Þ¶óÁö±â ¶§¹®¿¡ ÆøÀÌ Á¼Àº ¼ö·Î³ª ¼öÁ¦¼³Ä¡·Î ÀÎÇØ ¹ß»ýÇÏ´Â ¼öÀ§»ó½ÂÀ¸·Î ¿ù·ùÀÇ À§Ç輺ÀÌ ÀÖ´Â ÁöÁ¡¿¡ Àû¿ëÇϱ⿡ ÀûÇÕÇÏ´Ù. º» ¿¬±¸´Â ¼öÁ¦ ¼±´ÜºÎ°¡ °æ»ç¸¦ ÀÌ·ç´Â °æ»ç¼öÁ¦¿¡ ´ëÇÑ ¼ö¸®½ÇÇèÀ» ¼öÇàÇÏ¿´´Ù. °æ»ç¼öÁ¦ ½ÇÇèÀÇ ÁÖ¿ä ÀÎÀÚ´Â ¼öÁ¦ÀÇ ¼±´ÜºÎ °¢µµ¿Í ¼ö½Éº¯È­À̸ç À̵é ÁÖ¿äÀÎÀÚ¿¡ ÀÇÇÑ ¼öÁ¦ÁÖº¯ÀÇ À¯¼ÓÀ» LSPIV (Large Scale Particle Image Velocimetry)±â¹ýÀ» ÀÌ¿ëÇÏ¿© ÃøÁ¤ÇÏ¿´´Ù. ¼öÁ¦ÁÖº¯ È帧¿µ¿ªÀº ÁÖÈ帧¿µ¿ª°ú Àç¼øÈ¯¿µ¿ªÀ¸·Î ±¸ºÐÇÏ¿© ºÐ¼®ÇÏ¿´´Ù. ½ÇÇè°á°ú, È帧Á߽ɼ± º¯È­´Â ȯ»ê±æÀÌ¿¡ ¿µÇâÀÌ Å©Áö ¾Ê¾ÒÀ¸³ª Àç¼øÈ¯¿µ¿ª ÆøÀº ȯ»ê±æÀ̰¡ Ŭ¼ö·Ï Áõ°¡ÇÏ¿´´Ù. Àç¼øÈ¯¿µ¿ªÀÇ ±æÀ̴ ȯ»ê¼öÁ¦±æÀÌÀÇ ¾à 12 $sim$ 16¹è Á¤µµ ¹ß»ýÇÏ¿´´Ù. ÁÖÈ帧¿µ¿ª¿¡¼­ÀÇ ÃÖ´ëÀ¯¼ÓÀº »ó·ùÁ¢±ÙÀ¯¼Ó¿¡ 1.45 $sim$ 2.1¹è ³»¿Ü·Î ¼öÁ¦°æ»ç¿¡ ÀÇÇÑ ¿µÇâÀº Å©Áö ¾Ê¾Ò´Ù. Àç¼øÈ¯¿µ¿ªÀÇ ¿ª·ù¼ÓÀº È®¿¬È÷ °¨¼ÒÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³ª Á¦¹æºÎ È£¾È¿¡ ¾ÈÁ¤µÈ È帧ÀÌ Çü¼ºµÇ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
In case of inclined crest groyne, flow constriction with water is different. Therefore, it is proper to apply to narrow channel or there is a risk of overflow with water level rising caused by installation of groynes. This study were conducted experiments on inclined crest groyne. Main factors of inclined crest groyne are angles of crests slope and changes of water level. Velocity profile around groyne was measured by LSPIV (Large Scale Particle Image Velocimetry). Flow fields around groyne were analyzed focused on main channel and recirculation area. From the results, Thalweg change has little an effect on rate length and height of recirculation rises on increasing rate length. Length of recirculation area was about 12$sim$16 times of rate length of groyne. Maximum velocity in main channel area was measured about 1.45$sim$2.1 times of approach velocity and has little an effect on crest angle of groyne. Back water velocity recirculation area was decreased on approach velocity. This result presents to make stable flow to bank protection.
 
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°æ»ç¼öÁ¦;¼öÁ¦°¢µµ;È帧Á߽ɼ±;Àç¼øÈ¯¿µ¿ª;inclined crest groyne;crest angle;thalweg;recirculation area;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.42, no.9, 2009³â, pp.715-724
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200927941501031)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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