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Çѱ¹¼öÀÚ¿øÇÐȸ / v.41, no.7, 2008³â, pp.653-667
LÇü ¼öÁ¦ÁÖº¯ È帧Ư¼º º¯È­¿¡ ´ëÇÑ ½ÇÇ迬±¸
( Experimental Study on Flow Characteristic of L-type Groyne )
°­Áر¸;¿©È«±¸;±è¼ºÁß; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ÇÏõ.ÇØ¾È¿¬±¸½Ç;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ÇÏõ.ÇØ¾È¿¬±¸½Ç;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ÇÏõ.ÇØ¾È¿¬±¸½Ç;
 
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º» ¿¬±¸´Â º¯Çü¼öÁ¦ Áß Çϳª·Î¼­ "¤¡" ¸ð¾çÀ» °®´Â LÇü ¼öÁ¦(L-type Groyne)¿¡ ´ëÇÑ ¼ö¸®½ÇÇè ¿¬±¸ÀÌ´Ù. ¿¬±¸ ¸ñÀûÀº ¼öÁ¦¼³°è¸¦ À§ÇÑ ±âÃÊÀÚ·áÀÎ ¼öÁ¦ÁÖº¯(¼ö·ÎºÎ, ¼öÁ¦¿ª)ÀÇ È帧Ư¼ºÀ» ÆÄ¾ÇÇÏ´Â °ÍÀÌ´Ù. À̸¦ À§ÇØ ¼ö¸®½ÇÇèÀ» ÅëÇÏ¿© ¼öÁ¦¼³°èÀÇ ÁÖ¿ä ¼ö¸®Æ¯¼ºÀÎ ÁÖ¼ö·ÎÀÇ À¯¼Óº¯È­, È帧Á߽ɼ±ÀÇ º¯È­ ¹× È帧ºÐ¸®¿µ¿ªÀ» ºÐ¼®ÇÏ¿´´Ù. º» ¿¬±¸¿¡¼­ È帧Á߽ɼ±Àº ¼ö·Î³»ÀÇ ÃÖ´ëÀ¯¼ÓÀÌ ¹ß»ýµÇ´Â À¯¼±À¸·Î Á¤ÀÇÇÏ¿´À¸¸ç È帧ºÐ¸®¿µ¿ªÀº º»·ù¿µ¿ªÀÎ ÁÖÈ帧°ú ¼öÁ¦¿µ¿ªÀÎ Àç¼øÈ¯¿µ¿ª(recirculation zone)ÀÇ °æ°è¸¦ ³ªÅ¸³½´Ù. 5°¡Áö ¼öÁ¦ ÆÈ±æÀÌ Á¶°Ç¿¡ ´ëÇÏ¿© À¯¼ÓÀ» º¯È­½ÃŰ¸é¼­ ¼ö¸®½ÇÇèÀ» ¼öÇàÇÏ¿´°í, LSPIV(Large Scale Particle Image Velocimetry)±â¹ýÀ» Àû¿ëÇÏ¿© ¼öÁ¦ÁÖº¯ È帧ÀåÀ» ÃøÁ¤ ¹× ºÐ¼®ÇÏ¿´´Ù. ½ÇÇè°á°ú ÁÖÈ帧ÀÇ À¯¼ÓÀº ÃÖ´ë 1.5¹è Áõ°¡µÇ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç ¼öÁ¦ ÆÈ±æÀÌÀÇ ¿µÇâÀº Àû¾ú´Ù. È帧Á߽ɼ±ÀÇ ÆøÀº ¼ö·ÎÆøÀÇ $55{sim}58%$ ±¸°£À¸·Î º¯È­µÇ¾úÀ¸¸ç È帧Á߽ɼ±°ú È帧ºÐ¸®¿µ¿ªÀº Froude ¼ö¿¡ Å« º¯È­¸¦ º¸ÀÌÁö ¾Ê´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
The hydraulic model test for the L-type Groynes with "¤¡" shape were conducted to analyze flow characteristics around these groynes. The results of model tests should be used for the fundamental information to design the L-type Groyne constructed in the field. Main hydraulic factors such as the velocity and thalweg line changes in main channel and separation area were analyzed in this study. The thalweg line is stream line where the maximum velocity occurs, and the separation area is a boundary of main flow and recirculation zone. Model tests with 5 different arm-lengths of the L-type Groynes were conducted changing the velocity. The LSPIV(Large Scale Particle Image Velocimetry) technique was used to measure and analyze the flow variation around the L-type Groynes. The velocity in main channel was increased 1.5 times and there was no effects of different groyne arm-length on the velocity changes. The width of thalweg lines $(T_{CL})$ was changed to $55{sim}58%$ of chanel width, and the Froude number did not affect on the thalweg line $(T_{CL})$ and separation line $(S_h)$ changes.
 
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LÇü ¼öÁ¦;È帧Á߽ɼ±;È帧ºÐ¸®¿µ¿ª;Àç¼øÈ¯¿µ¿ª;L-type Groyne;thalweg line;separation line;recirculation zone;LSPIV;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.41, no.7, 2008³â, pp.653-667
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200824550465055)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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