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Çѱ¹¼öÀÚ¿øÇÐȸ / v.19, no.2, 1986³â, pp.131-138
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À¯°ø¹æÆÄÁ¦¿¡ ´ëÇÑ ¿¬±¸
( A Study on a Perforated Breakwater ) |
| ÀÌ¿ë±Ô;ÆíÁ¾±Ù;¾È¼öÇÑ; ¼¿ï´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú ´ëÇпø;¸íÁö´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú, ¼¿ï´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;;
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| ´ÜÀÏÀ¯°øº®ÀÇ ¼ö¸®ÇÐÀû Ư¼º ¹× µ¿·ÂÇÐÀû Ư¼º¿¡ ´ëÇØ¼ ÀÌ·Ð ¹× ½ÇÇèÀûÀ¸·Î ¿¬±¸ÇÏ¿´´Ù. ±¼±¸ÀÇ À̷нÄÀ» ÀÀ¿ëÇÏ¿© ¿¬±¸ÇÑ ¹Ù¿¡ ÀÇÇÏ¸é »ê¶õÆÄÇ×Àº ÆÄ·Â¿¡ °ÅÀÇ ¿µÇâÀ» ÁÖÁö ¸øÇÔÀ» ¾Ë ¼ö ÀÖ°í ½ÇÇè¿¡ ÀÇÇÑ ¿¬±¸¿¡ ÀÇÇϸé À¯°øÀ²ÀÇ º¯È¿¡ µû¸¥ ÆÄ·ÂÀÇ °Åµ¿Àº ¸Å¿ì ¹Î°¨ÇÑ °ÍÀ¸·Î ³ªÅ¸³µÁö¸¸ ±¸¸ÛÀÇ Áö¸§¿¡ ´ëÇÑ º®µÎ²²ÀÇ ºñ(l/D)´Â Á» ƯÀÌÇÑ Çö»óÀ» º¸ÀδÙ. l/DÀÇ °ªÀÌ ÀÛÀº ¹üÀ§¿¡¼´Â À¯°øº®ÀÇ ±¸¸ÛÀ» orifice¶ó°í ÇÒ ¼ö ÀÖÀ¸¹Ç·Î, ÆÄ·ÂÀÌ l/DÀÇ º¯È²¿¡ °ÅÀÇ ¿µÇâÀ» ¹ÞÁö ¾Ê°í, ÀÌ ¶§ÀÇ ¿¡³ÊÁö ¼Õ½Ç°è¼ö´Â ±¼±¸ÀÇ ½ÄÀ» ÀÌ¿ëÇϸé 1.0À¸·Î ³ªÅ¸³´Ù. ±×·¯³ª l/DÀÇ °ªÀÌ Å« ¹üÀ§¿¡¼´Â ±¸¸Û³»ÀÇ È帧À» °ü¼ö·ÎÀÇ È帧À̶ó°í º¼ ¼ö ÀÖÀ¸¹Ç·Î ÆÄ·ÂÀÌ l/D¿¡ ¹Î°¨Çϰí ÀÌ ¶§ÀÇ f´Â 1.5·Î ³ªÅ¸³µ´Ù. |
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| Both hydraulic and dynamic characteristics of a single perforated wall are studied theoretically and experimentally. Theoretically, the effect of evanescent modes on wave force acting on a single perated wall is studied by use of the Horiguchi theory. The wave force on the perforated wall is presented to be insensitive to evanescent modes. According to experimental study, The larger perforation ratio(${gamma}$) grows, the weaker the wave force on the wall becomes sensitively. And in the small value of l/D (ratio of wall thickness(l) to hole diameter(D)) where the holes on the wall are regarded as orifice, the wave force on the wall is insensitive to the variation of l/D. Energy loss coefficient f is estimated at 1.0 in this small value of l/D by use of Horiguchi theory. But in the large value of l/D where the holes are regarded as pipe, the wave force on the wall is relatively sensitive to the variation of l/D and f is estimated at 1.5 by use of Horiguchi theory. |
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.19, no.2, 1986³â, pp.131-138
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO198611920091567)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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