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Çѱ¹¼öÀÚ¿øÇÐȸ / v.31, no.3, 1998³â, pp.223-234
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»ç¼®ÀáÁ¦¿Í Stokes 3Â÷ÆÄ¿ÍÀÇ ºñ¼±Çü°£¼·¿¡ °üÇÑ ¿¬±¸
( Nonlinear Interaction between the Permeable Submerged Breakwater and Third Order Stokes Waves ) |
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| ÆÄ¶ûÁ¦¾î ¹× Ç¥»çÁ¦¾î¶ó°í ÇÏ´Â ÇØ¾È¡¤Ç׸¸±¸Á¶¹°ÀÇ ¿ø·¡ÀÇ ±â´É À̿ܿ¡ ÇØ¾ç¡¤ÇؾÈȯ°æÀÇ À¯Áö¡¤°³¼±ÀÇ ±â´É±îÁöµµ °®Ãá Åõ°ú¼ºÀáÁ¦¿¡ ÀÇÇÑ ºñ¼±ÇüÆÄ¶ûº¯ÇüÀ» ÇØ¼®ÇÏ¿´´Ù. ÇØ¼®¹ýÀ¸·Î¼ Stokes 3Â÷ÆÄ¿¡ ±âÃÊÇÑ ¼·µ¿Àü°³¹ý°ú °æ°è¿ä¼Ò¹ýÀ» º´¿ëÇÏ´Â Á֯ļö¿µ¿ªÇؼ®¹ýÀ» óÀ½À¸·Î Åõ°ú¼ºÀáÁ¦ÀÇ ÆÄ¶ûº¯Çü¿¡ Àû¿ëÇÏ¿´´Ù. Åõ°úÃþ³»ÀÇ À¯Ã¼¿îµ¿ÀÇ ÀúÇ׿¡´Â Dupuit-ForchheimerÀÇ ÀúÇ×½ÄÀ» Àû¿ëÇϸç, LorentzÀÇ µî°¡ÀÏ¿ø¸®¿¡ ±âÃÊÇÏ¿© ¾ò¾îÁö´Â µî°¡¼±Çü¸¶Âû°è¼öÀÇ »êÁ¤½ÄÀ» °ø°£ÀûºÐ¸¸ÀÇ ÇüÅ·Π³ªÅ¸³»¾ú´Ù. º» ÀÌ·ÐÀÇ °ËÁõÀ» À§ÇÏ¿© ¼ö¸®¸ðÇü½ÇÇèÀ» ½Ç½ÃÇÏ¿´À¸¸ç, ¾ò¾îÁø ¼ö¸®¸ðÇü½ÇÇè°á°ú´Â ¼öÄ¡ÇØ¼®°á°ú¿Í Àß ÀÏÄ¡ÇϹǷΠ±×ÀÇ Å¸´ç¼ºÀÌ °ËÁõµÇ¾ú°í, º» ÇØ¼®°á°ú°¡ Stokes 2Â÷ÆÄ¿¡ ±âÃÊÇÑ °á°úº¸´Ùµµ ´õ Á¤È®¼ºÀ» °¡Áø´Ù´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. Çٽɿë¾î : Stokes 3Â÷ÆÄ, Á֯ļö¿µ¿ªÇؼ®¹ý, Åõ°ú¼ºÀáÁ¦, ºñ¼±ÇüÆÄ¶ûº¯Çü, µî°¡¸¶Âû°è¼ö |
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| Recently, the interests of the construction of the permeable submerged breakwaters have been increased to preserve and to improve the coastal environment, and to control the incident waves and littoral transport. It is very important to predict the wave transformation precisely over the permeable submerged breakwaters. This study discusses nonlinear wave transformation and characteristics by using BEM based on the frequency domain method of the 3rd-order Stokes waves. The Dupuit-Forchheimer formula is applied to the analysis of the fluid resistance of rubble stones, and the equation about equivalent linear frictional coefficient is newly modified based on the Lorentz's condition for the equivalent work. The numerical results are compared with the experimental ones for verification. These two results give a close agreement each other. It is confirmed that the present method of the 3rd-order Stokes waves estimates more precisely than that of the 2nd-order Stokes waves. Keywords : third-order Stokes waves, frequency domain method, permeable submerged breakwater, nonlinear wave transformation, equivalent linear frictional coefficient |
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| Ű¿öµå |
| Stokes 3Â÷ÆÄ;Á֯ļö¿µ¿ªÇؼ®¹ý;Åõ°ú¼ºÀáÁ¦;ºñ¼±ÇüÆÄ¶ûº¯Çü;µî°¡¸¶Âû°è¼ö;third-order Stokes waves;frequency domain method;permeable submerged breakwater;nonlinear wave transformation;equivalent linear frictional coefficient; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.31, no.3, 1998³â, pp.223-234
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811920100929)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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