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Çѱ¹¼öÀÚ¿øÇÐȸ / v.36, no.6, 2003³â, pp.937-947
¹ü¶÷ ¸ðÀǸ¦ À§ÇÑ À̵¿°æ°èÁ¶°Ç
( Moving boundary condition for simulation of inundation )
ÀÎÅÂÈÆ;À̺ÀÈñ;Á¶´ëÈñ;Á¶¿ë½Ä; ÇѾç´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;ÇѾç´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;ÇѾç´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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ÁöÁøÇØÀÏ ¶Ç´Â Á¶¼®°ú °°Àº ÆÄÀÇ °Åµ¿À» ¼öÄ¡¸ðÀÇÇÒ ¶§ ÇØ¾È¼±ÀÇ À§Ä¡´Â ÆÄ¶ûÀÇ ¿òÁ÷ÀÓ¿¡ µû¶ó ²÷ÀÓ¾øÀÌ À̵¿ÇÏ°Ô µÈ´Ù. µû¶ó¼­, À̸¦ ¼öÄ¡¸ðÇü¿¡ È¿°úÀûÀ¸·Î ¹Ý¿µÇϱâ À§Çؼ­´Â ¼öÄ¡¸ðÇüÀÇ °æ°è¼±À» ÆÄ¶ûÀÇ ¿òÁ÷ÀÓ¿¡ µû¶ó À̵¿½ÃÄÑ¾ß ÇÑ´Ù. º» ¿¬±¸¿¡¼­´Â °æ»çÁöÇüÀ» °è´ÜÁöÇüÀ¸·Î ´Ü¼øÈ­ÇÑ À̵¿°æ°èÁ¶°Ç¿¡ ´ëÇØ ÇØ¾È¼±ÀÇ À̵¿À» º¸´Ù Á¤È®È÷ ¸ðÀÇÇϱâ À§ÇÏ¿© õ¼ö¹æÁ¤½ÄÀÇ ºñ¼±ÇüÇ×À» 2Â÷ Á¤È®µµÀÇ Ç³»óÂ÷ºÐ±â¹ýÀ¸·Î Â÷ºÐÈ­ÇÏ¿© ÇØ¼®ÇÏ¿´´Ù. °³¹ßµÈ ¼öÄ¡¸ðÇüÀ» °ËÁõÇϱâ À§ÇÏ¿© ¹Ù´Ú¸¶ÂûÀÌ ¾ø´Â °ÍÀ¸·Î °¡Á¤µÈ Ÿ¿øÇü ¼öÁ¶¿¡¼­ÀÇ À¯Ã¼ÀÇ ÁÖ±âÀûÀÎ °Åµ¿À» ¼öÄ¡ÇØ¼®ÇÏ¿´À¸¸ç, ¿øÇü¼¶¿¡¼­ÀÇ Ã³¿À¸§³ôÀ̸¦ °è»êÇÏ¿© ¼ö¸®½ÇÇè°á°ú¿Í ºñ±³ÇÏ¿´´Ù. ¼öÄ¡ÇØ¼®ÀÇ °á°ú´Â ¼ö¸®½ÇÇè °á°ú¿Í ¾çÈ£ÇÏ°Ô ÀÏÄ¡ÇÏ¿´´Ù.
A shoreline, which has no the water depth, moves continuously as waves rise up and recede. Therefore, a special boundary treatment is required to track properly the movements of the shoreline in numerical modeling of the behavior of tsunamis or tides near a coastal zone. In this study, convective terms in nonlinear shallow-water equations are discretized explicitly by using a second-order upwind scheme to describe a moving shoreline more accurately. An oscillatory flow motion in a circular paraboloidal basin has been employed to validate the performance of the developed numerical model. Computed results of instantaneous free surface displacements are compared with those of analytical solutions and existing numerical solutions. The run-up heights in the vicinity of a circular island have also been calculated and obtained numerical results have been shown against available laboratory measurements. A good agreement has been observed.
 
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À̵¿°æ°èÁ¶°Ç;2Â÷ Á¤È®µµ dz»óÂ÷ºÐ¹ý;ºñ¼±Çü õ¼ö¹æÁ¤½Ä;ó¿À¸§;moving boundary condition;second-order upwing scheme;nonlinear shallow-water equations;run-up;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.36, no.6, 2003³â, pp.937-947
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200311922122502)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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