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Çѱ¹¼öÀÚ¿øÇÐȸ / v.42, no.12, 2009³â, pp.1125-1133
3Â÷¿ø ÇÔ¸ô ÁöÇü¿¡¼­ ¼Ò¸êÆÄ ¼ººÐÀÇ ¿µÇâ
( Effects of evanescent modes on three-dimensional depression of seabed )
Á¤ÅÂÈ­;±èÇüÁØ;Á¶¿ë½Ä; Çѹç´ëÇб³ Åä¸ñ°øÇаú;ÇѾç´ëÇб³ °Ç¼³È¯°æ°øÇаú;ÇѾç´ëÇб³ °Ç¼³È¯°æ°øÇаú;
 
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ÆÄ¶ûÀÇ ¹®Á¦¿¡¼­ ÁøÇàÆÄ ¼ººÐ À̿ܿ¡ Laplace ¹æÁ¤½ÄÀÇ ¶Ç ´Ù¸¥ ÇØÀÎ ¼Ò¸êÆÄ ¼ººÐÀº ÁÖ·Î ¼ö½ÉÀÌ ±ÞÇÏ°Ô º¯È­ÇÒ ¶§ ÆÄ¶ûÀÇ º¯Çü¿¡ ¿µÇâÀ» ¹ÌÄ£´Ù. º» ¿¬±¸¿¡¼­´Â °íÀ¯ÇÔ¼öÀü°³¹ýÀ» »ç¿ëÇÏ¿© 3Â÷¿ø ÇÔ¸ô ÁöÇü¿¡¼­ ÆÄ¶ûÀÇ º¯Çü¿¡ ´ëÇÑ ¼Ò¸êÆÄ ¼ººÐÀÇ ¿µÇâÀ» °ËÅäÇÏ¿´´Ù. ¸ÕÀú, ±¸°£ÀÇ ¼ö¿Í ¼Ò¸êÆÄ ¼ººÐÀÇ ¼ö¿¡ º¯È­¸¦ Áָ鼭 ¼ö·Å¼º °Ë»ç¸¦ ÇÏ¿´À¸¸ç ´ÙÀ½À¸·Î ¼Ò¸êÆÄ ¼ººÐÀ» °í·ÁÇϸ鼭 3Â÷¿ø ÇÔ¸ôÁöÇü¿¡¼­ÀÇ ÆÄ¶ûº¯ÇüÀ» ¿¬±¸ÇÏ¿´´Ù.
Evanescent modes which are the other solutions of the Laplace equation for the linear dispersion equation may affect the wave transformation especially when a water depth varies abruptly. In this study, the effects of evanescent modes for a three-dimensional depression of seabed are investigated by using the eigenfunction expansion method. A convergence test is first carried out by changing numbers of domains and evanescent modes. The wave transformation for various depressions of seabed is then calculated under condition that the solution of the eigenfunction expansion method is converged.
 
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°íÀ¯ÇÔ¼öÀü°³¹ý;ÆÄ¶ûÀÇ º¯Çü;¼Ò¸êÆÄ ¼ººÐ;ÇÔ¸ô ÁöÇü;eigenfunction expansion method;wave transformation;evanescent mode;depression of seabed;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.42, no.12, 2009³â, pp.1125-1133
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200903538424653)
¾ð¾î : Çѱ¹¾î
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