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Çѱ¹¼öÀÚ¿øÇÐȸ / v.35, no.1, 2002³â, pp.91-96
ºñ½ºµëÈ÷ ÀÔ»çÇÏ´Â ÆÄ¶ûÀÇ Bragg¹Ý»ç
( Bragg Reflection of Obliquely Incident Waves )
Á¶¿ë½Ä;¾È¿µÃ¢; ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;ÇѾç´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â °æ°è¿ä¼Ò¹ýÀ» ÀÌ¿ëÇÏ¿© ºñ½ºµëÈ÷ ÀÔ»çÇÏ´Â ÆÄ¶ûÀÇ ¹Ý»ç¿¡ ´ëÇÏ¿© ´Ù·ç¾úÀ¸¸ç, ºñ½ºµëÈ÷ ÀÔ»çÇÏ´Â ÆÄ¶ûÀÌ Á¤ÇöÆÄÇü ÁöÇüÀ» Åë°úÇÏ´Â °æ¿ì ±× ¶§ÀÇ ¹Ý»çÀ²°ú Bragg¹Ý»ç¿¡ ´ëÇÏ¿© Á¶»çÇÏ¿´´Ù. ƯÈ÷, ºñ½ºµëÈ÷ ÀÔ»çÇÏ´Â ÆÄ¶ûÀÇ Bragg¹Ý»ç¸¦ ¹ß»ý½ÃŰ´Â ÆÄ¼ö¸¦ °è»êÇÏ¿© ÀÌ·ÐÀûÀÎ °á°ú¿Í ºñ±³ÇÏ¿´´Ù. ÇØ¼®°á°úÀÇ °ËÁõÀ» À§ÇÏ¿© °íÀ¯ ÇÔ¼öÀü°³¹ý¿¡ ÀÇÇÑ Á¤ÇöÆÄÇü ÁöÇüÀÇ ¹Ý»çÀ²°ú º» ¸ðÇüÀÇ °á°ú¸¦ ºñ±³ÇÏ¿´À¸¸ç, ÀüüÀûÀ¸·Î º» ¿¬±¸ÀÇ °á°ú´Â ±âÁ¸ÀÇ ¿¬±¸°á°úµé°ú ºñ±³Àû ¾çÈ£ÇÏ°Ô ÀÏÄ¡ÇÏ¿´´Ù.
The present research describes the Bragg reflection of obliquely incident waves propagating over sinusoidally varying topographies. A numerical model based on the boundary element method is employed. Wave numbers providing Bragg reflection are calculated and compared to theoretical predictions. The reflection coefficients obtained from this model are also compared with those of the eigenfunction expansion method. A very good agreement is observed.
 
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ÆÄ¶û;°æ°è¿ä¼Ò¹ý;Bragg ¹Ý»ç;Á¤ÇöÆÄÇüÁöÇü;°íÀ¯ÇÔ¼öÀü°³¹ý;wave;boundary element method;Bragg reflection;sinusoidally varying topography;eigenfunction expansion method;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.35, no.1, 2002³â, pp.91-96
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200211920932826)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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