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Çѱ¹¼öÀÚ¿øÇÐȸ / v.33, no.6, 2000³â, pp.805-814
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2Â÷¿ø °æ°è¿ä¼Ò¹ýÀ» ÀÌ¿ëÇÑ Bragg¹Ý»ç ÇØ¼®
( Analysis of Bragg Reflection using Two-Dimensional Boundary Element Method ) |
| ±è¿µÅÃ;Á¶¿ë½Ä;ÀÌÁ¤±Ô; ÇѾç´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;ÇѾç´ëÇб³ µµ½Ãȯ°æ°Ç¼³°øÇаú±º;ÇѾç´ëÇб³ µµ½Ãȯ°æ°Ç¼³°øÇаú±º;
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| º» ¿¬±¸¿¡¼´Â °æ°è¿ä¼Ò¹ýÀ» ÀÌ¿ëÇÏ¿© ¼ö½ÉÀÌ º¯ÇÏ´Â ÁöÇüÀ» Åë°úÇÒ ¶§ ¹ß»ýÇÏ´Â ÆÄ¶ûÀÇ È¸ÀýÀ» ¼öÄ¡ÇØ¼®ÇÏ¿´´Ù. ¸ÕÀú, Æ®·»Ä¡ÁöÇüÀ» Åë°úÇÏ´Â ÆÄ¶ûÀÇ ¹Ý»çÀ²°ú Åë°úÀ²À» °è»êÇÏ¿´À¸¸ç °íÀ¯ÇÔ¼öÀü°³¹ý¿¡ ÀÇÇÑ °á°ú¿Í ºñ±³ÇÏ¿© º» ¸ðÇüÀ» °ËÁõÇÏ¿´´Ù. ¾Æ¿ï·¯, °æ°è¿ä¼Ò¹ýÀ» Á¤ÇöÆÄÇü ÁöÇü¿¡ Àû¿ëÇÏ¿© ¹Ý»çÀ² ¹× Bragg ¹Ý»ç¸¦ ¿¬±¸ÇÏ¿´´Ù. ¼öÄ¡ÇØ¼®¿¡ ÀÇÇÑ ¹Ý»çÀ²Àº ¼ö¸®¸ðÇü½ÇÇè¿¡ ÀÇÇÑ °üÃø°á°ú ¹× °íÀ¯ÇÔ¼öÀü°³¹ý¿¡ ÀÇÇÑ °á°ú¿Í ºñ±³ÇÏ¿´´Ù. ÀüüÀûÀ¸·Î º» ¿¬±¸ÀÇ °á°ú´Â ±âÁ¸ÀÇ ÀÚ·á¿Í Àß ÀÏÄ¡ÇÏ¿´´Ù. |
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| A numerical model based on the boundary element method is employed to describe diffraction of monochromatic water waves due to varying topographies. The model is firstly verified by comparing obtained reflection and transmission coefficients of waves over a trench to those of the eigenfunction expansion method. The model is then used to investigate the Bragg reflection of waves over sinusoidally varying topographies. Calculated reflection coefficients are compared to available laboratory measurements and semi-theoretical results. A reasonably good agreement is observed.served. |
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| °æ°è¿ä¼Ò¹ý;Bragg ¹Ý»ç;°íÀ¯ÇÔ¼öÀü°³¹ý;Á¤ÇöÆÄÇüÁöÇü;boundary element method;Bragg reflection;eigenfunction expansion method;sinusoidally varying topographies; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.33, no.6, 2000³â, pp.805-814
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011920730482)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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