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Çѱ¹¼öÀÚ¿øÇÐȸ / v.37, no.10, 2004³â, pp.845-855
HLLC Approximate Riemann Solver¸¦ ÀÌ¿ëÇÑ Ãµ¼ö¹æÁ¤½Ä ÇØ¼®
( Analysis of Shallow-Water Equations with HLLC Approximate Riemann Solver )
±è´ëÈ«;Á¶¿ë½Ä; Çѱ¹¼öÀÚ¿ø°ø»ç ¼öÀÚ¿ø¿¬±¸¼Ò;ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ¼öÄ¡¸ðÇüÀ» ÀÌ¿ëÇÏ¿© ±ÙÇØÁöÁøÇØÀÏÀÇ Ã³¿À¸§ Çö»ó°ú ÀüÆÄ¾ç»óÀ» ÀÌ¿ëÇÏ¿© ÇØ¼®ÇÏ¿´´Ù. ¸ðÀÇ¿¡ »ç¿ëµÈ ¼öÄ¡¸ðÇüÀº ÁöÁøÇØÀÏ °Åµ¿ÀÇ ÇØ¼®¿¡ ÀûÇÕÇÑ ºñ¼±Çü õ¼ö¹æÁ¤½ÄÀ» Áö¹è¹æÁ¤½ÄÀ¸·Î äÅÃÇÏ¿´À¸¸ç, À¯ÇÑüÀû¹ýÀ» ÀÌ¿ëÇÏ¿© ÇØ¼®¿µ¿ªÀ» ÀÌ»êÈ­ ÇÏ¿´°í Riemann ¹®Á¦¸¦ ÇØ¼®Çϱâ À§ÇÏ¿© HLLC approximate Riemann solver¿Í Weighted Averaged Flux ±â¹ýÀ» ÀÌ¿ëÇÏ¿´´Ù. ¼öÄ¡¸ðÇüÀÇ °ËÁõÀ» À§ÇÏ¿© ¸¶Âû ¾ø´Â ¼öÁ¶¿¡¼­ÀÇ ¼ö¸éÁøµ¿¹®Á¦¿Í ¿øÇü¼¶ ÁÖÀ§¿¡¼­ °í¸³ÆÄÀÇ ÁøÇà°ú ó¿À¸§¿¡ ´ëÇÑ ¹®Á¦¿¡ Àû¿ëÇÏ¿© °¢°¢ ÇØ¼®ÇØ ¹× ½ÇÇè°á°ú¿Í ºñ±³ÇÏ¿´´Ù. ¼öÄ¡¸ðÇü¿¡ ÀÇÇÑ °á°ú´Â ÇØ¼®ÇØ¿Í ¼ö¸®¸ðÇü½ÇÇè °üÃøÀÚ·á¿Í Àß ÀÏÄ¡ÇÏ¿´´Ù.
The propagation and associated run-up process of nearshore tsunamis in the vicinity of shorelines have been analyzed by using a two-dimensional numerical model. The governing equations of the model are the nonlinear shallow-water equations. They are discretized explicitly by using a finite volume method and the numerical fluxes are reconstructed with a HLLC approximate Riemann solver and weighted averaged flux method. The model is applied to two problems; The first problem deals with water surface oscillations, while the second one simulates the propagation and subsequent run-up process of nearshore tsunamis. Predicted results have been compared to available analytical solutions and laboratory measurements. A very good agreement has been observed.
 
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.37, no.10, 2004³â, pp.845-855
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200411922948792)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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