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Çѱ¹¼öÀÚ¿øÇÐȸ / v.34, no.2, 2001³â, pp.187-195
TVD ¼öÄ¡¸ðÇüÀÇ °³¹ß: II. õ¼ö¹æÁ¤½Ä
( Development of TVD Numerical Models: II. Shallow-Water Equations )
ÀÌÁ¾¿í;Á¶¿ë½Ä; ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;ÇѾç´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â TVD±â¹ýÀ» ÀÌ¿ëÇÑ Ãµ¼ö¹æÁ¤½ÄÀÇ ¼öÄ¡¸ðÇüÀ» °³¹ßÇÏ¿´´Ù. º» ¸ðÇüÀº ½Ã°£°ú °ø°£¿¡¼­ 2Â÷ Á¤È®µµ¸¦ °¡Áö¸ç ºÒ¿¬¼Ó¸é¿¡¼­ ¼öÄ¡Áøµ¿À» ¾ïÁ¦ÇÒ ¼ö ÀÖ´Ù. dz»óÂ÷ºÐ±â¹ý¿¡ ±Ù°ÅÇÑ TVD±â¹ýÀº Riemann ÇØÀÇ °è»êÀÌ ¼ö¹ÝµÇ¾î¾ß Çϸç, ¿©±â¼­´Â HLLC±â¹ýÀÌ »ç¿ëµÇ¾ú´Ù. °³¹ßµÈ ¸ðÇüÀÇ Àû¿ë¼º°ú Á¤È®¼ºÀ» °ËÁõÇϱâ À§ÇØ ´Ü¼øÈ­µÈ Çϵµ¿¡¼­ ´ï ºØ±«ÆÄ¿Í Æ÷¹°Çü ¼öÁ¶¿¡¼­ÀÇ È帧ÀÇ ¿À¸£³»¸²À» ¸ðÀÇÇÏ¿´´Ù. ¼öÄ¡ÇØ´Â ÇØ¼®ÇØ¿Í Àß ÀÏÄ¡ÇÏ¿´´Ù.
In this study, a numerical model describing the shallow-water equations is newly developed by using a TVD scheme. The model has a second-order accuracy in time and space and is free from nonphysical oscillations, even in the vicinity of large gradients. Because a upwind based TVD scheme requires a Riemann solver, the HLLC scheme is employed in this model. To calibrate the applicability and accuracy, the developed model is used to simulate dam-break waves in an ideal channel and a sloshing flow n a paraboloidal basin. Agreements between numerical predictions and analytical solutions are very resonable.
 
Ű¿öµå
TVD scheme;Riemann solver;flux limiter;moving boundary;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.34, no.2, 2001³â, pp.187-195
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920731872)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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