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Çѱ¹¼öÀÚ¿øÇÐȸ / v.36, no.3, 2003³â, pp.365-374
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´ïºØ±« ¹®Á¦ÀÇ ÇØ¼®¿¡ °üÇÑ TVD-McCormack±â¹ýÀÇ Àû¿ë
( Application of TVD-McCormack Scheme to Analysis of Dam-Break Problems ) |
| ÀÌÁ¤±Ô;±èŰü; ÇѾç´ëÇб³ °ø°ú´ëÇÐ µµ½Ã°Ç¼³È¯°æ°øÇаú;ÇѾç´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
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| º» ¿¬±¸¿¡¼´Â 1Â÷¿ø ´ï ºØ±« ¹®Á¦ÀÇ °è»êÀ» À§ÇØ TVD-McCormack ±â¹ýÀ» »ç¿ëÇÏ¿´´Ù. TVD ±â¹ýÀº Áøµ¿À» °¨¼è ½Ãų »Ó ¾Æ´Ï¶ó ¼öÁ¤ÀÎÀÚ¸¦ °¡Áø Ç×À» Æ÷ÇÔÇÏÁö ¾Ê´Â´Ù. ´õ±¸³ª, TVD-McCormack ±â¹ýÀº sourceÇ×ÀÇ Ã³¸®¿¡ ÀÖ¾î ¾î·Á¿òÀ» ¹ß»ý½ÃŰÁö ¾ÊÀ¸¸ç ½Ã°£°ú °ø°£¿¡ ´ëÇØ 2Â÷ Á¤È®µµ¸¦ À¯ÁöÇÑ´Ù. Á¦ÇÑÀÚÀÇ Àû´çÇÑ Àû¿ë¿¡ ÀÇÇØ TVDÀÇ Æ¯¼ºÀ» ¹ßÀü½Ã۰í, ºÒ¿¬¼Ó±¸°£¿¡¼ÀÇ ¼öÄ¡ Áøµ¿À» ÁÙÀÏ ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ, º» ¼öÄ¡±â¹ý¿¡¼ ¿¹ÃøÀÚ(predictor)-º¸Á¤ÀÚ(corrector)´Ü°è°¡ Ãæ°ÝÆÄÀÇ ÀüÆÄ ¹æÇâ°ú °°À» ¶§ ´õ ÀÛÀº ¼öÄ¡¿ÀÂ÷¸¦ °®´Â´Ù´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. |
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| This is a study on application of a TVD-Mccormack scheme for the computation of one-dimensional dam-break flows. The TVD scheme not only has the ability to damp out oscillations, but also does not contain terms with adjustable parameters. Moreover, the TVD-McCormack scheme does not cause any additional difficulty when dealing with the source term of the equation and retains second-order accuracy in both space and time. In this study, by appropriately designing the limiter functions, the TVD property can be achieved, and numerical oscillations near a jump discontinuities can be eliminated or reduced. Also, this numerical scheme has less computational errors when the direction of the predictor-corrector step is in the same direction as the shock wane propagation. |
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| ´ïºØ±« È帧;TVD-McCormack ±â¹ý;Á¦ÇÑÀÚ ÇÔ¼ö;dam-break flows;TVD-McCormack scheme;limiter function; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.36, no.3, 2003³â, pp.365-374
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200302612607637)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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