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Çѱ¹¼öÀÚ¿øÇÐȸ / v.44, no.3, 2011³â, pp.249-262
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2Â÷¿ø À¯ÇÑüÀû¸ðÇüÀ» ÀÌ¿ëÇÑ ´ï ºØ±«ÆÄ ¸ðÀÇ¿¡ °üÇÑ ¿¬±¸
( A Study on Simulation of Dam-break Wave Using Two-dimensional Finite Volume Model ) |
| Á¤¿ìâ;¹Ú¿µÁø; °æ³²´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;¼ÀÏ´ëÇÐ Åä¸ñ°øÇаú;
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| º» ¿¬±¸¿¡¼´Â ´ï ºØ±«ÆÄ¿Í °°ÀÌ ¿¬¼Ó ¹× ºÒ¿¬¼Ó Èå¸§ÇØ¼®¿¡ Àû¿ëµÇ°í ÀÖ´Â HLLC ±â¹ýÀ» ºÒ±ÔÄ¢ÇÑ ÇÏ»óÁöÇü¿¡¼ÀÇ Èå¸§ÇØ¼®¿¡ Àû¿ëÇÒ ¶§ »ý¼ºÇ×°ú È帧·üÇ×ÀÇ »çÀÌÀÇ ¼öÄ¡Àû ºÒ±ÕÇüÀ¸·Î ÀÎÇÑ ¼öÄ¡Áøµ¿À» °¨¼Ò½Ã۱â À§ÇØ well-balanced HLLC ±â¹ý°ú õ¼ö¹æÁ¤½Ä¿¡ ±Ù°ÅÇÑ ºñ±¸Á¶Àû À¯ÇÑüÀû¸ðÇüÀ» °³¹ßÇÏ¿´À¸¸ç, À̸¦ ´ï ºØ±«ÆÄ ¹®Á¦¿¡ Àû¿ëÇÏ¿´´Ù. Àû¿ëµÈ well-balanced HLLC ±â¹ýÀº ´Ü¼øÈ÷ È帧·üÇ×À» °è»êÇÒ ¶§ ÇÏ»óÁöÇü°æ»ç¸¦ Á÷Á¢ Æ÷ÇÔ½ÃŰ´Â °ÍÀ¸·Î Á¤»ó»óÅÂÀÇ ÃµÀÌ·ù¿¡ Àû¿ëÇÏ¿´À» ¶§ »ý¼ºÇ×°ú È帧·üÇ× »çÀÌ¿¡ ¼öÄ¡Àû ±ÕÇüÀÌ ÀÌ·ç¾îÁüÀ» È®ÀÎÇÏ¿´´Ù. ¼öÄ¡¸ðÇüÀÇ °ËÁõÀ» À§ÇØ ´ï ºØ±«ÆÄ ¹®Á¦¿Í °ü·ÃµÈ ¼¼ °¡Áö ¼·Î ´Ù¸¥ ¼ö¸®¸ðÇü½ÇÇè°ú ÇÁ¶û½º Mapasset ´ï ºØ±«¿¡ ´ëÇÑ ÇöÀå»ç·Ê¿¡ Àû¿ëÇÏ¿´À¸¸ç, Àû¿ë°á°ú º» ¿¬±¸¿¡¼ °³¹ßµÈ ¸ðÇüÀº ¼ö¸®¸ðÇü½ÇÇè ±×¸®°í ÇöÀå¿¡¼ °üÃøµÈ °á°ú¿Í ºñ±³Àû Àß ÀÏÄ¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µÀ¸¸ç, ±âÁ¸ÀÇ ¸ðÇüÀ¸·ÎºÎÅÍ °è»êµÈ ¸ðÀǰá°ú¿¡ ºñÇØ ºñ±³Àû Á¤È®ÇÑ °á°ú¸¦ ³ªÅ¸³»¾ú´Ù. |
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| In this study, in order to reduce the numerical oscillation due to the unbalance between source and flux terms as the HLLC scheme is applied to the flow analysis on the irregular bed topography, a unstructured finite volume model based on the well-balanced HLLC scheme and the shallow water equations is developed and applied to problems of dam-break waves. The well-balanced HLLC scheme considers directly the gradient of bed topography as the flux terms is calculated. This scheme provides the good numerical balance between the source and flux terms in the case of the application to the steady-state transcritical flow. To verify the numerical model developed in this study, it is applied to three cases of hydraulic model experiments and a field case study of Mapasset dam failure (France). As a result of the verification, the predicted numerical results agree relatively well with available laboratory and field measurements. The model provides slightly more accurate results compared with the existing models. |
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| Ű¿öµå |
| õ¼ö¹æÁ¤½Ä;ºñ±¸Á¶Àû À¯ÇÑüÀû¸ðÇü;well-balanced HLLC ±â¹ý;´ï ºØ±«ÆÄ;shallow water equation;unstructured finite volume model;well-balanced HLLC scheme;dam-break wave; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.44, no.3, 2011³â, pp.249-262
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201115952331166)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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