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Çѱ¹¼öÀÚ¿øÇÐȸ / v.38, no.9, 2005³â, pp.727-736
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»ó·ùÀ̼ÛÇü McCormack ±â¹ýÀÇ °³¹ß
( Development of the Upwind McCormack Scheme ) |
±è¿ø;ÇѰǿ¬; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ¼öÀÚ¿ø¿¬±¸ºÎ;°æºÏ´ëÇб³ Åä¸ñ°øÇаú;
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º» ¿¬±¸¿¡¼´Â McCormack ±â¹ýÀÇ 2Â÷ Á¤È®µµ ¹× ´Ü¼ø¼ºÀÇ ÀåÁ¡°ú ºÒ¿¬¼Ó È帧À» ÇØ¼®ÇÒ ¼ö ÀÖ´Â »ó·ùÀ̼۱â¹ýÀÇ ÀåÁ¡À» °áÇÕÇÏ¿© »ó·ùÀ̼ÛÇü McCormack ±â¹ýÀ» »õ·ÎÀÌ °³¹ßÇÏ¿´´Ù. ÀÌ ±â¹ýÀº »ý¼ºÇ×À» È¿°úÀûÀ¸·Î ó¸®ÇÒ ¼ö ÀÖ´Â ÀåÁ¡µµ Áö´Ï°í ÀÖ´Ù. º» ¿¬±¸¿¡¼ °³¹ßµÈ ±â¹ýÀ» ÇØ¼®Çظ¦ °¡Áø °¡»óÀûÀÎ Çϵµ¿¡ Àû¿ëÇÑ °á°ú ±âÁ¸ McCormack ±â¹ý¿¡¼ ¹ß»ýÇÏ´ø ¼öÄ¡Áøµ¿¾øÀÌ ÇØ¼®Çظ¦ Àß ÀçÇöÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ¶ÇÇÑ ½ÇÁ¦ ÇÏõ¿¡ ´ëÇÑ Àû¿ëÀ» À§ÇØ ÇÏ»ó°ú ÇÏÆøÀÇ º¯È°¡ ¸Å¿ì ½ÉÇÑ ÇѰ ÇÏ·ù±¸°£¿¡ Àû¿ëÇÑ °á°ú ±âÁ¸ McCormack ±â¹ýÀÌ ÇØ¼®ÇÒ ¼ö ¾ø´Â Á¤»ó·ù³ª ºÎÁ¤·ù¸¦ ¸ðµÎ Àß ÇØ¼®ÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. º» ¿¬±¸¿¡¼ °³¹ßÇÑ »ó·ùÀ̼ÛÇü McCormack ±â¹ýÀº º¹ÀâÇÑ ÀÚ¿¬ÇϵµÀÇ Èå¸§ÇØ¼®À» À§ÇØ È¿°úÀûÀ¸·Î »ç¿ëµÉ ¼ö ÀÖÀ» °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù. |
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In this study, the upwind McCormack scheme is introduced to combine the advantage of McCormack scheme, the second order accuracy and simplicity, and the advantage of the upwind scheme, to be applied to the discontinuous flows. This scheme also has another advantage of treating the source terms effectively. This model is approved through applying to the discontinuous flow case with the analytical solution, and the natural river with very strong source terms. Applications of the upwind McCormack scheme developed in this paper show good agreements with the analytical solution without numerical oscillation in existing McCormack scheme. Futhermore, applications to the natural river, the lower Han river with strong variation of bed and width, also show good results in case of both steady flow and unsteady flow. The upwind McCormack scheme in this study will be used for the analysis of flow in natural rivers effectively. |
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Ű¿öµå |
»ó·ùÀ̼Û;McCormack ±â¹ý;ºÒ¿¬¼Ó È帧;upwind;McCormack;discontinuous flow; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.38, no.9, 2005³â, pp.727-736
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200531234563857)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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