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Çѱ¹¼öÀÚ¿øÇÐȸ / v.34, no.1, 2001³â, pp.45-55
°íÁ¤È®µµ ¼öÄ¡±â¹ýÀ» ÀÌ¿ëÇÑ ÇÏõ õÀÌ·ù ÇØ¼® I. : ¸ðÇü °³¹ß
( Numerical anslysis of Transcritical Flow in Open Channels Using High-Resolution scheme I. : Model Development )
±è¿ø;ÇѰǿ¬; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ¼öÀÚ¿øÈ¯°æ¿¬±¸ºÎ;°æºÏ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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õÀÌ·ù´Â ÇϳªÀÇ °è»ê ¿µ¿ª³»¿¡¼­ »ç·ù¿Í »ó·ù°¡ µ¿½Ã¿¡ ¹ß»ýÇÏ´Â È帧À» ÀǹÌÇÏ´Â ¿ë¾îÀÌ´Ù. õÀÌ·ù ÇØ¼® ¸ðÇü °³¹ß¿¡¼­ Áß¿äÇÑ »çÇ×Àº »ó·ù¿Í »ç·ù ¿µ¿ª¿¡¼­ ¹ß»ýÇÏ´Â ½ÅÈ£ÀÇ ÀüÆÄƯ¼ºÀ» Á¤È®ÇÏ°Ô ¹Ý¿µÇÒ ¼ö ÀÖ¾î¾ß ÇÑ´Ù´Â °Í°ú º¸Á¸¼ºÀ» À¯ÁöÇØ¾ß ÇÑ´Ù´Â °ÍÀÌ´Ù. º» ¿¬±¸¿¡¼­´Â Áö±Ý±îÁö ÇÏõ õÀÌ·ù ÇØ¼®À» À§ÇØ Àû¿ëµÈ ÀûÀÌ ¾ø´Â À½ÇØÀû ENO ±â¹ýÀ» ÀÌ¿ëÇÏ¿© »õ·Î¿î ¸ðÇüÀ» °³¹ßÇÏ¿´´Ù. À½ÇØÀû ENO ±â¹ýÀº Àü ±¸°£¿¡ °ÉÃÄ ¼öÄ¡Áøµ¿¾øÀÌ °íÁ¤È®µµ°¡ À¯ÁöµÉ ¼ö ÀÖ´Â ÀåÁ¡À» Áö´Ñ ¼öÄ¡±â¹ýÀÎ ENO ±â¹ý°ú ¼öÄ¡ÀûÀ¸·Î ¹«Á¶°ÇÀû ¾ÈÁ¤¼ºÀÌ º¸ÀåµÇ´Â ÀåÁ¡À» Áö´Ñ À½ÇعýÀ» °áÇÕÇÑ ±â¹ýÀÌ´Ù. º» ¿¬±¸¿¡¼­ °³¹ßÇÑ ¸ðÇüÀ» °¡»óÀûÀÎ ´ïºØ±«ÆÄÀÇ ÇØ¼®¿¡ Àû¿ëÇÑ °á°ú ¸Å¿ì °­ÇÑ ÃµÀÌ·ù°¡ ¹ß»ýÇÏ´Â °æ¿ì¿¡µµ ¾ÈÁ¤ÀûÀ¸·Î Á¤È®ÇÑ ÇØ¸¦ ±¸ÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
Transcritical flow is a term intended to denote the existence of both supercritical and subcritical flows within a computational domain. The major problems that need to be addressed while modeling transcritical flows include handling the differing features of signal propagation in subcritical and supercritical flow regions and maintaining conservation. The present study proposes the implicit ENO method as a high-resolution scheme for transcritical flow. This implicit ENO scheme is based on the ENO method, a new class of uniformly high-order-accurate essentially non-oscillatory implicit scheme, which has the advantage of unconditional stability. The implicit ENO scheme has not been used for the transcritical flow in open channel until now. As a result of application to the hypothetical dam-break flow, the implicit ENO scheme was ploved to produce accurate results with good robustness even though in the case of verb strong shock wave.
 
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ÇÏõ;õÀÌ·ù;À½ÇØÇü ENO ±â¹ý;°íÁ¤È®µµ ¼öÄ¡±â¹ý;´ïºØ±«ÆÄ;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.34, no.1, 2001³â, pp.45-55
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920730291)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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ȸ»ç¼Ò°³ ±¤°í¾È³» ÀÌ¿ë¾à°ü °³ÀÎÁ¤º¸Ãë±Þ¹æÄ§ Ã¥ÀÓÀÇ ÇѰè¿Í ¹ýÀû°íÁö À̸ÞÀÏÁÖ¼Ò ¹«´Ü¼öÁý °ÅºÎ °í°´¼¾ÅÍ
   

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