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Çѱ¹¼öÀÚ¿øÇÐȸ / v.24, no.4, 1991³â, pp.49-58
¾çÇØ¹ý°ú À½ÇعýÀ» ÀÌ¿ëÇÑ ¿µ»ê°­¿¡¼­ÀÇ ºÎÁ¤·ùÇØ¼®
( Unsteady Flow Analysis in the Youngsan River Using Explicit and Implicit Finite Difference Methods )
ÃÖ¼º¿í;¿©¿î±¤;ÁÖö;±èâ¿Ï;¿ÀÀ¯Ã¢; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ¼öÀÚ¿ø¿¬±¸½Ç À§ÃË¿¬±¸¿ø;¸íÁö´ëÇб³ Åä¸ñ°øÇаú, µ¿¸í±â¼ú°ø´Ü, Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ¼öÀÚ¿ø¿¬±¸½Ç (ÇѾç´ë Åä¸ñ°øÇаú ¹Ú»ç°úÁ¤);Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ¼öÀÚ¿ø¿¬±¸½Ç;;;
 
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¿µ»ê°­ À¯¿ªÀÇ 89³â 7¿ù È£¿ì¿¡ ´ëÇÏ¿© µÎ°¡Áö À¯ÇÑÂ÷ºÐ¹ýÀ» ÀÌ¿äÇÑ ºÎÁ¤·ùÇØ¼®À» ½Ç½ÃÇÏ¿´´Ù. À¯ÇÑ Â÷ºÐ¹ýÀ¸·Î´Â ¾çÇØ¹ýÀÇ °æ¿ì Leap Frog ±â¹ýÀ», À½ÇعýÀº Preissmann ±â¹ýÀ» »ç¿ëÇÏ¿´°í Áö¹è¹æÁ¤½ÄÀº ½Ö°î¼±Çü Æí¹ÌºÐ¹æÁ¤½ÄÀÇ ÀÏÁ¾ÀÎ Saint Venant ½ÄÀ» ÀÌ¿ëÇÏ¿´´Ù. ¿ÜºÎ°æ°èÁ¶°ÇÀ¸·Î´Â »ó·ù´ÜÀÇ À¯·®°ú ÇÏ·ù´ÜÀÇ Á¶À§¸¦ ÀÌ¿äÇÏ¿´À¸¸ç Çϱ¸¾ðÀ» ³»ºÎ°æ°èÁ¶°ÇÀ¸·Î Æ÷ÇÔ½ÃÄ×´Ù. Áöõ¿¡¼­ÀÇ À¯ÀÔ·®°ú »ó·ù´Ü¿¡¼­ÀÇ À¯·®Àº Àú·ùÇÔ¼ö¹ý¿¡ ÀÇÇÑ °á°ú·Î½á ½Ã°£º° ÀÔ·ÂÀÚ·á·Î »ç¿ëµÇ¾ú´Ù. ºñ±³Àû »ó·ù¿¡ ÇØ´çµÇ´Â ³ªÁÖÁöÁ¡¿¡¼­ ½ÇÃøÀÚ·á, Àú·ùÇÔ¼ö¹ý ±×¸®°í µÎ ¼öÄ¡¸ðÇü¿¡ ÀÇÇÑ °è»ê°ªÀ» ºñ±³Çغ» °á°ú ÇØÀÇ Á¤È®µµ´Â ¸¸Á·½º·¯¿ü°í ½ÇÃøÀÚ·á°¡ ¾ø´Â ÁßÇÏ·ùÁöÁ¡¿¡¼­µµ µÎ ¸ðÇü¿¡ ÀÇÇÑ °è»ê°ªÀ» ºñ±³ÇÔÀ¸·Î½á »ó´ëÀûÀ¸·Î ½Å·ÚÇÒ ¼ö ÀÖÀ½À» ¾Ë¾Ò´Ù. º» ¿¬±¸¸¦ ÅëÇÏ¿© ±âÁ¸ÀÇ ¼ö¹®ÇÐÀû È«¼öÃßÀû¹æ¹ý°ú ´õºÒ¾î ¼öÄ¡ÇØ¼®¿¡ ÀÇÇÑ ºÎÁ¤·ù¸ðÇüÀÌ È«¼ö¿¹°æº¸¾÷¹«¿¡ ÃæºÐÈ÷ ÀÌ¿ëµÉ ¼ö ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾úÀ¸¸ç, ¾ÕÀ¸·Î º»¸ðÇüÀ» ÀÌ¿ëÇÑ È«¼ö½Ã ¹è¼ö°©¹®ÀÇ ÃÖÀû¿î¿µ¹æ¾ÈµîÀÇ ¿¬±¸µµ ±â´ëµÈ´Ù ÇϰڴÙ.
Flood routing in the Youngsan River was performed for the flood event of July, 1989 by two finite difference methods. The Saint Venant eq., a kind of hyperbolic partial differential equation is employed as governing equation and the explicit scheme (Leap Frog) and implicit scheme (Preissmann) are used to discretize the GE. As for the external boundary conditions, discharge and tidal elevation are upstream and downstream BC, respectively and estuary dam is included in internal BC. Lateral inflows and upstream discharges are the hourly results from storage function method, At Naju station, a Relatively upstream points in this river, the outputs are interpreted as good ones by comparing two numerical results of FDMs with the observed data and the calibrated results by storage function method. and two computational results are compared at the other sites, from middle stream and downstream points, and thus are considered reliable. Therefore, we can conclude from this research that these numerical models are adaptable in simulating and forecasting the flood in natural channels in Korea as well as existing hydrologic models. And the study about optimal gate control at the flood time is expected as further study using these models.
 
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.24, no.4, 1991³â, pp.49-58
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199111920093792)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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