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Çѱ¹¼öÀÚ¿øÇÐȸ / v.44, no.7, 2011³â, pp.511-522
ÀûÀÀÀû ¸Þ½¬¼¼ºÐÈ­±â¹ý°ú ºÐÇÒ°ÝÀÚ±â¹ýÀ» ÀÌ¿ëÇÑ ±ØÇÑ µµ½ÃÈ«¼ö ½ÇÇè ¸ðÀÇ
( Numerical Simulation of Urban Flash Flood Experiments Using Adaptive Mesh Refinement and Cut Cell Method )
¾ÈÇö¿í;À¯¼ø¿µ; ±¹°¡¼ö¸®°úÇבּ¸¼Ò °è»ê¼ö¸®°úÇבּ¸ºÎ ¼öÄ¡ÇÁ·Î±×·¥¿¬±¸ÆÀ;±¹°¡¼ö¸®°úÇבּ¸¼Ò °è»ê¼ö¸®°úÇבּ¸ºÎ ¼öÄ¡ÇÁ·Î±×·¥¿¬±¸ÆÀ;
 
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ÀûÀÀÀû ¸Þ½¬¼¼ºÐÈ­±â¹ý°ú ºÐÇÒ°ÝÀÚ±â¹ýÀ» Àû¿ëÇÑ 2Â÷¿ø õ¼ö¹æÁ¤½Ä¸ðÇüÀ» Ȱ¿ëÇÏ¿© ±¸Á¶¹°À» °í·ÁÇÑ ±ØÇÑ È«¼ö ½ÇÇèÀ» ¸ðÀÇÇÏ¿´´Ù. º» ¿¬±¸¿¡ »ç¿ëµÈ¸ðÇüÀº µÎ °ÝÀÚ»ý¼º ±â¹ýÀ»ÇÔ²² »ç¿ëÇÔÀ¸·Î¼­ º¹ÀâÇÑ °æ°è¸¦º¸´Ù ÀûÀº °ÝÀÚ·Î È¿À²ÀûÀ¸·Î Ç¥ÇöÇÏ´Â °ÍÀÌ °¡´ÉÇϸç, µ¿Àû ÀûÀÀ ¸Þ½¬¼¼ºÐÈ­±â¹ýÀ» »ç¿ëÇÏ¿© È帧ÀÌ ºü¸£°Ô º¯ÇÏ´Â ¿µ¿ª¿¡¼­ Á¤È®µµ¸¦ À¯ÁöÇϸ鼭µµ È¿À²ÀûÀ¸·Î °è»êÇÏ´Â °ÍÀÌ °¡´ÉÇÏ´Ù. HLLC ¸®¸¸±Ù»çÇØ¹ý°ú MUSCL ±â¹ýÀ» Àû¿ëÇÏ¿© ½Ã°ø°£»ó¿¡¼­ 2Â÷Á¤µµ¸¦ À¯ÁöÇϸç, ´ïºØ±«ÆÄ¿Í °°Àº ºÒ¿¬¼ÓÀûÀÎ È帧À» Á¤È®ÇÏ°Ô ¸ðÀÇÇÒ ¼ö ÀÖ´Ù. ¸ðÇüÀÇ °ËÁõÀ» À§ÇØ IMPACT ÇÁ·ÎÁ§Æ®¿¡¼­ ¼öÇàÇÑ µµ½ÃÁö¿ª ±ØÇÑÈ«¼ö½ÇÇèÀ» ¸ðÀÇÇÏ¿´´Ù. ½ÇÇè°á°ú¿Í ¸ðÀǰá°ú°¡ ¾çÈ£ÇÏ°Ô ÀÏÄ¡ÇÏ´Â °ÍÀ» È®ÀÎÇÏ¿´À¸¸ç, õÀÌ·ù Çö»ó°ú ÇÔ²² ±¸Á¶¹°¿¡ ÀÇÇÑ È«¼öÆÄ Àü´Þ ¾ç»óÀÌ ÀǹÌÀÖ´Â ¼öÁØÀ¸·Î ¸ðÀÇµÈ °ÍÀ» È®ÀÎÇÏ¿´´Ù. ¶ÇÇÑ ºÐÇÒ°ÝÀÚ±â¹ýÀÇ »ç¿ëÀ¸·Î ¸ðµ¨ÀÇ °ÝÀÚ ¹Î°¨µµ°¡ Çâ»óµÇ¾ú´Ù. º» ¸ðµ¨Àº ´ïºØ±«¿Í °°ÀÌ ³»¼öħ¼öÇö»óÀÌ Áö¹èÀûÀÌÁö ¾ÊÀº µµ½Ã¹ü¶÷À» ¸ðÀÇÇϴµ¥ Ȱ¿ëÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ±â´ëµÈ´Ù.
Two-dimensional shallow water model based on the cut cell and the adaptive mesh refinement techniques is presented in this paper. These two mesh generation methods are combined to facilitate modeling of complex geometries. By using dynamically adaptive mesh, the model can achieve high resolution efficiently at the interface where flow changes rapidly. The HLLC Reimann solver and the MUSCL method are employed to calculate advection fluxes with numerical stability and precision. The model was applied to simulate the extreme urban flooding experiments performed by the IMPACT (Investigation of Extreme Flood Processes and Uncertainty) project. Simulation results were in good agreement with observed data, and transient flows as well as the impact of building structures on flood waves were calculated with accuracy. The cut cell method eased the model sensitivity to refinement. It can be concluded that the model is applicable to the urban flood simulation in case the effects of sewer and stormwater drainage system on flooding are relatively small like the dam brake.
 
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õ¼ö¹æÁ¤½Ä;ÀûÀÀÀû ¸Þ½¬¼¼ºÐÈ­;ºÐÇÒ°ÝÀÚ¹ý;±ØÇÑ µµ½Ã È«¼ö;Shallow water equation;Adaptive mesh refinement;Cut cell method;Urban flash flood;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.44, no.7, 2011³â, pp.511-522
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201123163434084)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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