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Çѱ¹¼öÀÚ¿øÇÐȸ / v.33, no.4, 2000³â, pp.483-493
È«¼öÅÍ¿¡¼­ÀÇ ¹ü¶÷ È«¼ö·ù¿¡ ÀÇÇÑ 2Â÷¿ø ¼öÄ¡¸ðÀÇ
( Two Dimensional Analysis on Inundated Flow in Floodplain )
ÇѰǿ¬;Á¤ÀçÇÐ;ÀÌÀ»·¡; °æºÏ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;±¹¸³¹æÀ翬±¸¼Ò;°æºÏ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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º» ¿¬±¸´Â 2Â÷¿ø À¯ÇÑ¿ä¼Ò¸ðÇüÀÎ RMA¸¦ ÀÌ¿ëÇÏ¿© ÇϵµÈ帧ÀÇ È«¼öÅÍ·ÎÀÇ ¹ü¶÷Çö»óÀ» ¸ðÀÇÇÏ¿´´Ù. Marsh porosity ±â´ÉÀ» ÀÌ¿ëÇÏ¿© °è»ê¿ä¼Ò°¡ Á¥Àº Çϵµ¿¡¼­ ¸¶¸¥Çϵµ·Î Á¡ÁøÀûÀ¸·Î º¯È­ÇÏ´Â Çö»óÀ» °¡´ÉÇÏ°Ô ÇÑ´Ù. Á¥Àº/¸¶¸¥Çϵµ °è»ê±â´É¿¡ ´ëÇÑ Àû¿ë¼ºÀ» È®ÀÎÇϱâ À§Çؼ­ ±ÕÀÏÇÑ »ç´Ù¸®²Ã Çϵµ±¸°£¿¡ Àû¿ëÇÏ¿´°í »çÇàÇϵµ¿¡¼­ È«¼öÅ͸¦ ÅëÇÑ È«¼ö¸ðÀǸ¦ ½Ç½ÃÇÏ¿´´Ù. »çÇàÇϵµ¿¡ ´ëÇÑ Àû¿ë°á°ú È«¼öÅÍ¿¡¼­ÀÇ È帧ÀÇ ´ÜÃàÇö»óÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú°í ´Ù¾çÇÑ »çÇ൵¿Í È«¼öÅÍ Á¶µµ¿¡ ´ëÇÑ ¿µÇâÀ» Æò°¡ÇÏ¿´´Ù. º» ¸ðÇüÀ» ±Ý°­ º»·ùºÎ¿¡ Àû¿ëÇÏ¿´´Âµ¥ wet/dry °è»êÀº µ¿ÀÏÇÑ À¯ÇÑ¿ä¼Ò¸ÁÀ» ÀÌ¿ëÇÏ¿© ´Ù¾çÇÑ À¯·®Á¶°Ç¿¡¼­ÀÇ ¸ðÀǸ¦ ½Ç½ÃÇÏ¿´´Ù.
Two dimensional finite element model, RMA, is used to simulate flood inundation phenomena from main channel to floodplain. The marsh porosity method allows finite elements to simulate gradual transition between wet and dry states. The model is applied to prismatic trapezoidal channel to test the applicability of wetting and drying. The floodwave in a river which meanders through a floodplain is also analyzed. The short-circuiting effects, in which the flow leave the meandering main channel and takes a more direct route on the floodplain, are analyzed with various sinuosity factor and roughness coefficients. Finally, the model is applied to the midstream of the Keum River. Wet/dry calculation can simulate the various discharge condition with the same finite element networks.
 
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ÇÏõ;¹ü¶÷È«¼ö;Á¥Àº/¸¶¸¥ Çϵµ »óÅÂ;À¯ÇÑ¿ä¼Ò¸ðÇü;river;flood inundation;wet/dry states;finie element model;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.33, no.4, 2000³â, pp.483-493
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200011920063859)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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