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Çѱ¹¼öÀÚ¿øÇÐȸ / v.37, no.12, 2004³â, pp.979-991
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»çÇàÇÏõ¿¡¼ ¿À¿°¹°ÁúÀÇ 2Â÷¿ø °Åµ¿Æ¯¼º ÇØ¼®
( Analysis of Two-Dimensional Pollutant Transport in Meandering Streams ) |
| ¿ÀÁ¤¼±;¼ÀÏ¿ø;±è¿µÇÑ; ¼¿ï½ÃÁ¤°³¹ß¿¬±¸¿ø;¼¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;¼¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;
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| º» ¿¬±¸¿¡¼´Â »çÇàÇÏ´Â ÀÚ¿¬ÇÏõ¿¡ À¯ÀÔµÈ ¿À¿°¹°ÁúÀÇ 2Â÷¿ø È®»ê Ư¼ºÀ» ¸ðÀÇÇϱâ À§ÇÏ¿© 2Â÷¿ø ¼ö½ÉÀûºÐ ¸ðÇüÀÎ RMA2¿Í RMA4¸¦ »ç¿ëÇÏ¿´´Ù. ¸ÕÀú 2Â÷¿ø µ¿¼ö¿ªÇÐÀûÀÎ ¸ðÇüÀÎ RMA2¸¦ »ç¿ëÇÏ¿© È帧ÀåÀ» ¸ðÀÇÇÑ ÈÄ ÀÌ °á°ú¸¦ 2Â÷¿ø ¼öÁú¸ðÇüÀÎ RMA4¿¡ ÀÔ·ÂÇÏ¿© ³óµµÀåÀ» ¸ðÀÇÇÏ¿´´Ù. ¼öÄ¡¸ðÇüÀ» SÀÚÇü »çÇà¼ö·Î¿¡¼ ÃøÁ¤ÇÑ È帧 ¹× ÃßÀûÀÚ ³óµµÀڷḦ ÀÌ¿ëÇÏ¿© °ËÁõÇÑ °á°ú, RMA4 ¸ðÇüÀº ÃÖ´ëÀ¯¼Ó¼±ÀÌ ¸¸°îÀÇ ³»Ãø¿¡ Ä¡¿ìÃÄ ³ªÅ¸³ª´Â Çö»óÀ» Àß ¸ðÀÇÇϰí ÀÖ¾úÀ¸¸ç, RMA4 ¸ðÇüÀº ¿À¿°¿îÀÇ Àü¹ÝÀûÀÎ È®»ê Ư¼º°ú ºÐ¸® Çö»óÀ» ÀûÀýÇÏ°Ô ¸ðÀÇÇϰí ÀÖ¾ú´Ù. ¼öÄ¡¸ðÇüÀ» ½ÇÁ¦ ÇÏõ¿¡ Àû¿ëÇÏ¿© ÇöÀå ½ÇÇè °á°ú¸¦ ºñ±³ÇÑ °á°ú, RMA2 ¸ðÇüÀº ÀüüÀûÀÎ È帧 Ư¼º ¹× ¸¸°îÀÇ ¿ÜÃø Á¦¹æÀ¸·Î Ä¡¿ìÄ¡´Â ÃÖ´ëÀ¯¼Ó¼±ÀÇ °æÇâ µîÀ» Àß ¸ðÀÇÇÏ¿´À¸¸ç, RMA4¸ðÇüÀº ¿À¿°¿îÀÌ ÃÖ´ëÀ¯¼Ó¼±À» µû¶ó À̵¿ÇÏ´Â °æÇâ µîÀ» ÀûÀýÇÏ°Ô ÀçÇöÇÏ´Â °ÍÀ¸·Î ¹àÇôÁ³´Ù. º» ¿¬±¸¿¡¼ ºÐ»ê°è¼ö´Â ½ÇÃø ³óµµºÐÆ÷·ÎºÎÅÍ °è»êÇÑ °ªÀ» ¹Ì¼¼ Á¶Á¤ÇÏ¿© »ç¿ëÇÏ¿´À¸¸ç, ÀÌ´Â ±âÁ¸ÀÇ ÃßÁ¤½Ä¿¡ ÀÇÇÑ ÃßÁ¤Ä¡¿Íµµ Àß ºÎÇÕÇÏ´Â °ÍÀ¸·Î ¹àÇôÁ³´Ù. |
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| In this study, RMA2 and RMA4, the 2-D depth-averaged models, were employed to simulate the two-dimensional mixing characteristics of the pollutants in the natural streams. The velocity and depth were first calculated using RMA2, 2-D hydrodynamic model, and then the resulting flow field was inputted to RMA4, 2-D water quality model, to compute the concentration field. RMA models were verified using the velocity and concentration data measured in S-curved meandering channel. The results showed that the RMA2 model simulated well the phenomenon that the maximum velocity line is located at the Inner bank of meandering channel, and the RMA4 model was well adapted to reproduce the general mixing behavior and the separation of tracer clouds. Comparing model simulations with measured data in the field experiments, RMA2 model simulated well general flow field and tendency that the maximum velocity line skewed toward the outer bank which were found in field experiments. The simulations of RMA4 model showed that the center of the tracer cloud tends to follow the path in which the maximum velocity occurs. In this study, the dispersion coefficients are fine-tuned based on the measured coefficients calculated using field concentration data, and the results show reasonable agreement with predictive equations. |
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| Ű¿öµå |
| »çÇàÇÏõ;¿À¿° È®»ê;2Â÷¿ø ¼öÄ¡¸ðÇü;À¯¼ÓºÐÆ÷;³óµµºÐÆ÷;ºÐ»ê°è¼ö;meandering streams;pollutant transport;2-D numerical model;velocity distribution;dispersion coefficient; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.37, no.12, 2004³â, pp.979-991
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200414714216492)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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