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Çѱ¹¼öÀÚ¿øÇÐȸ / v.34, no.5, 2001³â, pp.499-509
ÀÔÀÚÀÇ ÀÌ»êÈ®·üºÐÆ÷ ¸ðÇüÀ» ÀÌ¿ëÇÑ ÀÚ¿¬ÇÏõÀÇ 2Â÷¿ø À̼Û-È®»ê
( Modeling of 2-D Advection-Diffusion in Natural Streams Using Particle Discrete Probability Distribution Model )
±è¿µµµ;¼­ÀÏ¿ø; ¼­¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;¼­¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;
 
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ÀÚ¿¬ÇÏõ¿¡¼­ÀÇ À̼Û-È®»ê °úÁ¤ÀÇ ¸ðÀǸ¦ À§ÇÏ¿© ÀÔÀÚÀ§Ä¡ÀÇ ÀÌ»êÈ®·üºÐÆ÷¿¡ ±âÃÊÇÑ 2Â÷¿ø ¼ö¼Û ¸ðÇüÀ» °³¹ßÇÏ¿´´Ù. Á¦¾ÈµÈ ¸ðÇü¿¡¼­´Â ´ÜÀ§ ½Ã°£°£°Ýµ¿¾È °ÝÀÚ°£ÀÇ Áú·®À̼ÛÀ» ¿¹ÃøÇϱâ À§ÇÏ¿© Æò±Õ°ú ºÐ»êÀÇ ÇÔ¼ö·Î ³ªÅ¸³»¾îÁø È®·üºÐÆ÷¸¦ »ç¿ëÇÏ¿´´Ù. °³¹ßµÈ ¸ðÇüÀº À¯¼Ó, È®»ê°è¼ö, ´Ü¸éÀûÀÌ ÀÏÁ¤ÇÑ ´Ü¼ø¿µ¿ª¿¡ ´ëÇÏ¿© ¼öġȮ»êÀÌ ¾ø´Â ÇØ¸¦ ±¸ÇÏ¿´°í, ¾çÀÇ È®·üÀ» ¸¸Á·½ÃŰ´Â ¾ÈÁ¤Á¶°ÇÀÌ ¼º¸³ÇÑ´Ù¸é, ÇØ¼®ÇØ¿Í ´Ù¸¥ À¯ÇÑÂ÷ºÐ¹ý°ú ºñ±³ÇÏ¿´À» ¶§, ÁÁÀº °á°ú¸¦ ³ªÅ¸³»¾ú´Ù. º» ¸ðÇüÀÇ ÇöÀåÀû¿ë¼ºÀ» °ËÅäÇϱâ À§ÇÏ¿© ij³ª´Ù¿¡ À§Ä¡ÇÑ Grand River¸¦ ´ë»óÀ» ¾òÀº ¼öÄ¡½ÇÇè °á°ú¸¦ Á¤»ó»óÅÂÀÇ »ö¼Ò½ÇÇè °á°ú¿Í ºñ±³ÇÏ¿´´Ù. ±× °á°ú·Î¼­ º» ¸ðÇüÀº ÀÚ¿¬ÇÏõ¿¡¼­ÀÇ 2Â÷¿ø À̼Û-È®»êÀ» Àß ¸ðÀÇÇÒ ¼ö ÀÖ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù.
2-D transport model based on a discrete probability distribution for a particle displacement was developed too solve advection-diffusion problems in natural stream. In this proposed model, the probabilities expressed as an average and variance function were used to predict the mass transfer between cells in one time step. The proposed model produces solutions without numerical dispersion for constant velocity, diffusion coefficient, and cross-sectional area. When the stability and positivity restrictions were satisfied, the model produced excellent results compared to analytical solutions and other finite difference methods. The proposed model is tested against the dispersion data collected in the Grand River, Canada. The simulation results show that the proposed model can properly describe the two-dimensional mixing phenomena in the natural stream.
 
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ÀÌ»êÈ®·üºÐÆ÷;ÀÔÀÚÀ§Ä¡;À̼Û-È®»ê;¼öġȮ»ê;¾ÈÁ¤Á¶°Ç;discrete probability distribution;particle displacement;advection-diffusion;numerical dispersion;stability condition;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.34, no.5, 2001³â, pp.499-509
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200111920841083)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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