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Çѱ¹¼öÀÚ¿øÇÐȸ / v.42, no.10, 2009³â, pp.891-896
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ÆÛÇÁ¸ðÇüÀ» ÀÌ¿ëÇÑ Áؼ³Ç÷ýÀÇ È¥Çհŵ¿ ¸ðÀÇ
( Simulation of Mixing Behavior for Dredging Plume using Puff Model ) |
| ±è¿µµµ;¹ÚÀçÇö;À̸¸¼ö; ÀÎÁ¦´ëÇб³ ȯ°æ°øÇкÎ(³«µ¿°À¯¿ªÈ¯°æ¿¬±¸¼¾ÅÍ);ÀÎÁ¦´ëÇб³ Åä¸ñ°øÇаú;Çö´ë°Ç¼³(ÁÖ) ±â¼ú°³¹ß¿ø;
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| Áؼ³ ½Ã ¹ß»ýÇÏ´Â ºÎÀ¯¹°ÀÇ ÀÌ¼Û È®»ê °úÁ¤À» ÇØ¼®Çϱâ À§ÇÏ¿© ÆÛÇÁ¸ðÇüÀ» °³¹ßÇÏ¿´´Ù. º» ¿¬±¸¿¡¼ °³¹ßµÈ ÆÛÇÁ ¸ðÇüÀº ÃßÀû¹æ¹ý¿¡ µû¶ó Àü¹æÃßÀû¸ðÇü°ú ÈĹæÃßÀû¸ðÇüÀ¸·Î ³ª´ ¼ö ÀÖÀ¸¸ç, ÀÌ µÎ °¡Áö ÃßÀû¹æ¹ýÀº °è»êÈ¿À²°ú ¼öÄ¡ ¿ÀÂ÷¿¡ ÀÖ¾î¼ »óÀÌÇÑ Æ¯¼ºÀ» ³ªÅ¸³»¾ú´Ù. °æ°è󸮿¡ ÀÖ¾î¼ ÀÔÀÚÃßÀû¸ðÇü°ú »óÀÌÇÑ ¹æ¹ýÀ» »ç¿ëÇÏ´Â ÆÛÇÁ¸ðÇüÀº Æó°æ°è¿¡¼´Â ÀÔÀÚÃßÀû¸ðÇü°ú µ¿ÀÏÇÑ °á°ú¸¦ ³ªÅ¸³»Áö¸¸ °³°æ°è¿¡¼´Â ´Ù¸¥ °á°ú¸¦ ³ªÅ¸³»¾ú´Ù. ¶ÇÇÑ ¿À¿°¿øÀÌ ÀÓÀÇÀÇ °ø°£Àû ºÐÆ÷¸¦ °®´Â °æ¿ì, ÆÛÇÁ¸ðÇüÀº ÀÔÀÚÃßÀû¸ðÇüº¸´Ù´Â ÀûÀº ¼öÀÇ ÆÛÇÁ¸¦ »ç¿ëÇÒ ¼ö ÀÖÁö¸¸ ÀÌ¿¡ µû¸¥ °æ°è¸é¿¡¼ÀÇ ¼öÄ¡¿ÀÂ÷¸¦ ¹ß»ýÇÏ¿´´Ù. È帧ÀÌ ÀÏÁ¤ÇÑ °æ¿ì¿Í Àü´ÜÈ帧ÀÇ °æ¿ì¿¡ ´ëÇÏ¿© ÀÌ¼Û È®»ê ¼öÄ¡¸ðÀǸ¦ ¼öÇàÇÏ¿´À¸¸ç, À̸¦ °¢°¢ÀÇ °æ¿ìÀÇ ÇØ¼®ÇØ °á°ú¿Í ºñ±³ ºÐ¼®ÇÏ¿´´Ù. ÈĹæÃßÀû ÆÛÇÁ¸ðÇüÀº Àü¹æÃßÀû ÆÛÇÁ¸ðÇü¿¡ ºñÇÏ¿© »ç¿ëµÈ ÆÛÇÁ¼ö¿Í °ü°è¾øÀÌ ÀÛÀº ¿ÀÂ÷¸¦ ¹ß»ýÇÏ¿´À¸¸ç, ÀüüÀûÀ¸·Î ÆÛÇÁ¸ðÇüÀÌ ÀÔÀÚ¸ðÇüº¸´Ù´Â ÈξÀ ÀûÀº ¼öÀÇ °è»êÀ» ÅëÇØ¼µµ ÀÛÀº ¿ÀÂ÷¸¦ ³ªÅ¸³¾ ¼ö ÀÖ´Ù´Â °ÍÀ» ¾Ë ¼ö ÀÖ¾ú´Ù. ±×·¯³ª Gaussian ºÐÆ÷¸¦ °®´Â ÆÛÇÁ¸ðÇüÀº Àü´ÜÈ帧¿¡¼ÀÇ ±ä À¯¼±Çü ³óµµºÐÆ÷¸¦ ¸ðÀÇÇÒ ¼ö ¾ø¾ú°í, ÀÌ¿¡ °üÇÑ ¿ÀÂ÷´Â Àü´Ü°è¼ö°¡ Áõ°¡ÇÔ¿¡ µû¶ó ºñ¼±ÇüÀûÀ¸·Î Áõ°¡ÇÏ¿´´Ù. ÀÌ¿Í °°ÀÌ ÆÛÇÁ¸ðÇüÀº ´Ù¾çÇÑ ¼öȯ°æ¿¡ Àû¿ëÇÒ °æ¿ì, ¶Ù¾î³ È¿À²¼º¿¡ ºñÇØ Á¤È®µµ°¡ ´Ù¼Ò °¨¼ÒÇÏ´Â °æÇâÀÌ ÀÖÁö¸¸, ÀÔÀÚÃßÀû¸ðÇü°úÀÇ ¿¬°è ¸ðÀÇ µîÀ» ÅëÇØ Áؼ³ÁöÁ¡ ÀαÙÀÇ ±Ù¿ª¿¡¼ÀÇ ¿À¿°¿ø ÇØ¼®¿¡ »ç¿ëµÉ ¼ö ÀÖ´Ù. |
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| The puff models have been developed to simulate the advection-diffusion processes of dredging suspended solids, either alone or in combination with Eulerian models. Computational efficiency and accuracy are of prime importance in designing these hybrid approaches to simulate a pollutant discharge, and we characterize two relatively simple Lagrangian techniques in this regard: forward Gaussian puff tracking (FGPT), and backward Gaussian puff tracking (BGPT). FGPT and BGPT offer dramatic savings in computational expense, but their applicability is limited by accuracy concerns in the presence of spatially variable flow or diffusivity fields or complex no-flux or open boundary conditions. For long simulations, particle and/or puff methods can transition to an Eulerian model if appropriate, since the relative computational expense of Lagrangian methods increases with time for continuous sources. Although we focus on simple Lagrangian models that are not suitable to all environmental applications, many of the implementation and computational efficiency concerns outlined herein would also be relevant to using higher order particle and puff methods to extend the near field. |
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| Ű¿öµå |
| ÆÛÇÁ¸ðÇü;À̼Û.È®»ê;Àü¹æÃßÀû;ÈĹæÃßÀû;°è»êÈ¿À²;puff model;advection-diffusion;forward Gaussian puff tracking;backward Gaussian puff tracking;computational efficiency; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.42, no.10, 2009³â, pp.891-896
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200932848675464)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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