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Çѱ¹¼öÀÚ¿øÇÐȸ / v.38, no.2, 2005³â, pp.133-142
Á¡Âø¼º ÅðÀû¹°ÀÇ Ä§Àü Ư¼º ºÐ¼®
( Analysis of Characteristics of Cohesive Sediment Settling )
±èÁ¾¿ì;À±¼¼ÀÇ;ÀÌÁ¾ÅÂ; ;°æ±â´ëÇб³ Åä¸ñ¤ýȯ°æ°øÇкÎ;°æ±â´ëÇб³ Åä¸ñ¤ýȯ°æ°øÇкÎ;
 
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¹Ì¼¼ÇÏ°Ô ºÎÀ¯µÈ ÀÔÀÚ(alumina(Al$_2$O$_3$), quartz(SiO$_2$))ÀÇ Ä§Àü ³óµµ¸¦ ¹°¸®-È­ÇÐÀû(Ãʱâ³óµµ, pH, NaCl)ÀÎ ¿µÇâÀ» °í·ÁÇϸ鼭 ¿¬±¸ÇÏ¿´´Ù. ħ°­½ÇÇèÀº ÀÔÀÚ»çÀÌÀÇ ²ø¾î´ç±â´Â Èû ¶§¹®¿¡ Flocculation(ÇÃ·Ï Çü¼º)ÀÌ ÀÏÀ¸Å°´Â Ãʱâ³óµµ¿Í NaClÀÇ Áõ°¡°¡ Áß¿äÇÑ ¿µÇâÀ» ¹ÌÄ¡¸ç, ´õ¿íÀÌ ¹Ì¸³ÀÚ(alumina(Al$_2$O$_3$))ÀÇ ³óµµ-½Ã°£ °î¼±¿¡ pHÀÇ ¿µÇâÀÌ ¸Å¿ì Å­À» º¸¿´´Ù. ¶ÇÇÑ Á¤Áö¼ö¸é Á¶°ÇÇÏ¿¡¼­ ¹Ì¸³ÀÚÀÇ Ä§Àü °Åµ¿¿¹ÃøÀ» À§ÇÑ ¼öÄ¡ ¸ðµ¨Àº ºÎÁ¤·ù 1Â÷¿ø À̼۹æÁ¤½Ä¿¡ ÀÇÇØ ºÐ¼®µÇ¾úÀ¸¸ç ¾çÇØ¹ý, À½Çعý, Crank-Nicolson ±â¹ý ¹× À¯ÇÑÂ÷ºÐ¹ýÀ» ÀÌ¿ëÇÏ¿´´Ù. ¼öÄ¡¸ðµ¨Àº ÆòÇüÀ» ÀÌ·é ³óµµº¯È­±îÁö ¿¹ÃøÇÏ¿´À¸¸ç, ½ÇÇèÄ¡ÀÇ ºñ±³ºÐ¼®À» ÅëÇØ Áß¾ÓÂ÷ºÐ¹ýÀ» ÅëÇÑ Implicit ¸ðÇüÀÇ °è»êÀÌ ´ëü·Î ÀÏÄ¡ÇÏ¿´´Ù.
The settling concentration of fine suspended solid particles(alumina(Al$_2$O$_3$) and quartz(SiO$_2$)) is investigated with the physico-chemical effects(initial concentration, pH and NaCl). Laboratory tests have confirmed the significant influence of increasing initial concentration and salinity which can lead to flocculation due to the intermolecular attraction. Furthermore, the influence of the pH value on the concentration-time corves of alumina has been on firmed. Besides a numerical model to predict the behaviour of cohesive deposit under still water is analyzed by solving the unsteady one-dimensional diffusion-advection equation with a explicit, implicit, Crank-Nicolson and finite difference scheme. The model predicts the existence of an equilibrium concentration. Application of the model with implicit centered difference to data from settling experiments shows a similar distribution.
 
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Á¡Âø¼º ÅðÀû¹°;ºÎÀ¯;ħÀü³óµµ;cohesive deposit;suspension;settling concentration;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.38, no.2, 2005³â, pp.133-142
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200514714215136)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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