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Çѱ¹¼öÀÚ¿øÇÐȸ / v.32, no.2, 1999³â, pp.153-162
Á¤Áö¼öü·Î ¹æ·ùµÈ ¿¬Á÷´ÙÁßulcorner©ÀulcornerÃÖ¼ÒÈñ¼®·ü
( Minimum Dilution of Vertical Multijet Discharging into Stagnant Water )
±èÈ«½Ä;¼­ÀÏ¿ø;À¯´ë¿µ;¼­¿ë¿ø; ¼­¿ï´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú ¹Ú»ç°úÁ¤¼ö·á;¼­¿ï´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;¼­¿ï´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú ¹Ú»ç°úÁ¤¼ö·á;¼­¿ï´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â Á¤Áö¼öü¿¡¼­ ´Ù°øÈ®»ê°üÀ» ÅëÇØ ¹æ·ùµÈ ¿¬Á÷´ÙÁßÀÇ È¥ÇÕ ¹× Èñ¼® Ư¼º¿¡ ´ëÇØ ±Ô¸íÇÏ¿´´Ù. 3Â÷¿ø ½ÇÇè¼öÁ¶¿¡¼­ ½ÇÇèÀ» ÅëÇØ ¹àÇôÁø °á°ú´Â ´ÙÀ½°ú °°´Ù. ¿ì¼± ´Ù°øÈ®»ê°üÀÇ º´ÇÕ°úÁ¤À» »ìÆìº¸¸é È帧ÀÇ ¾ÈÁ¤Á¶°Ç¿¡ µû¶ó º´ÇհŸ®°¡ ´Ù¼Ò Â÷À̰¡ ÀÖ±â´Â ÇÏÁö¸¸ {{{{ { z}_{ } }}}}/{{{{ {l}_{ } }}}}°¡ ´ë·« 3ÀÎ ÁöÁ¡ºÎÅÍ º´ÇÕÀÌ ½ÃÀÛµÇ¾î ±× ÀÌÈÄ¿¡´Â Æò¸éºÎ·Â£¿ÀÇ °Åµ¿¿¡ ¼­¼­È÷ °¡±î¿öÁüÀ» ¾Ë ¼ö ÀÖ´Ù. ÃÖ¼ÒÈñ¼®·ü¿¡ ´ëÇØ ºÐ¼®ÇØ º» °á°ú, ¹æ·ù¿îµ¿·®ÀÌ Áö¹èÀûÀÎ ¿µ¿ª, õÀÌ¿µ¿ª, ±×¸®°í ºÎ·ÂÀÌ Áö¹èÀûÀÎ ºÎ·Â·ù¿µ¿ªÀ¸·Î ³ª´©¾î Èñ¼®·ü Ư¼ºÀ» Ç¥ÇöÇÒ ¼ö ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. º» ¿¬±¸ÀÇ ½ÇÇè°á°ú ´Ù°øÈ®»ê°üÀÇ °æ¿ì ºÎ·Â·ù¿µ¿ªÀÇ Èñ¼®·ü »ó¼ö°¡ Æò¸éÈ®»ê°ü¿¡ ºñÇØ 15% ´õ ³ô°Ô ³ª¿Ô´Ù. ±× ÀÌÀ¯´Â ´Ù°øÈ®»ê°üÀÇ °æ¿ì º´ÇÕ ÀÌÀü¿¡´Â °³º°ÀÇ °æ°è¸é¿¡¼­ ÁÖº¯¼öÀÇ Æ÷ȹÀÌ ¹ß»ýÇÏ¿© Èñ¼®ÀÌ Áõ´ëµÇ±â ¶§¹®ÀÌ´Ù.
In this study, mixing and dilution characteristics of vertical multijet discharged by multiport diffuser into stagnant water are investigated. The results obtained from the experiment of multiport diffuser performed in the three dimensional flume are as follows. As far as merging process of multiport diffuser is concerned, merging starts at about z/l = 3 although merging length is dependent upon stability condition and thereafter lateral temperature distribution becomes gradually uniform which is typical distribution of plane jet. Analyses of experimental data for minimum dilution show that characteristics of minimum dilution are described based on three regions which are jet region where momentum is dominated, intermediate region, and plume region where buoyancy is dominated. Minimum dilution coefficient in plume region of multiport diffuser obtained in this study is 15% higher than that of plane diffuser. This is because individual jet of multiport diffuser entrains more ambient water before merging is occurred, and therefore dilution increases.
 
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´Ù°øÈ®»ê°ü;¿¬Á÷´ÙÁß;ÃÖ¼ÒÈñ¼®·ü;Æò¸éÈ®»ê°ü;multiport diffuser;vertical multijet;minmum dilution;plane diffuser;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.32, no.2, 1999³â, pp.153-162
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911920063042)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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ȸ»ç¼Ò°³ ±¤°í¾È³» ÀÌ¿ë¾à°ü °³ÀÎÁ¤º¸Ãë±Þ¹æÄ§ Ã¥ÀÓÀÇ ÇѰè¿Í ¹ýÀû°íÁö À̸ÞÀÏÁÖ¼Ò ¹«´Ü¼öÁý °ÅºÎ °í°´¼¾ÅÍ
   

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