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Çѱ¹¼öÀÚ¿øÇÐȸ / v.44, no.12, 2011³â, pp.955-965
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( An Estimation of Discharge Coefficient Considering the Geometrical Shape of Broad Crested Side Weir ) |
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º» ¿¬±¸¿¡¼´Â ±¤Á¤È¾¿ù·ùÀ§¾îÀÇ Á¤È®ÇÑ ¿ù·ù·®À» »êÁ¤Çϱâ À§ÇØ Á÷»ç°¢Çü, 1:1 ¹× 1:2 °æ»ç »ç´Ù¸®²Ã À§¾î¿¡ ´ëÇÑ Çü»óº° È帧Ư¼ºÀ» ¼ö¸®½ÇÇèÀ» ÅëÇØ È®ÀÎÇÏ¿´´Ù. È帧Àº »ç´Ù¸®²Ã Çü»óÀ¸·Î »ç¸é°æ»ç°¡ ÀÛÀ»¼ö·Ï È帧ÀÌ ¾ÈÁ¤ÀûÀ̾úÀ¸¸ç, °¢ Çü»óº° À§¾î ¿ù·ù·®ÀÇ °æ¿ì Á÷»ç°¢Çü Çü»óº¸´Ù 1 : 1 ¹×1 : 2 »ç´Ù¸®²Ã Çü»ó¿¡¼ °¢ 5.67% ¹× 8.57% °¡·® Áõ°¡ÇØ È«¼ö¹èÁ¦ ´É·Â¿¡¼µµ À¯¸®ÇÑ °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ±âÁ¸ÀÇ À¯·®°è¼ö½Ä¿¡ Ⱦ¿ù·ùÀ§¾î Çü»ó¿¡ ´ëÇÑ ¸Å°³º¯¼ö $L/L_H$¸¦ Ãß°¡ÇÑ ´ÙÁßȸ±ÍºÐ¼®À¸·Î °¢ Çü»óº° À¯·®°è¼ö½Ä°ú Çü»óÀ» ÀϹÝÈ ½ÃŲ ÅëÇÕ À¯·®°è¼ö½ÄÀ» Á¦½ÃÇÏ¿´´Ù. ¶ÇÇÑ ¼±Ç࿬±¸ ¹× ±âÁ¸ ¿¬±¸ÀÚµéÀÇ ½ÇÇèÀÚ·á¿Í º» ½ÇÇèÀÇ ¿¬±¸ÀڷḦ ÀÌ¿ëÇÏ¿©, ÃøÁ¤µÈ ¿ù·ù·®°ú °è»êµÈ ¿ù·ù·®À» ºñ±³ÇÏ¿© »õ·Ó°Ô Á¦¾ÈÇÏ´Â À¯·®°è¼ö½ÄÀÇ Àû¿ë¼ºÀ» È®ÀÎÇÏ¿´´Ù. |
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The flow characteristics of rectangular and 1 : 1 and 1 : 2 trapezoidal weirs were investigated through hydraulic experiments in order calculate the exact overflow discharge of the broad-crested side weir. The flow was found to be most stable in trapezoidal shapes with the lowest incline. The 1 : 1 and 1 : 2 trapezoidal weirs had 5.67% and 8.57% increases, respectively, compared to the rectangular weir in terms of overflow amount, which suggests that they are more effective in preventing flood. An integrated discharge coefficient equation taking into account the discharge coefficient equation and shapes was proposed through a multiple linear regression analysis with an addition of a new parameter for the side wear, $L/L_H$, to the conventional discharge coefficient equation. Also, the applicability of the newly proposed discharge coefficient equation was reviewed by comparing the measured and calculated overflow amounts based on the experimental data of preceding researches and existing researchers and the research data of this study. |
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Ű¿öµå |
±¤Á¤(ÎÆð¢)Ⱦ¿ù·ùÀ§¾î;À¯·®°è¼ö;È帧Ư¼º;À§¾îÇü»ó;broad crested side weir;estimation of discharge coefficient;flow characteristics; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.44, no.12, 2011³â, pp.955-965
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO201105462034391)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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