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Çѱ¹¼öÀÚ¿øÇÐȸ / v.40, no.12, 2007³â, pp.957-968
Chiu°¡ Á¦¾ÈÇÑ 2Â÷¿ø À¯¼ÓºÐÆ÷½ÄÀÇ ÀÚ¿¬ÇÏõ Àû¿ë¼º ºÐ¼®
( Application of Chiu's Two Dimensional Velocity Distribution Equations to Natural Rivers )
ÀÌÂùÁÖ;¼­ÀÏ¿ø;±èâ¿Ï;±è¿ø; Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ÇÏõ.ÇØ¾È¿¬±¸½Ç ¿¬±¸¿ø;¼­¿ï´ëÇб³ Áö±¸È¯°æ½Ã½ºÅÛ°øÇкÎ;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ÇÏõ.ÇØ¾È¿¬±¸½Ç;Çѱ¹°Ç¼³±â¼ú¿¬±¸¿ø ÇÏõ.ÇØ¾È¿¬±¸½Ç;
 
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¼öÀÚ¿øÀÇ Á¤·®ÀûÀÎ °èȹ°ú °ü¸®¸¦ À§Çؼ­´Â Á¤È®ÇÏ°í ½Å·Ú¼º ³ôÀº À¯·® ÀÚ·á°¡ ÇʼöÀûÀÌ´Ù. ÀÌ¿¡ µû¶ó ÃÖ±Ù¿¡ ÃÊÀ½ÆÄÀ¯·®°è¿Í À¯¼ÓÁö¼ö¹ý µîÀÇ ½Ç½Ã°£ À¯·® ÃøÁ¤ ¹æ¹ýÀÌ µµÀԵǰí ÀÖ´Ù. ÀÌ·¯ÇÑ ¹æ¹ýµéÀº ´Ü¸éÀÇ ÀϺκп¡¼­ ÃøÁ¤ÇÑ À¯¼ÓÀ» ÀÌ¿ëÇÏ¿© Àüü ´Ü¸éÀÇ À¯·®À» »êÁ¤Çϰí ÀÖÀ¸¹Ç·Î ÇÏõ ´Ü¸éÀÇ 2Â÷¿øÀû À¯¼ÓºÐÆ÷¿¡ ´ëÇÑ ÇÕ¸®ÀûÀ̰í ÀÌ·ÐÀûÀÎ ±âÃʰ¡ ÇÊ¿äÇÏ´Ù. º» ¿¬±¸¿¡¼­´Â Chiu(1987, 1988)°¡ Á¦¾ÈÇÑ 2Â÷¿ø À¯¼ÓºÐÆ÷½ÄÀ» ÀÚ¿¬ÇÏõ¿¡ Àû¿ëÇϰí ADCP ½ÇÃø ÀڷḦ ÀÌ¿ëÇÏ¿© ºñ±³ ºÐ¼®ÇÔÀ¸·Î½á Àû¿ë¼ºÀ» ºÐ¼®ÇÏ¿´´Ù. À̸¦ À§ÇØ ½ÇÃø ÀÚ·á·ÎºÎÅÍ ÃÖ´ëÀ¯¼Ó°ú Æò±ÕÀ¯¼ÓÀ» °è»êÇÑ ÈÄ ¸Å°³º¯¼ö MÀ» »êÁ¤ÇÏ¿´´Ù. µîÀ¯¼Ó¼± Çü»ó ¸Å°³º¯¼ö´Â ÃÖ¼ÒÀÚ½ÂÇÕ ±âÁØÀÇ ¸ñÀûÇÔ¼ö¸¦ ÀÌ¿ëÇÏ¿© ÃßÁ¤ÇÏ¿´´Ù. ÃÖÀûÈ­µÈ ¸Å°³º¯¼ö¸¦ Àû¿ëÇÏ¿© µµÃâµÈ ¿£Æ®·ÎÇÇ À¯¼ÓºÐÆ÷¸¦ ½ÇÃø À¯¼ÓºÐÆ÷¿Í ºñ±³ÇÑ °á°ú, ´ëü·Î Àß ÀÏÄ¡ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. »ó°üµµ°¡ ³ô°Ô ³ªÅ¸³ª´Â 14°³ÀÇ ½ÇÃø ÀڷḦ ÀÌ¿ëÇÏ¿© ¸Å°³º¯¼ö h, $eta_i$ÀÇ Æ¯¼ºÀ» ºÐ¼®ÇÑ ÈÄ ¹ÌÃøÁ¤ ´Ü¸é¿¡ Àû¿ëÇÒ ¼ö ÀÖµµ·Ï ±× °ªÀ» ÃßÁ¤ÇÏ¿´´Ù. ÃßÁ¤µÈ ¸Å°³º¯¼ö¸¦ °ËÁõÀ» À§ÇÑ ÀÚ·á¿¡ Àû¿ëÇÑ °á°ú ¿ª½Ã ½ÇÃø ÀڷḦ ´ëü·Î Àß ÀçÇöÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. À¯·®ÀÇ °æ¿ì ÃÖ´ë 7% ÀÇ ¿ÀÂ÷·Î ½ÇÃø ÀÚ·á¿Í ´ëü·Î ºñ½ÁÇÏ°Ô »êÁ¤ÇÏ¿´´Ù. ChiuÀÇ À¯¼ÓºÐÆ÷½Ä¿¡ °ü¿©ÇÏ´Â ¸Å°³º¯¼ö¸¦ ÀûÀýÈ÷ ÃßÁ¤ÇÑ´Ù¸é ÀÚ¿¬ÇÏõÀÇ À¯¼ÓºÐÆ÷¸¦ Àß ¸ðÀÇÇÒ ¼ö ÀÖÀ» °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
It is essential to obtain accurate and highly reliable streamflow data for quantitative management for water resources. Thereafter such real-time streamflow gauging methods as ultrasonic flowmeter and index-velocity are introduced recently. Since these methods calculate flowrate through entire cross-section by measuring partial velocities of it, rational and theoretical basis are necessary for accurate estimation of discharge. The purpose of the present study lies in analysis on the applicability of Chiu#s(1987, 1988) two dimensional velocity distribution equations by applying them to natural rivers and by comparing simulated velocity distributions with observed ones obtained with ADCP. Maximum and mean velocities are calculated from observed data to estimate entropy parameter M. Such isovel shape parameters as h and $eta_i$ are estimated by object function based on least squares criterion. In case optimized parameters are applied, Chiu#s velocity distributions fairly well simulate observed ones. By using 14 simulated data sets which have relatively high correlation coefficients, properties of parameters are analyzed and h, $eta_i$ are estimated for velocity-unknown river sections. When estimated parameters are adopted for verification, simulated velocity distributions well reproduce real ones. Finally, calculated discharges display rough agreement with measured data. The results of the present study mean that if parameters related are properly estimated, Chiu#s velocity distribution is likely to reproduce the real one of natural rivers.
 
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ChiuÀÇ 2Â÷¿ø À¯¼ÓºÐÆ÷;¸Å°³º¯¼ö;entropy;2-D velocity distribution;Acoustic Doppler Current Profiler(ADCP);parameters;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.40, no.12, 2007³â, pp.957-968
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200704503862992)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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