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Çѱ¹¼öÀÚ¿øÇÐȸ / v.41, no.2, 2008³â, pp.197-212
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µµ½ÃÇÏõÀÇ ±³°¢ ¹× Ⱦ´Ü ¿ù·ùÇü ±¸Á¶¹°¿¡ ÀÇÇÑ ¼ö¸®¿µÇ⠺м®
( Analysis of Hydraulic effects on Piers and Transverse Overflow Type Structures in Urban Stream ) |
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ÃÖ±Ù ÇÏõÀÇ Èå¸§ÇØ¼® ºÐ¾ß¿¡¼´Â ¼öÀ§ ¹× Çϻ󺯵¿ ¾ç»ó°ú ¿À¿°µÈ Áö·ùÀ¯ÀÔÀ¸·Î ÀÎÇÑ º»·ù¿¡¼ÀÇ À¯¼ÓºÐÆ÷ ¾ç»ó ¹× È¥ÇÕ°úÁ¤ µîÀÇ ½ÇÁ¦ÀûÀÎ ¹®Á¦¸¦ ÇØ°áÇÒ ¼ö ÀÖ´Â 1, 2Â÷¿øÀû ÇØ¼®ÀÌ ÀÌ·ç¾îÁö°í ÀÖÀ¸¸ç, ÀÌ´Â º¹ÀâÇÑ ÇÏõÀ» ±ÕÀÏÈµÈ ¸ð¾ç°ú ´Ü¼øÈµÈ ¹æÁ¤½ÄÀ¸·Î Àϰý Àû¿ëÇÔÀ¸·Î½á ¸¹Àº ÇѰèÁ¡À» ³ªÅ¸³»°í ÀÖ´Ù. º» ¿¬±¸¿¡¼´Â ¼¿ï½Ã °ü³» Áö¹æ 2±Þ ÇÏõÀÎ ¿ìÀÌõ ½ÃÇèÀ¯¿ªÀ» ´ë»óÀ¸·Î ÇÏõÀÇ ¹°¸®ÀûÀΠƯ¼º º¯È¿¡ µû¸¥ Èå¸§ÇØ¼®À» ¼öÇàÇϱâ À§ÇÏ¿© 3Â÷¿ø RANS (Reynolds Averaged Navier-Stokes Equation)¸¦ Áö¹è¹æÁ¤½ÄÀ¸·Î ÇÏ´Â CFD (Computational Fluid Dynamics)¸ðÇüÀÎ FLOW-3D¸¦ ÀÌ¿ëÇÏ¿´°í, ${kappa}-{varepsilon}$, RNG (Renormalized Group) ${kappa}-{varepsilon}$, LES (Large Eddy Simulation) µîÀÇ ³·ù¸ðÇüÀ» Àû¿ëÇÏ¿© °¢°¢ÀÇ ¼öÄ¡¸ðÀÇ °á°ú¸¦ ºñ±³ ºÐ¼® ÇÏ¿´´Ù. ¶ÇÇÑ, ¼öÄ¡ ÇØ¼®À» ÅëÇÑ ±³·® ¼³Ä¡ºÎ¿Í ÇÏ·ù Ⱦ´Ü¿ù·ùÇü ±¸Á¶¹°¿¡¼ÀÇ ³·ù¿µÇâ ¹× À¯¼ÓºÐÆ÷, ¼öÀ§ ¾Ð·ÂºÐÆ÷, ¿Í·ùƯ¼º µîÀ» ºÐ¼®ÇÏ¿´°í, ±¸Á¶¹°ÀÇ Ã¶°Å¿¡ ÀÇÇÑ ¿µÇâÀ» ºñ±³ÇÏ¿© ºÐ¼®ÇÏ¿´´Ù. ÀÌ´Â ÇâÈÄ µµ½ÃÇÏõÀÇ ±â´ÉÀ» »ó½ÇÇÑ È¾´Ü ±¸Á¶¹° ö°Å¿¡ ÀÇÇÑ Àå±âÀûÀÎ Çϻ󺯵¿°ú Åä»çÀÇ ÅðÀû, ¼¼±¼ ¹× ¼öÁú¾ÇÈ µîÀÇ ¿µÇâÀ» ÆÄ¾ÇÇØ º¼ ¼ö ÀÖ´Â ±âÃÊÀÚ·á·Î Ȱ¿ëµÉ ¼ö ÀÖÀ¸¸®¶ó »ç·áµÈ´Ù. |
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Recently, stream flow analysis has been accomplished by one or two dimensional equations and was applied by simple momentum equations and fixed energy conservations which contain many condition limits. In this study, FLOW-3D using CFD (Computational Fluid Dynamics) was applied to stream flow analysis which can solve three dimensional RANS (Reynolds Averaged Navier-Stokes Equation) control equation to find out physical behaviors and the effect of hydraulic structures. Numerical simulation accomplished those results was compared by using turbulence models such as ${kappa}-{varepsilon}$, RNG (Renormalized Group) ${kappa}-{varepsilon}$ and LES (Large Eddy Simulation). Numerical analysis results have been illustrated by the turbulence energy effects, velocity of flow, water level pressure and eddy flows around the piers and transverse overflow type structures. These results will be able to used by basis data that catch hold of effects on long-term bed elevation changes, sediment accumulations, scours and water aggravations by removal of obsolete transverse over flow type structures in urban stream. |
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Ű¿öµå |
³·ù ¸ðÇü;Ⱦ´Ü Àª·ùÇü ±¸Á¶¹°;µµ½ÃÇÏõ;FLOW-3D;Turbulence Model;Transverse overflow type structure;Urban stream; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.41, no.2, 2008³â, pp.197-212
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200807341722631)
¾ð¾î : Çѱ¹¾î |
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³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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