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Çѱ¹¼öÀÚ¿øÇÐȸ / v.42, no.12, 2009³â, pp.1053-1067
2Â÷ ¿ä¼Ò¸¦ ÀÌ¿ëÇÑ 2Â÷¿ø »óÇâ°¡Áß À¯ÇÑ¿ä¼Ò¸ðÇü
( 2-D SU/PG Finite Element Model Using Quadratic Elements )
Ãֽ¿ë;±èº´Çö;±è»óÈ£;ÇѰǿ¬; °æºÏ´ëÇб³ °ø°ú´ëÇÐ °ÇÃà.Åä¸ñ°øÇкÎ;°æºÏ´ëÇб³ °ø°ú´ëÇÐ °ÇÃà.Åä¸ñ°øÇкΠBK21»ç¾÷´Ü;»óÁö´ëÇб³ À̰ø°ú´ëÇÐ °Ç¼³½Ã½ºÅÛ°øÇаú;°æºÏ´ëÇб³ °ø°ú´ëÇÐ °ÇÃà.Åä¸ñ°øÇкÎ;
 
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º» ¿¬±¸ÀÇ ¸ñÀûÀº ÇϵµÀÇ Çü»óÀÌ ºÒ±ÔÄ¢ÇÑ ÀÚ¿¬ÇÏõ¿¡¼­ 2Â÷¿ø È帧 Ư¼ºÀ» ÇØ¼®ÇÏ°í ¿¹ÃøÇϱâ À§ÇØ 2Â÷ ¿ä¼Ò¸¦ ÀÌ¿ëÇÑ Á¤È®Çϰí È¿°úÀûÀÎ »óÇâ°¡Áß À¯ÇÑ¿ä¼Ò¸ðÇüÀÇ °³¹ß¿¡ ÀÖ´Ù. ¸ðÇüÀÇ °³¹ßÀ» À§ÇØ ¼±Çü »ï°¢Çü ¿ä¼Ò, ¼±Çü »ç°¢Çü ¿ä¼Ò¿Í È¥ÇÕ¿ä¼Ò¸¦ Àû¿ëÇÏ¿´°í 2Â÷ »ï°¢Çü, »ç°¢Çü ¿ä¼Ò¿Í È¥ÇÕ¿ä¼Ò¸¦ Àû¿ëÇÏ¿© ¸ðÇüÀ» °³¹ßÇÏ¿´À¸¸ç, Áö¹è¹æÁ¤½ÄÀÇ ¼öÄ¡ÀûºÐ½ÄÀ¸·Î Gauss Quadrature ¹æ¹ýÀ» »ç¿ëÇÏ¿´´Ù. °³¹ßµÈ ¸ðÇüÀÇ Àû¿ë¼º °ËÁõÀ» À§ÇØ ÇÏ»óÀ¶±â°¡ ÀÖ´Â ¼ö·Î, UÀÚÇü ¼ö·Î µî¿¡ ¸ðÀǸ¦ ½Ç½ÃÇÏ¿© ÇØ¼®ÇØ ¹× ½ÇÃøÄ¡¿Í ºñ±³ °ËÅäÇÏ¿´´Ù. ¸ðÀÇ °á°ú 2Â÷ ¿ä¼Ò°¡ ¼±Çü ¿ä¼Ò¿¡ ºñÇØ º¸´Ù Á¤È®ÇÑ ÇØ¸¦ Á¦°øÇÏ´Â °ÍÀ¸·Î ÆÇ´ÜµÇ¾úÀ¸¸ç 2Â÷¿ä¼Ò¸¦ Àû¿ëÇÑ »ó¿ë¸ðÇüÀÎ RMA-2 ¸ðÇü°ú ºñ±³ÇÑ °á°ú º» ¿¬±¸ °³¹ß ¸ðÇüÀÌ º¸´Ù Á¤È®ÇÑ ÇØ¸¦ ³ªÅ¸³»´Â °ÍÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. °³¹ßµÈ ¸ðÇüÀ» ÇâÈÄ ÀÚ¿¬ÇÏõ¿¡ Àû¿ëÇÒ °æ¿ì ±âÁ¸ÀÇ ¸ðÇü¿¡ ºñÇØ Çâ»óµÈ °á°ú¸¦ ¾òÀ» ¼ö ÀÖÀ» °ÍÀ¸·Î ÆÇ´ÜµÈ´Ù.
The objective of this study is to develop an efficient and accurate quadratic finite element model based on Streamline Upwind/Petrov Galerkin (SU/PG) scheme for analyzing and predicting two dimensional flow features in complex natural rivers. For a development of model, quadratic tin, quadrilateral and mixed elements as well as linear tin, quadrilateral and mixed elements were used in the model. Also, this model was developed through reinforcement of Gauss Quadrature which was necessary to integral of governing equation. Several tests for bottom-rising channel and U-type channel were performed for the purpose of validation and verification of the developed model. Such results showed that solutions of second order elements are better accurate and improved than those of linear elements. Results obtained by the developed model and RMA-2 model are compared, and the results for the developed model were better accurate than those of RMA-2 model. In the future if the developed model is applied in natural rivers, it can provide better accurate results than those of existing model.
 
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À¯ÇÑ¿ä¼Ò¸ðÇü;»óÇâ°¡Áß;2Â÷ ¿ä¼Ò;finite element model;streamline upwind;quadratic elements;Gauss Quadrature;
 
Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.42, no.12, 2009³â, pp.1053-1067
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200903538424647)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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