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Çѱ¹¼öÀÚ¿øÇÐȸ / v.32, no.3, 1999³â, pp.237-246
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ºÎÁ¤·ù ÇØ¼®À» À§ÇÑ Hermite-Collocation ±â¹ýÀÇ Àû¿ë
( Application of Hermite-Collocation Method for Unsteady Flow Analysis ) |
| ÇѰǿ¬;ÀÌÀ»·¡;¹ÚÀçÈ«; °æºÏ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;°æºÏ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú;¼¼¸í´ëÇб³ Åä¸ñ°øÇаú;
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| ÀÚÀ¯¼ö¸é È帧ÀÇ ¸ðÀǸ¦ À§ÇÑ À¯ÇÑ¿ä¼Ò¸ðÇüÀÌ µ¿¼ö¿ªÇÐÀû È帧¹æÁ¤½Ä°ú collocation À¯ÇÑ¿ä¼Ò¹ý¿¡ ÀÇÇØ ¸ðÀÇÇÏ¿´´Ù. collocation ±â¹ýÀº Hermite ´ÙÇ×½ÄÀ» °¡Áø Á¢ÇÕÁ¡¿¡¼ Àû¿ëÀÌ µÇ¸ç, ¸ÞÅ©¸¯½º ¹æÁ¤½ÄÀº skyline ±â¹ý¿¡ ÀÇÇØ ÇØ¼®ÇÏ¿´´Ù. º» ¿¬±¸ ¸ðÇüÀº ¸¶ÂûÀÌ ¾ø´Â ¼öÆò¼ö·Î¿¡¼ÀÇ Á¤»óµµ¼ö, ºñ¼±Çü Ç¥¸éÀüÆÄ ±×¸®°í ´ï ÆÄ±«Çؼ®¿¡ Àû¿ëÇÏ¿´´Ù. °è»ê°á°ú Bubnov-Galerkin °ú Petrov-Galerkin ±â¹ý°ú ºñ±³ÇÏ¿´´Ù. ½ÇÁ¦ÇÏõ¿¡ ´ëÇÑ Àû¿ë¼ºÀ» °ËÅäÇϱâ À§Çؼ ºÏÇѰ À¯¿ª¿¡ Àû¿ëÇÏ¿© ÇØ¼®ÇÏ¿´´Âµ¥, °è»ê°á°ú´Â À¯·®¼ö¹®°î¼±¿¡ ÀÖ¾î¼ ±âÁ¸ÀÇ DWOPER ¸ðÇüÀÇ °á°ú¿Í ÀÏÄ¡ÇÏ¿´´Ù. Collocation ±â¹ýÀº °³¼ö·Î È帧¿¡¼ÀÇ Á¡º¯ ¹× ±Þº¯ ºÎÁ¤·ùÈ帧À» ¸ðÀÇÇϱâ À§Çؼ ÀûÀýÇÑ ±â¹ýÀÓÀ» È®ÀÎÇÒ ¼ö ÀÖ¾ú´Ù. |
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| A finite element model is studied to simulate unsteady free surface flow based on dynamic wave equation and collocation method. The collocation method is used in conjunction with Hermite polynomials, and resulting matrix equations are solved by skyline method. The model is verified by applying to hydraulic jump, nonlinear disturbance propagation and dam-break flow in a horizontal frictionless channel. The computed results are compared with those by Bubnov-Galerkin and Petrov-Galerkin methods. It is also applied to the North Han River to simulate the floodwave propagation. The computed results have good agreements with those of DWOPER model in terms of discharge hydrographs. The suggested model has proven to be one of the promising scheme for simulating the gradually and rapidly varied unsteady flow in open channels. |
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| Ű¿öµå |
| ºÎÁ¤·ù;collocation ±â¹ý;À¯ÇÑ¿ä¼ÒÇØ¼®;Hermite ´ÙÇ×½Ä;unsteady flow;collocation method;finite element analysis;Hermite polynomial; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.32, no.3, 1999³â, pp.237-246
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199911920063105)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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