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Çѱ¹¼öÀÚ¿øÇÐȸ / v.24, no.4, 1991³â, pp.41-48
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¸¸³»ÀÇ Á¶·ù¼öÄ¡ÇØ¼® - °¡¸·¸¸À» Áß½ÉÀ¸·Î -
( Numerical Simulation on Tidal Currents in a Bay - Application to Gamag Bay - ) |
| À̰ü¼ö;ÀÌ¿µ¼®;ÀÌ»ï³ë; Àü³²´ëÇб³ Åä¸ñ°øÇаú;±¤ÁÖ´ëÇб³ Åä¸ñ°øÇаú, ¿©¼ö¼ö»ê´ëÇÐ ÇØ¾çÅä¸ñ°øÇаú;;
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| º» ¿¬±¸´Â 2Â÷¿øºñ¼±Çü µ¿¼ö¿ªÇйæÁ¤½ÄÀ» ÀÌ¿ëÇÏ¿© °¡¸·¸¸ÀÇ Á¶·ùÀÇ Æ¯¼ºÀ» ÇØ¼®ÇÏ¿´´Ù. »ç¿ëµÈ ±âÃʹæÁ¤½ÄÀº Navier-StokesÀÇ ¿îµ¿ ¹× ¿¬¼Ó¹æÁ¤½ÄÀÌ ÀÌ¿ëµÇ¾ú°í, ¹æÁ¤½ÄÀ» ±¸¼ºÇÏ´Â °¢Ç×ÀÇ Æ¯¼º¿¡ °üÇØ »ó¼¼ÇÏ°Ô »ìÆìº» ÈÄ, ±×°ÍÀ» À½ÀûÂ÷ºÐ¹ýÀ» »ç¿ëÇÏ¿© ¼öÄ¡ÇØ¼®ÇÏ¿´´Ù. ¼öÄ¡¸ðµ¨Àº 2Â÷¿ø ´ÜÃþ¸ðµ¨·Î ±¸¼ºÇÏ¿´À¸¸ç, ¼ö¸³µÈ ¼öÄ¡¸ðµ¨À» °¡¸·¸¸¿¡ Àû¿ëÇÏ¿©, ÇØÀÇ ¾ÈÁ¤¼º°ú ¼ö·Å¼ºÀ» °ËÅäÇÏ¿´À¸¸ç, ¸ðµ¨ÀÇ °á°ú¿Í ÇöÁöÀÇ °üÃøÄ¡¸¦ ºñ±³ÇÏ¿© ¼öÄ¡¸ðµ¨ÀÇ ÀçÇö¼ºÀ» °ËÅäÇÏ¿´´Ù. º» ¼öÄ¡½ÇÇè°á°ú ´ÙÀ½ÀÇ °ÍµéÀÌ Áõ¸íµÇ¾ú´Ù. I) ½ÇÃøÄ¡¿Í ºñ±³Çؼ Á¶·ùÀÇ À¯Çâ, À¯¼Ó¿¡ ´ëÇØ¼ ÀçÇö¼ºÀº ¾çÈ£ÇÏ°Ô ³ªÅ¸³µÀ¸¸ç, II) ¾ÈÁ¤Çظ¦ ¾ò±âÀ§ÇÑ Á¶¼®ÁÖ±â´Â 4ÁÖ±â¾ú´Ù. ¶ÇÇÑ, III) Á¶µµ°è¼ö´Â C=(1/n)$h^{1/6}$À¸·Î ÃæºÐÈ÷ ³ªÅ¸³¾¼ö ÀÖ¾ú´Ù. |
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| This paper describes the characteristics of tidal currents in the Gamag Bay by using the two-dimensional nonlinear hydrodynamic euation. The basic equations are derived by Navier-Stokes momentum equation and continuity equation and its characteristics critically are reviewed, and they are analysed by the implicit finite difference method. The numerical model is constructed two-dimensional(depth-averaged) simple layer model. This paper investigates the stability of solution and convergence of solution in application of the method to Gamag Bay, and the reproducibility of the simulation is also discussed in comparison with the results of field survey. The following items are clarifide through the numerical investigation; i)the reproduc-ibility of tidal range and currents are quite acceptable, comparing with the results of model tests and field data, and ii) tidal cycle for convergent solution is four tidal cycle, also, iii) bottom friction is successfully represented as c=(1/n))$h^{1/6}$. |
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.24, no.4, 1991³â, pp.41-48
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199111920093781)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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