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Çѱ¹¼öÀÚ¿øÇÐȸ / v.27, no.2, 1994³â, pp.73-83
¼öÄ¡¸ðÇü¿¡ ÀÇÇÑ ¿¬¾ÈÇØ¿ª ÇØ¼ö¿îµ¿ÀÇ ºÐ¼®
( Analysis of the Hydraulic Behaviour in the Nearshore Zone by a Numerical Model )
ÀÌÈñ¿µ;±èö; ¼­¿ï½Ã¸³´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú;¼­¿ï½Ã¸³´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú ¹Ú»ç°úÀå;
 
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È®»êÇö»ó, Ç¥»çÀ¯µ¿ ¹× Àΰ£ÀÇ ¿©·¯ Ȱµ¿ÀÌ ½ÇÁ¦ ¿¬¾ÈÇØ¿ª¿¡¼­ ÀϾ¹Ç·Î ¿¬¾ÈÇØ¿ª ÇØ¼ö¿îµ¿ÀÇ ¹°¸®Àû Ư¼ºÀ» ÆÄ¾ÇÇϰí ÇØ¼®ÇÏ´Â °ÍÀº Áß¿äÇÑ Àǹ̸¦ Áö´Ñ´Ù. º» ¿¬±¸¿¡¼­´Â ¿¬¾ÈÇØ¿ª¿¡¼­ÀÇ ÆÄ¶ûº¯Çü°ú Æò±ÕÇØ¼öÀ§ º¯µ¿ ±×¸®°í ¿¬¾ÈÀ¯¼Ó ºÐÆ÷¾ç»ó¿¡ ´ëÇØ ¿©·¯ ÀÎÀÚµéÀÌ ¹ÌÄ¡´Â ¿µÇâÀ» 2Â÷¿ø À¯ÇÑÂ÷ºÐ ¸ðÇü(ADI, Up-wind)À» ÀÌ¿ëÇÏ¿© ºÐ¼®ÇÏ¿´´Ù. °è»ê°á°ú·Î´Â ¼öÄ¡¸ðÇüÀ» ÇØÀú°æ»ç°¡ ÀÏÁ¤ÇÑ 2Â÷¿ø ÁöÇü¿¡ Àû¿ëÇÏ¿© ÇØÀú°æ»ç, ÀÔ»çÆÄ°í, ÆÄÇâ°¢, ÆÄÁÖ±â, ¸¶Âû°è¼ö ¹× ¼öÆòÈ®»ê°è¼ö°¡ ¿¬¾ÈÇØ¿ª ƯÈ÷ ¼âÆÄ´ë³»¿¡¼­ ÆÄ¶ûº¯Çü, Æò±ÕÇØ¼öÀ§ º¯µ¿ ¹× ¿¬¾ÈÀ¯¼Ó ºÐÆ÷¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ºÐ¼®ÇÏ¿´´Ù.
The unproper development of the nearshore zone can enhance the diffusion of pollutant in the nearshore zone resulting in unbalanced sediment budget of beach which causes alteration of beach topography. Therefore, it is required to predict the effects of the envirnmental change quantitatively. In this paper, the depth-averaged and time-averaged energy balance equation is selected to acount for the wave transformation such as refraction, shoaling effect, the surf zone energy disipation, wave breaking index and bore, due to wave breaking in the shore region.(Numerical solutions are obtained by a finite difference method, ADI and Upwind. For the calculation of the wave-induced current, the unsteady nonlinear depth-averaged and time-averaged governing equation is derived based on the continuity and momentum equation for imcompressible fluid.) Numerical solutions are obtained by finite difference method considering influences of factors such as lateral mixing coefficient, bed shear stress, wave direction angle, wave steepness, wave period and bottom slope. The model is applied to the computation of wave transformation, wave-induced current and variation of mean water leel on a uniformly sloping beach.
 
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.27, no.2, 1994³â, pp.73-83
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199411920094897)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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