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Çѱ¹¼öÀÚ¿øÇÐȸ / v.30, no.3, 1997³â, pp.201-210
³­·ù¸ðµ¨À» ÀÌ¿ëÇÑ °³¼ö·Î ±ÞÃà¼ÒºÎ È帧ÀÇ ¼öÄ¡ÇØ¼®
( A Numerical Analysis of Flow through Open Channel Constrictions using Turbulence Model )
ÃÖÈï½Ä; »óÁö´ëÇб³ À̰ø°ú´ëÇÐ Åä¸ñ°øÇаú;
 
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$textsc{k}$-$varepsilon$³­·ù¸ðµ¨À» ÀÌ¿ëÇÑ °³¼ö·Î ±ÞÃà¼ÒºÎ È帧ÀÇ ÇØ¼®À» À§ÇÑ ¼öÄ¡¸ðÇüÀ» °³¹ßÇÏ¿´°í, ±× ¼öÄ¡½ÇÇè°á°ú´Â ½ÇÇè°á°ú¿Í Àß ÀÏÄ¡ÇÏ¿´´Ù. ÀÌ´Â ³­·ù¸ðµ¨¿¡ ÀÇÇÑ ÀûÀýÇÑ ³­·ù ¿ÍÁ¡¼º°è¼öÀÇ »êÁ¤À̶ó »ý°¢µÈ´Ù. À¯ÇÔ¼ö ¹× À¯¼ÓºÐÆ÷ÀÇ ºÐ¼®À» ÅëÇÑ Ãà¼ÒºÎ Åë°úÈÄ ±Þº¯È­ È帧ÀÇ ¼ö¸®Æ¯¼ºÀ» ºÐ¼®ÇÏ¿´°í, ¶ÇÇÑ ³­·ù ¿ÍÁ¡¼º°è¼öÀÇ ºÐÆ÷¸¦ ºÐ¼®ÇÏ¿´´Ù. µû¶ó¼­ õ¼ö¹æÁ¤½ÄÀÇ Á¡¼ºÇ׿¡ °æÇèÀûÀÎ À¯È¿Á¡¼º°è¼öÀÇ µµÀÔº¸´Ù´Â È帧ÀÇ ¾ç»ó°ú Àå¼Ò¿¡ µû¶ó¼­ º¯È­ÇÏ´Â ³­·ù¿ÍÁ¡¼º°è¼öÀÇ »êÁ¤¿¡ ÀÇÇÑ ±Þº¯È­È帧ÀÇ ÇØ¼®ÀÌ ÇÊ¿äÇÏ´Ù.
To analyze the flow through open-channel constrictions using $kappa$-$varepsilon$ turbulence mode, a numerical model is developed. The simulated results agree well with existing experimental data which attributes to the adequate input of turbulent eddy-viscosity by turbulence model. A stream function and velocity distributions enable the analysis of flow characteristics at the downstream of constriction. Turbulent eddy viscosities over channel are spatially varied with stream pattern. For the evaluation of rapidly varied flow, the eddy-viscosity input by turbulence model is required instead of the empirical effective viscosity to solve a shallow water equation.
 
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.30, no.3, 1997³â, pp.201-210
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199711920100163)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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ȸ»ç¼Ò°³ ±¤°í¾È³» ÀÌ¿ë¾à°ü °³ÀÎÁ¤º¸Ãë±Þ¹æÄ§ Ã¥ÀÓÀÇ ÇѰè¿Í ¹ýÀû°íÁö À̸ÞÀÏÁÖ¼Ò ¹«´Ü¼öÁý °ÅºÎ °í°´¼¾ÅÍ
   

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