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Çѱ¹¼öÀÚ¿øÇÐȸ / v.27, no.1, 1994³â, pp.101-109
¼ö¸®±¸Á¶¹° ÇÏ·ùºÎ¿¡¼­ÀÇ VortexÀÇ Æ¯¼º ¹× ¼¼±¼·® »êÁ¤¿¡ °üÇÑ ¿¬±¸
( Study on vortex Characteristics and Estimation of Vortex Erosion at Downstream Part of Hydraulic Structure )
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º» ¿¬±¸¿¡¼­´Â ¹è¼ö°©¹®, º¸µîÀÇ ¼ö¸®±¸Á¶¹° ÇÏ·ùºÎ¿¡¼­ ¹ß»ýµÇ´Â ¿Í¿¡ ÀÇÇÑ 2Â÷¼±±¼ÀÇ ¹°¸®Àû Ư¼ºÀ» ±Ô¸íÇϰí, ¿ÍÀÇ Æò±Õ ¸¶Âû¼Óµµ¸¦ ¿¡³ÊÁö º¸Á¸¹ýÄ¢¿¡ ÀÇÇØ »êÃâÇÏ¿´´Ù. ¶ÇÇÑ ¿Í¿¡ ÀÇÇØ ¹ß»ýµÇ´Â ¼±±¼·®À» ¸¶Âû¼Óµµ¿¡ ÀÇÇÑ ¼Ò·ù·Â ¹× ³­·ù¿¡ ÀÇÇÑ ¾ç·ÂÀÇ Ç×À¸·Î½á Á¤·®ÀûÀ¸·Î »êÃâÇÏ¿´´Ù. ºÐ¼® °á°ú ¼ö¸®±¸Á¶¹° ÇÏ·ùºÎ¿¡¼­ ¹ß»ýµÇ´Â ¿Í´Â ÇÏõ »çÁÖ µÞ¸é¿¡¼­ ¹ß»ýµÇ´Â ±×°Í¿¡ ºñÇØ °­µµ°¡ ¼¼°í ²÷ÀÓ¾øÀÌ ¹ß»ýµÇ´Â ´ë±Ô¸ð ³­·ù¼ºÀ» Áö´Ï°í ÀÖÀ½À» ¾Ë ¼ö ÀÖ¾ú´Ù. ¶ÇÇÑ ¿ÍÀÇ ¸¶Âû¼Óµµ´Â ¹°¹ÞÀÌ ³¡´ÜÀÇ À¯¼ÓÀ¸·Î ³ªÅ¸³¾ ¼ö ÀÖÀ¸¸ç, µû¶ó¼­ ÇÏ»óÀÔÀÚÀÇ ¼ºÁú°ú È帧ÀÇ À¯¼ÓÀ» ¾Ë¸é ¼±±¼·®À» »êÁ¤ÇÒ ¼ö ÀÖ´Â ¹æ¹ýÀ» Á¦½ÃÇÏ¿´´Ù.
Characteristics of the vortex structure and the secondary scour at downstream part of the hydraulic structure such as drainage sluice or spillway ere studied. Mean shear velocity in the scour hole could be derived by the theory of energy conservation and the amount of a vortex erosion could be obtained using entrainment equation for given value of a shear velocity. Comparison of erosion rates with others showed a large value at low shear velocity due to the continuous and strong upward flow of the macroturbulence different from the conventional vortex formed in the lee-side of a sand ripple. For a design purpose, if the flow depth at the end of an apron and the properties of bed material are given, the amount of vortex erosion can be known.
 
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Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.27, no.1, 1994³â, pp.101-109
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199411920094793)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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