|
|
|
Çѱ¹¼öÀÚ¿øÇÐȸ / v.15, no.1, 1982³â, pp.57-62
|
Preissmann±â¹ý¿¡ ÀÇÇÑ 1Â÷¿ø ºÎÁ¤·ùÀÇ ÇØ¼®
( An Analysis of Unsteady Flow with Preissmann Scheme ) |
| ÀÌÁ¾ÅÂ; º»ÇÐȸÁ¤È¸¿ø ºÎ»ê¼ö»ê´ëÇÐ ÇØ¾ç°øÇаú;
|
|
|
 |
|
| |
| ÃÊ ·Ï |
| º» ¿¬±¸¿¡¼´Â 1Â÷¿ø ºÎÁ¤·ù¸¦ ³ªÅ¸³»´Â Saint VenantÀÇ Æí¹ÌºÐ¹æÁ¤½ÄÀ» PreissmannÀÇ Implicit ±â¹ý¿¡ ÀÇÇÏ¿© À¯ÇÑÂ÷ºÐ¹æÁ¤½ÄÀ» ±¸¼ºÇÑ ÈÄ¿¡ Double sweep ¾Ë°í¸®Á×À» Àû¿ëÇÏ¿© ÇØ¼®ÇÏ´Â ¹®Á¦¸¦ ´Ù·ç¾úÀ¸¸ç, º» Â÷ºÐ¹æÁ¤½ÄÀÇ ¾ÈÁ¤¼º°ú Á¤µµ¸¦ °ËÅäÇÏ¿´°í $C_r$, $ heta$ ¹× Chezy °è¼ö µîÀÇ ¿µÇâÀ» 1Â÷¿ø Seiche ¿îµ¿¿¡ °üÇÑ ¼öÄ¡½ÇÇèÀ» ÅëÇÏ¿© ºÐ¼®ÇÏ¿© º¸¾Ò´Â ¹Ù, ±× ³»¿ëÀº ´ÙÀ½°ú °°´Ù. 1. º¸Á¶°ü°è½ÄÀ» Ȱ¿ëÇÔÀ¸·Î½á Double sweep ¾Ë°í¸®ÁòÀÇ Àû¿ëÀÌ °¡´ÉÇÏ¿´´Ù. 2. ÇØ¼®°á°ú¿¡ °¡Àå Å« ¿µÇâÀ» ¹ÌÄ¡´Â ÀÎÀÚ´Â $C_r$, $ heta$ ¹× Chezy °è¼öÀÎ ¹Ù, ³ôÀº Á¤µµÀÇ °á°ú¸¦ ¾ò±â À§Çؼ $C_r$Àº 1º¸´Ù ³Ê¹« Å« °ªÀº ÇÇÇØ¾ß µÉ °ÍÀ̸ç, $ heta$ÀÇ ÀûÇÕÇÑ ¹üÀ§´Â 0.6<$ heta$<1.0ÀÌ¿´´Ù. 3. º» ¸ðÇüÀº 1Â÷¿ø ÀåÆÄÀÇ ÀüÆÄ¿¡ Àû¿ëÇÏ¿´´ø ¹Ù ¾ÈÁ¤µÈ °á°ú¸¦ º¸¿´´Ù. |
|
| In order to make a numerical modeling for the one dimensional unsteady flow which expressed by Saint Venant partial differential equations, Preissman's implicit schem was used, and it's stability and accuracy was investigated. By introducing recurrence relations make it possible to use double sweep algorithm. Effective parameters to the result were the values of the C$$ and the Chezy coefticient. In order to get numerical solutions whith enough accuracy, C$$ should not be far from the value of1, and when the criteria of the $ heta$ was 0.6<$ heta$<1.0, the rewult was always stable for any condition. This model should be calibrated by real field data, and expected to be developed for the simulation of the river system and to the long wave analysis for one dimensional coastal zone problem. |
| |
| Ű¿öµå |
|
| |
|
|
 |
|
Çѱ¹¼öÀÚ¿øÇÐȸÁö / v.15, no.1, 1982³â, pp.57-62
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1738-9488
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO198211920090375)
¾ð¾î : Çѱ¹¾î |
|
| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
|
|
|
|
|
|