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Çѱ¹¼öÀÚ¿øÇÐȸ / v.31, no.4, 1998³â, pp.439-448
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( Applications of Graph Theory for the Pipe Network Analysis ) |
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| ´ë±Ô¸ðÀÇ ¹è¼ö°ü¸Á ½Ã½ºÅÛ¿¡¼ À¯·®Çؼ®À» À§ÇÑ ±â¹ýµéÀÌ ¸¹ÀÌ ÀÖÁö¸¸ °¡Àå ³Î¸® »ç¿ëµÇ°í ÀÖ´Â ±â¹ýÀº ¼±ÇüÈ ±â¹ýÀÌ´Ù. ÀÌ ¹æ¹ýÀº ¿¬¼Ó¹æÁ¤½Ä°ú ¿¡³ÊÁö ¹æÁ¤½ÄÀ» ¿¬¸³ÇÏ¿© ÇØ¼®ÇϹǷΠÀÌ·ÐÀûÀ¸·Î´Â °£´ÜÇϳª ½ÇÁ¦ ½Ã½ºÅÛ¿¡ Àû¿ëÀ» À§Çؼ´Â ¿¬¸³¹æÁ¤½Ä ÇØ¼®½Ã »ý¼ºµÇ´Â °è¼ö¸ÅÆ®¸¯½ºÀÇ ´ë°¢Çà·Â¿¡ '0'ÀÌ ¹ß»ýÇÏ´Â µî ¸Å¿ì Å« ÀÌ»êÈµÈ °è¼ö ¸ÅÆ®¸¯½ºÀÇ Ã³¸®°¡ ¹®Á¦°¡ µÇ¾ú´Ù. º» ¿¬±¸¿¡¼´Â ill-condition °è¼ö¸ÅÆ®¸¯½ºÀÇ ¹ß»ýÀ» ¹èÁ¦Çϱâ À§ÇØ µµÇÐÀÌ·ÐÀ¸·ÎºÎÅÍ ¼±Çüµ¶¸³ÀûÀÎ ÆóÇÕȸ·Î¸¦ ã´Â ±â¹ýÀ» »ó¼ö°ü¸ÁÇØ¼®¿¡ Àû¿ëÇÏ¿© ¼±Çüȱâ¹ýÀÇ positive-definite °è¼ö¸ÅÆ®¸¯½º¸¦ ¸¸µå´Â ±â¹ýÀ» °³¹ßÇÏ¿´´Ù. °³¹ßµÈ ¾Ë°í¸®µëÀÇ Àû¿ë¼ºÀ» ½ÃÇèÇϰíÀÚ 22°³ °¡»ó°ü·Î ¹× 142°³ °ü·Î¸¦ °¡Áø ´ë±¸ ÀαÙÀÇ ½ÇÁ¦ °ü¸ÁÀڷḦ ÀÌ¿ëÇÏ¿© À¯·®Çؼ®À» ½Ç½ÃÇÏ¿´´Ù. À¯·®Çؼ® °á°ú º» ¾Ë°í¸®µëÀÌ Àû¿ëµÈ ¸ðÇü¿¡¼´Â °¡»ó°ü¸Á ¹× ½ÇÁ¦°ü·Î¿¡¼ ¼ö·ÅÀÇ ½ÇÆÐ¾øÀÌ ¿øÈ°ÇÏ°Ô °è»êÀÌ ÀÌ·ç¾îÁö°í ÀÖ¾ú´Ù. º» ¿¬±¸°á°ú´Â °ü·Î³» Á¤»ó»óÅ À¯·®Çؼ®À» À§ÇØ È¿À²ÀûÀ¸·Î ÀÌ¿ëµÉ °ÍÀÌ ±â´ëµÈ´Ù. |
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| There are many methods to calculate steady-state flowrate in a large water distribution system. Linear method which analyzes continuity equations and energy equations simultaneously is most widely used. Though it is theoretically simple, when it is applied to a practical water distribution system, it produces a very sparse coefficient matrix and most of its diagonal elements are to be zero. This sparsity characteristic of coefficient matrix makes it difficult to analyze pipe flow using the linear method. In this study, a graph theory is introduced to water distribution system analysis in order to prevent from producing ill-conditioned coefficient matrix and the technique is developed to produce positive-definite matrix. To test applicability of developed method, this method is applied to 22 pipes and 142 pipes system located nearby Taegu city. The results obtained from these applications show that the method can calculate flowrate effectively without failure in converage. Thus it is expected that the method can analyze steady state flowrate and pressure in pipe network systems efficiently. Keywords : pipe flow analysis, graph theory, linear method. |
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| Ű¿öµå |
| »ó¼ö°ü¸Á ÇØ¼®;µµÇÐ ÀÌ·Ð;¼±ÇüÈ ±â¹ý;pipe flow analysis;graph theory;linear method; |
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Çѱ¹¼öÀÚ¿øÇÐȸ³í¹®Áý / v.31, no.4, 1998³â, pp.439-448
Çѱ¹¼öÀÚ¿øÇÐȸ
ISSN : 1226-6280
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811920101124)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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