Architecture
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¿øÇü(´Ü¸é, circular cross-section) °ü¼ö·ÎÀÇ ¼ö¸®¹Ý°æ(°æ½É, hydraulic radius) °è»êÇϱâ

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¼ö¸®¹Ý°æ ȤÀº °æ½É Rh´Â È帧´Ü¸éÀû A¸¦ Á¢¼öÁÖº¯Àå P·Î ³ª´©¾îÁØ °ªÀ¸·Î ´ÜÀ§Æø(±æÀÌ)´ç È帧´Ü¸éÀûÀ» ³ªÅ¸³½´Ù.

Áï, Rh = A/P ·Î °è»êÇÒ ¼ö ÀÖ´Ù.

±×¸²°ú °°ÀÌ Á÷°æ D (m) ÀÎ ¿øÇü ´Ü¸éÀÇ °æ¿ì ¼ö¸®¹Ý°æ Rh´Â ´ÙÀ½°ú °°Àº ½ÄÀ¸·Î °è»êÇÒ ¼ö ÀÖ´Ù.

Rh = (¥ð/4)*D^2 / (¥ð*D) = D/4

*** Âü°í¹®Çå[References] ***

https://en.wikipedia.org/wiki/Manning_formula#Hydraulic_radius
Rh = D/4
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º¯¼ö¸í Variable º¯¼ö°ª Value º¯ ¼ö ¼³ ¸í Description of the variable


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