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Most efficient section : ウィキペディア英語版 | Most efficient section
A channel section is considered to be the most economical or most efficient when it passes a maximum discharge for given cross section area,resistance cofficient and bottom slope.〔http://nptel.iitm.ac.in/courses/IIT-MADRAS/Hydraulics/pdfs/Unit22/22_4.pdf〕 From the equation of continuity it is evident that for area of cross section being constant,discharge is maximum when the velocity of discharge is maximum.and from Chézy formula and Manning formula for a certain value of slope and surface roughness velocity is maximum when the hydraulic radius is maximum.and if we take area as constant hydraulic radius is constant if the wetted parameter is minimum. ==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Most efficient section」の詳細全文を読む
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