矩形堰(rectangular weir)

 

Google Play 商店 連結網址:

 明渠水理計算_曼寧公式

https://play.google.com/store/apps/details?id=com.yuchihung.manning

例題

已知條件：H=0.3m ， P=1m ，B=10m

 

依據Rehbock(1929)：

H/P=0.3/1=0.3<5(適用條件)

Cd=0.611+0.08*H/P=0+611+0.08*0.3/1=0.635

q=2/3*SQRT(2*g)*Cd*H^(3/2)=0.3081(cms/m)

Q=B*q=3.081(cms)

Google Play Store link URL:

 Open channel hydraulic calculation_Manning formula

https://play.google.com/store/apps/details?id=com.yuchihung.manning

example

Known conditions: H=0.3m, P=1m, B=10m

 

According to Rehbock (1929):

H/P=0.3/1=0.3<5 (applicable conditions)

Cd=0.611+0.08*H/P=0+611+0.08*0.3/1=0.635

q=2/3*SQRT(2*g)*Cd*H^(3/2)=0.3081(cms/m)

Q=B*q=3.081(cms)