App description

Calculate the average speed

<img src="http://drr.ikcest.org/static/upload/65/65a9fae8-ebd6-11e9-b87a-00163e0618d6_m.jpg" />

V = average speed

C = Xie coefficient

Rh = hydraulic radius

S = slope

Usage example

Input data:

Xie Cai coefficient: 25

Hydraulic radius: 30

Line slope: 15

Click "Calculate" to output data

Average speed: 530.330 m / s