Water Velocity Calculator

Water Velocity Calculator:

Enter the values of water Flow Rate, WFR_(m3/s) and cross-sectional Area, A_(m2) to determine the value of water Velocity, V_w(m/s).

Enter Water Flow Rate :		m3/s
Enter Cross-Sectional Area :		m/s2
Result – Water Velocity :		m/s

Water Velocity Formula:

Water velocity is defined as the speed at which water flows through a given area.

Water Velocity, V_w(m/s) in metres per second, is calculated by dividing the water Flow Rate, WFR_(m3/s) in cubic metres per second by the cross-sectional Area, A_(m2) in square metres.

Water Velocity, V_w(m/s) = WFR_(m3/s) / A_(m2)

V_w(m/s) = water velocity in metres per seconds, m/s.

WFR_(m3/s) = water flow rate in cubic metres per seconds, Ss.

A_(m2) = cross-sectional area in square metres, m².

Water Velocity Calculation:

1.A large irrigation channel has a water flow rate of 2 m³/s and a cross-sectional area of 4 m². Calculate the velocity of water in the channel.

Given: WFR_(m3/s) = 2m³/s, A_(m2) = 4m².

Water Velocity, V_w(m/s) = WFR_(m3/s) / A_(m2)

V_w(m/s) = 2 / 4

V_w(m/s) = 0.5m/s.

2.If the water flow rate (WFR) is 120m³/s and the water velocity (Vw) through a pipe is 3m/s, we can find the cross-sectional area of the pipe as follows:

Given: WFR_(m3/s) = 120m³/s, V_w(m/s) = 3m/s.

Water Velocity, V_w(m/s) = WFR_(m3/s) / A_(m2)

A_(m2) = WFR_(m3/s) / V_w(m/s)

A_(m2) = 120 / 3

A_(m2) = 40m².