How do you calculate sheet flow?

How do you calculate sheet flow?

The calculation of overland flow (sheet flow) length by equation 1 requires the sum of stream lengths and area of the watershed to be in consistent units. For example, if Dd is 48,900 feet, the area of the watershed also should be in square feet or 206 acres times 43,560 square feet per acre.

How do you calculate rainfall flow?

Q = C x I x A/96.23, where,

1. Q is the storm-water run-off in gallons per minute (GPM)
2. C is the runoff coefficient,
3. I is the rainfall intensity in inches per hour.
4. A is the drainage area in sq. ft.
5. 23 is a conversion factor when you want the flow rate in GPM and your drainage area is in sq. ft.

What is sheet flow drainage?

It is a term used in the hydrology and civil engineerng fields that simply refers to water flow or drainage over surfaces (either paved or unpaved, planted or unplanted), rather than being diverted into channels, culverts, or pipes.

How do you calculate peak flow in hydrology?

The Rational Formula is expressed as Q = CiA where: Q =Peak rate of runoff in cubic feet per second C =Runoff coefficient, an empirical coefficient representing a relationship between rainfall and runoff.

How to calculate flow velocity?

The formula used by this calculator to calculate the flow velocity is: v = Q / A . Symbols. v = Flow velocity; Q = Volumetric flow rate; A = Cross-sectional area; n.b. This formula assumes uniform flow conditions within the entire cross-sectional area, without any friction losses near to surfaces. Volumetric Flow Rate Measured

How do you calculate fluid velocity?

For a fluid with known density and measured difference between stagnation pressure and static pressure (ΔP), as measured with a pitot tube, the fluid velocity can be calculated with the equation: V = (2ΔP/ρ) 1/2.

What is the equation for flow velocity?

The Flow Velocity is then determined with the following equation: V = Flow Velocity in feet per minute. √= Square root of the number to the right . Example: Measuring a Velocity Pressure of .75” W.C. equals a Flow Velocity of 3,468 Ft/Min.

What is the difference between flow rate and flow velocity?

Flow rate is the volume per unit of time, whereas flow velocity is the distance per unit of time. Excessive flow velocity can cause oil aeration, power loss, system overheating and other problems.