Open Channel Flow

Open channel flow. Compute hydraulic radius, wetted perimeter, and area for circular culvert

  
 

 

Select calculation: 
Diameter, d (L): 
© 2014 LMNO Engineering, Depth, y (L): 
Research, and Software, Ltd. Top Width, T (L): 
http://www.LMNOeng.com Area, A (L2): 
Wetted Perimeter, P (L): 
Hydraulic Radius, R (L): 
Angle, θ (degrees): 

Open channel flow units: (L) means that the variable has units of length (e.g. meters). (L2) means that the variable has units of length squared (e.g. m2). For instance, enter d, y, and T all in meters or all in inches or all in feet.

Open Channel Flow Culvert Geometry Diagram and Equations:

Open Channel Flow Circular Culvert Geometry

Top width, T, is the top width of the water in the pipe. T=0 if the pipe is empty or full. T=d if the pipe is half full.

Open Channel Flow Culvert Geometry Equations

Open channel flow circular culvert geometry calculation does not check for unreasonable inputs. For open channel flow, please enter 0<y<d, 0<T<d, and d>0.

 

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Please contact us for consulting or questions about open channel flow.

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 To: 
LMNO Engineering home page (more calculations)  

Manning Equation Calculator

Culvert Design using Inlet and Outlet Control

Circular Culverts using Manning Equation

Unit Conversions


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