LMNO Engineering, Research, and Software, Ltd.

The fluid flow calculations website
www.LMNOeng.com

  Simple Manning calculators:
•Simple Manning calculator  •Circular culvert geometry
•Non-circular channel geometry  Mannings n Coefficients
•Q = VA 

  Specialty programs:
  Culvert Design using Inlet and Outlet Control
  Gradually varied flow (M1, M2, S2, S3) graph
  Inverted siphon for sewer going under river
  Hydraulic jump     Critical Depth in Circular Culvert
  Bernoulli (pitot tube, dam, sluice gate)
  Discharge from a Tank (steady state)   Time to Empty Tank

  Flumes:
  Parshall (submerged and free flow) 
  Trapezoidal, Rectangular, U (Palmer), Parshall (free flow)

  Weirs:   Rectangular   •V Notch     •Cipoletti

  Compute discharge from water depth at channel drop-off (end depth):
  Circular culvert 
•Rectangular channel   •Triangular channel

Drag Force
  Drag Force on hemispheres, cone, ellipsoid, annular disk, cylinder, rod, cube
  Drag Force - you enter drag coefficient

  Specialty programs:
  Discharge from a Tank (steady state)    Time to Empty Tank
  Pipe network (12 pipes)   Bypass Loop   Force due to Pipe Bend
  Bernoulli (pitot tube, pipe leak, pipe expansion/contraction)
  Water Hammer (enter valve close or opening time) 
  Water Hammer (instantaneous valve closure)

  Venturi, Nozzle, and Orifice Flow meters:
  Venturi (liquids)   Nozzle (liquids)
  Orifice (liquids, D<5cm)  Orifice (liquids, D>5cm)
  Orifice (gases, D<5cm)   Orifice (gases, D>5cm) 
  (D is pipe diameter)

  Properties of gases:
  Specific gravity conversions and Density using ideal gas law 
  Gas flow conversions (mass, standard, actual)
•Molecular Weight     •Gas Viscosity

  Simple programs:
•Non-Circular to Circular Pipe Conversions
•Energy Equation     •Static Pressure from elevation
•Minor Losses (valves, etc.)    •Q = VA 
•Major Losses (pipe friction). Darcy-Weisbach
•Major Losses (pipe friction). Hazen-Williams
•Surface Roughness and Minor Loss Coefficients
•Moody Friction Factor for Darcy-Weisbach 
•Equivalent Length of Pipe Calculations
 

  Groundwater:
  Porous bed (packed bed, permeameter)
  Hydraulic gradient and flow direction from x, y, head data
  3-D Slug injection: advection, dispersion
  1-D Step injection: advection, disp, retardation

Videos / Movies
  Friction loss and analysis
  Tank discharge and analysis

Newsletters
(Fluid flow articles written by Ken Edwards, Ph.D., P.E., Owner of LMNO Engineering)
1999  2000  2001  2002  2003  2004  2005  2006, 2007, 2008, 2009, 2010, 2012  2013