Pipe Flow Expert is our
premier software application for designing and analyzing complex
pipe networks where the flows and pressures must be balanced to
solve the system.
Features include:
An Intuitive User Interface that is bestinclass & easy to use
with Isometric 3D drawing capability...
and customized PDF report generation for results documentation!
A Robust Calculation Engine that will solve complex pipe networks
Pressure Loss calculated using the DarcyWeisbach method
Friction Factors calculated using the ColebrookWhite equation
Modelling of up to 1000 pipes in the full version.
A Fluid Database with common liquid and gas data
A Pipe Database with common pipe materials and sizes
A Fittings Database with common valve and fitting data
The DarcyWeisbach method provides accurate results for
noncompressible fluids (including most process fluids). It also
provides satisfactory results for compressible fluids when the
pressure drop through the pipe system is less than 40% of the inlet
pressures.
Pipe Flow Expert Lite 
Up to 25 pipes
Pipe Flow Expert Lite is our excellent value program for solving
pipe networks with up to 25 pipes where the flows and pressures must
be balanced to find the steady state condition.
Features include:
Same features as the full version except only models up to 25 pipes.
An Intuitive User Interface that is bestinclass & easy to use
Same pipe database, fitting database and fluid database as the full
version.
Pipe Flow Expert Lite uses the Darcy Weisbach equation to calculate
friction losses in the pipes (and the Colebrook White equation to
determine the friction factor that is used). The pipe flo and
pressure drops throughout the system are displayed on the drawing
and this information and additional detail about entry pressures,
exit pressures, friction factors, friction losses, fitting losses,
component losses, pump head added, NPSH available, volume, velocity,
elevations, surface pressures, etc, can also be viewed in
spreadsheet format and exported to excel as required.
Our Pipe Flow Expert software can model pipe networks and calculate
the flow and pressure throughout a system with different pipe sizes
and pipe materials, supply and discharge tanks, loopedsystems,
pumps, valves, flow controls, system demands, heat exchangers and
other component.
The pipeline system is modeled by drawing the join points and the
connecting pipes on a drawing pane. Horizontal, vertical or sloping
lines can be used to connect one node to another node.
The physical data describing the system is entered by the user and
typically includes:
The internal size, internal roughness and length of each pipe.
The elevation of each pipe join point (node).
The Inflow and the Outflow at each join point (if applicable).
The elevation, liquid level and surface pressure data for each tank.
The performance data for each pump (the pump characteristic curve).
Data input boxes are located at the left hand side of the drawing
pane. These input boxes will display the data for the currently
selected node or pipe and may be used to amend the current data. The
data for a node, pipe, component, pump, etc. can be amended at any
point during the design (drawing) process.
Once the design has been completed, the system can be analyzed and
the flow and pressure results can be calculated. Estimates for the
outflows are used to set an initial flow rate in each pipe, with
the total inflow to each join point matching the total outflow
from each join point. The pressure losses within the system are
calculated using friction factors obtained from the ColebrookWhite
equation, and the friction pressure loss for each pipe is obtained
from the DarcyWeisbach equation.
The initial flow estimates are unlikely to give a balanced pressure
result over the whole system and must be further refined using an
iterative approach to adjust the flow rates until a pressure balance
is achieved. Pipe Flow Expert defines the elements of the pipeline
system in a series of matrix equations and uses the Newton method to
adjust the initial estimates for the flow rate in each pipe. Once an
approximate solution has been obtained, the results are refined
using a variation of the Newton method to ensure convergence until a
balanced pressure result is obtained.
