Pipe Flow Expert      管路設計與分析軟體

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 best-in-class & 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 Darcy-Weisbach method
Friction Factors calculated using the Colebrook-White 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 Darcy-Weisbach method provides accurate results for non-compressible 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 best-in-class & 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, looped-systems, 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 In-flow and the Out-flow 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 out-flows are used to set an initial flow rate in each pipe, with the total in-flow to each join point matching the total out-flow from each join point. The pressure losses within the system are calculated using friction factors obtained from the Colebrook-White equation, and the friction pressure loss for each pipe is obtained from the Darcy-Weisbach 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.