CADRE Flow 3
Hydraulics and fluid flow system analysis
CADRE Flow provides for calculating
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System requirements
Windows 7 and Vista (32 & 64 bit), XP, 2000 with Microsoft .Net 2.0 framework
Download
CADRE Flow evaluation (fully functioning software)
Overview
CADRE Flow is a hydraulics engineering application for Windows.
CADRE Flow is developed using the basic principles of finite element method as applied to the hydraulics flow field. It is intended for solving incompressible fluid flow in piping systems, hydraulic systems, and fluid flow networks. There is virtually no limit to the degree of complexity (joints, lines, and line segments) that can be solved. Although limited to incompressible flow in pipes, CADRE Flow can be used to handle low speed air flow systems such as ventilation ducts where the overall pressure differential is small.
The piping system is the medium that forms the finite element analogy. In CADRE Flow, the elements are considered as pipes and the nodes are connecting points for the pipes or intermediate points in pipes where information such as pressure is desired.
The solution is conducted on a specific defined piping system which may be part of a larger system as long as the information at the defined boundaries are sufficient to solve the model.
The system may contain different properties of temperature, viscosity, and vapor pressure for the fluid in different parts of the system allowing one to investigate the effects of hotter or colder fluids after a heat exchanger.
Flow elementsThe elements used in CADRE Flow to construct flow networks are based on a simple straight section of pipe with a constant diameter. Although the element is based on a simple pipe, it is actually a container for devices and flow properties. The pipes can be designated as one-way pipes to account for check valves. The element can be assigned a device such as a pump (input) or a turbine (output). The element can also be designated as a tank which is modeled and displayed as a very wide diameter pipe. Element properties that are typically assigned are length, diameter, roughness, and discrete loss factors. Element losses
In establishing pipe friction, the full range of Reynolds number are considered from laminar, through transition, to turbulent so that a proper friction factor is automatically provided irrespective of the flow velocity in the element.
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Pipe Elements![]() ![]() Pump and turbine elements Tank element ![]() |
Flow elementsThe models can be considered schematic (with assigned lengths for elements) or geometric (with element lengths determined by the coordinates of the system drawing) or a combination of both. Likewise, the elevation of nodes (for gravity effects) can be schematic with assigned elevations or simply use elevations determined by the coordinates of the system drawing. The models can be full 3D representing a complete piping system for a 3D structure or schematics of a flow system. Models can be developed_
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3D fluid flow network for a multi-story building ![]() |
Single line pumping situationsDevelop pumping requirements and pipe sizes for typical single line pumping situations, accounting for losses from friction, reentrants, and pipe fittings. |
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Water distribution systemsCADRE Flow can solve any distribution network (e.g. area water systems, fire suppression sprinkler systems), enabling the determination of supply requirements, piping sizes. The system at the left could be a zonal system for a small town. |
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Develop load requirements for piping jointsBoth pressure and momentum forces can be developed combined or individually.
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Simulate low speed air duct systems |
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Graphical outputsPlot hydraulic grade lines, energy lines, distributions of pressure head, velocity, flow rate, etc. over any selected path in a fluid flow network |
Turbines and pumpsOutput for turbines are total power available, net effective head, and unit discharge. |
![]() Hydraulic turbine |
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Heat exchangers
Vary the fluid temperature, viscosity, and vapor pressure
within the system to account for heating and cooling
elements. |
Capability
CADRE Flow has virtually unlimited nodal and element capacity. Limits result from the allocation of memory by your computer and operating system.
Help
The context sensitive help system provides basic instruction in fluid mechanics, help for using CADRE flow and help in getting started with several step by step practice exercises.
Administration
License
Three (3) simultaneous installations allowed on the standard license. All CADRE Analytic granted software licenses are perpetual. There are no maintenance fees.
Technical support
Reasonable technical support on engineering projects by practicing professional engineers is free of charge.
Software support
Support for installation and continued functioning is always free and provided by real people by telephone and by e-mail.











