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Flownex SE Modules

The Flownex Simulation Environment consists of several different modules that are linked together to provide a complete and comprehensive tool for modeling thermal fluid systems.

Please review the Module Brochure that includes this matrix showing features and which modules contain them. A summary from PADT can be found below as well.

The following information outlines the critical functions in each module:

Core Modules


Basic Thermal Fluid Module

This is the basic Flownex steady state module that all other modules build upon. It contains all the basic capabilities needed to build, run, and review static thermal fluid systems. It is required

It includes component models for:

  • Reservoirs
  • Pipes
  • Ducts
  • Pumps
  • Fans, compressors, and turbines
  • Heat exchangers
  • Valves
  • Orifices
  • Compound devices

This configuration also includes visualization graphs, text outputs, result layers, data logger and result export to excel, Buttons, gauges, sliders etc. of visualization is included as well as the ability to create compound components.

Advanced Thermal Fluid Module

This module includes advanced features that extend the basic module to handle a much broader range of problems. Features include:

  • Advanced heat transfer
  • Gas mixtures
  • Incondensable gas
  • Slury
  • Trace elements
  • Homogeneous two phase flow
  • Coupled heat transfer through solid structures
  • Turbo machinery components
  • Turbo machinery secondary flow
  • Combustion

The module also allows for user scripting and a connection to MS Excel.

Design and Analysis Module

This module adds designer and stochastic routines along with probabilistic analysis for both steady state and transient simulations. This allows for goal seeking, optimization, and sensitivity studies.

Transient Module

As the name implies, this module enables time-dependent solutions. It also includes the setup and result interrogation tools needed to define and review transient simulations.

Nuclear Module

This specialized module is focused on providing the components and tools needed to model various pebble bed reactor systems.


Library Modules


Control Module

This module allows users to model control networks that are attached to inputs on their thermal fluid network. Components include:

  • Controllers
  • Filters
  • Inputs and outputs IO
  • Math functions
  • Switches
  • Counters
  • IO's
  • Logic
  • Timers
  • Analog to digital, digital to analog, integer to double, etc.. Converters.) 

Electrical Module

The electrical module delivers components needed to define electrical networks and connect them to control and thermal fluid networks. It includes admittance components (generators, motors, transformers, etc.), auxiliary components (base power, base voltage, synchronizer, etc.), nodes (bus, fixed voltage node, infinite grid, etc.) and switches such as a breaker.

Extendibility Module

The Extendibility module allows users to write their own libraries consisting of components, editors, links, solvers, etc... These libraries can then be used with any other module within Flownex.

Integration Modules


ESS Module

The EES module connects Flownex to the EES (Engineering Equation Solver) allow the user to run co-simulations with EES.

OPC Module

This is an OPC client that allows communication of inputs and output between Flownex and an OPC Server, allowing communication with your industrial hardware.

RELAP Module

This module includes a RELAP component that allows Flownex to to communicate with RELAP and run co-simulation with this industry standard tool.

MathCAD Module

This module creates a two-way connection with MathCAD, giving Flownex the ability to do co-simulation with MathCAD models.

API Module

The Application Programming Interface provides routines that allow users to connect Flownex to in house, academic, or commercial tools. From Microsoft Excel to ANSYS FLUENT, it opens the doors to any COM, DCOM, ActiveX or .NET capable application.


Explore the links to the right or contact PADT's sales and technical staff to see why engineers who start using Flownex can't live without it.