CELSIUS delivers a powerful, easy to use, 3D thermal design and analysis tool right to your desktop. It provides fast, accurate results, exact modeling of boundaries and easy analysis of open region problems.

In many applications including part forming, bonding and hardening, the heat distribution over time within the part being heated is essential. Without this knowledge the process is carried out in an ad hoc manner. Ultimately, this lack of knowledge will be an added cost to the product in terms of quality, time to market, or excess material and energy costs.

In addition to simulating the part, designing the environment in which the part is heated may also be important. For induction heating, the shape of the coils can play a major part in the heating process. In addition, the heating equipment can be driven at different frequencies which will also affect the quality and efficiency of the heating process. To cater to these problems, a finite element or a combination of finite element methods is required. The real question is to understand the process and find the level of simulation required to produce useful results.

KELVIN/CELSIUS Information Sheet

Sample Sessions

CELSIUS Overview

CELSIUS Sample Session 1

CELSIUS Sample Session 2

Key Features

  • 3D static and transient thermal analyses field solver for a diverse range of applications.
  • At no extra cost, our software packages include:
    • Choice of solvers: To ensure you have confidence in the solution and for independent verification, both  BEM and FEM  methods are included in the same software package to suit your specific application needs. Not every solver fits every application, no “one size fits all”.
    • Choice of optimization tools: Parametric Analysis  for those who need fast and easy optimization with a short learning curve. API  and Scripting  give more power to advanced users. Both tools are available in  the same  package.
    • Built-in material libraries: Customize and create your own library for easy access to the materials you use.
    • Integration with MATLAB®: Users' MATLAB code can include function calls to the INTEGRATED API to build geometry, assign physical parameters, solve, and obtain results.
    • Parallelization: When used on 64-bit computers, this premits full utilization of the available RAM to dramatically increase speed of solution and post-processing.
  • Intuitive interface that can be easily customized according to user preferences (overall appearance, toolbars, solvers, backgrounds, defaults, etc).


  • Static, phasor and transient analysis modes.
  • Static electric field, electrical conduction analysis and quasi-static analysis of lossy dielectrics.
  • Simulation of non-linear conductivity and permittivity.
  • Ability to assign constant or non-uniform charge distributions to surfaces.
  • Electrostatic force and torque; transmission line parameters and capacitance calculations.
  • Batch function allows for unattended solution of multiple files.
  • PD Inception analysis.

Solvers and Meshing

  • INTEGRATED includes the most appropriate solvers for every kind of application.
  • Both BEM and FEM solvers are included in the same software package, at no extra cost, to suit your specific application needs.
  • Auto solver will choose FEM or BEM based on the general nature of a model (either can still be manually selected).
  • Self-adaptive meshing and optional user refinement.
  • User assigned weighting factors: Inform the solver of areas that interest you so the that the local results are refined.
  • Periodic and symmetry features minimize modeling and solution time.


  • At no extra cost, INTEGRATED includes a variety of optimization tools in the same software package so that you can find one that best suits your particular design: Parametric Analysis, Scripting and API. Parametric Analysis works best for those who need fast and easy optimization with a short learning curve while API and scripting give more power to advanced users.
    • The parametric feature allows a definition of variable parameters to be stepped through for the analysis of multiple “what-if” scenarios and facilitating design optimization.
    • Scripting: Virtually unlimited ability to explore design variations.


  • Create your own applications: Write your own dedicated tools for specific tasks. Users can program and have full control of their custom electromagnetic application, while using INTEGRATED programs in the background.
  • INTEGRATED’s API allows a variety of programs such as MATLAB, Excel, and Microsoft Visual Studio to work with our software in an interconnected environment. Other software tools can be used with our API in the same way.
  • Add-on utility tools: Select among our custom mini-programs to enhance your design capabilities.
  • Users with programming and/or scripting skills will find this is a very powerful tool.

Materials Table

  • Several material tables provide many integrated libraries. Customize and create your own library for easy access to the materials you use.

Analyzing Your Results

  • Audiovisual (AVI) files allow you to show the results in an animation.
  • A variety of display forms for plotting results, including scalar and vector field quantities such as graphs, contour, arrow, streamline, scatter and vector loci plots.
  • High quality graphics and text utility for preparation of reports and presentations.
  • Data exportable to formatted files for integration with spreadsheets and other software packages.
  • Wide array of post processing options for design evaluation and optimization.
  • Efficient use of parallel processing for post-processing operations.
  • A variety of display forms including contour or arrow plots, color bands, surface representations, polar, rectangular plots and patterns.

Geometry - CAD features

  • Inventor – SolidWorks Solution Partner
  • SolidEdge – Siemens Solution Partner
  • AutoDesk Authorized Developer
  • PTC Solver Partner Advantage
  • Microsoft Partner
  • Intel Software Partner
  • Tecplot Partner
  • Industry standard CAD import/export utilities offering time saving convenience for model design and creation
  • CAD healing utilities for automatic correction of drafting errors
  • *.STEP, *.SAT, *.3DM, *.IGES and *.DXF file import options
  • Geometry tools for healing common 3D CAD problems
  • Ability to assign name to geometry entities


  • Electronic Packaging
  • Cooling fins
  • Heat sinks
  • Appliances
  • Aerospace components
  • Automotive components
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