Induction coil service

Induction Heating Computer Simulation

Electromagnetic and thermal simulation used to develop and optimize induction coils and processes.

Induction heating computer simulation models the electromagnetic and thermal processes in a coil, part and flux controller before anything is built. Fluxtrol uses ELTA and Flux 2D/3D, and exports results to other codes for metallurgy, stress and deformation, to optimize coil geometry, cooling, power and frequency.

Computer simulation of an induction heating coil

Computer simulation or modelling is a powerful tool for analyzing induction heating systems. Fluxtrol extensively uses computer simulation for the development and optimization of induction heating coils and processes. As compared to many other companies who use computer simulation only once they have not achieved the desired results empirically, Fluxtrol begins nearly every project with computer simulation to ensure that the best possible solution is delivered to the customer.

Fluxtrol specializes in computer simulation for the optimization of the magnetic and thermal processes occurring during an induction heating process. Using computer simulation, Fluxtrol can analyze the impact of changes to the geometry of the workpiece, material of the workpiece, motion of the part relative to the Induction heating coil, Induction heating coil copper dimensions, the influence of the magnetic flux controller geometry and properties, the power and frequency profile, quenchant type and intensity, the coil cooling circuit and heat exchange with surrounding bodies such as insulation or heat sinks on the temperature dynamics both the workpiece, power absorbing bodies in proximity to the inductor and the Induction heating coil components themselves.

Fluxtrol has been using computer simulation for more than 20 years and has determined that the most efficient and highest quality solutions for complex problems are achieved when employing different types of computer simulation programs for solving different tasks and partnering with experts in their respective disciplines. Internally, Fluxtrol utilizes both ELTA and Flux . ELTA is a 1D FDM engineering program with additional analytical formulations for calculations of 2D effects that is excellent for quick analysis of induction system and setting the process parameters. Recently, ELTA has incorporated some customized 2D models for simulation of selected problems like heat treatment of gears and heating of slabs. Flux (capable of both 2D and 3D analysis) is a FEA software for simulation of the electromagnetic and thermal processes, with the added ability to incorporate motion of the part or inductor.

For Multiphysics (in addition to electromagnetic and thermal) models, Fluxtrol has achieved excellent results partnering with their customers by exporting results from their software for import into complementary codes used by their customers or their colleagues. A good example of this is performing metallurgical transformation, residual stress and deformation analysis of parts during heat treating and consequent service properties. This technology allows us to predict part performance and create proposals for manufacturing process optimization.

To demonstrate this capability, Fluxtrol partnered with Dante solutions and published a series of papers on the topic. In order to validate the results, Fluxtrol invited the Chief Metallurgist at Dana, Greg Fett, to participate in the papers. Fluxtrol has since used this method with several customers to solve real world heat treatment issues. Fluxtrol has also partnered with customers using many other types of simulation software to help them developed improved technologies that have been implemented successfully.

Contact us today to see how computer simulation can work for you. See how simulation fits the coil workflow and the Flux 2D/3D and ELTA modeling services .

Example simulations

The animations show simulated results for the hairpin coil case in the coil workflow , each with the coil shown and hidden.

Isometric view

Temperature, coil shown

Isometric view simulation of temperature with the coil shown

Temperature, coil hidden

Isometric view simulation of temperature with the coil hidden

Current density, coil shown

Isometric view simulation of current density with the coil shown

Current density, coil hidden

Isometric view simulation of current density with the coil hidden

Resistivity, coil shown

Isometric view simulation of resistivity with the coil shown

Resistivity, coil hidden

Isometric view simulation of resistivity with the coil hidden

Plan view

Temperature, coil shown

Plan view simulation of temperature with the coil shown

Temperature, coil hidden

Plan view simulation of temperature with the coil hidden

Current density, coil shown

Plan view simulation of current density with the coil shown

Current density, coil hidden

Plan view simulation of current density with the coil hidden

Resistivity, coil shown

Plan view simulation of resistivity with the coil shown

Resistivity, coil hidden

Plan view simulation of resistivity with the coil hidden

Frequently asked questions

Which software does Fluxtrol use for induction simulation?
Internally Fluxtrol uses ELTA and Flux. ELTA is a 1D finite difference program with analytical formulations for 2D effects, suited to quick analysis and setting process parameters. Flux is finite element software for 2D and 3D electromagnetic and thermal simulation, with the ability to include motion of the part or inductor.
What can simulation tell me about my coil?
Fluxtrol can analyze how workpiece geometry and material, part motion, coil copper dimensions, flux controller geometry and properties, power and frequency profile, quenchant type and intensity, and the coil cooling circuit affect temperatures in the workpiece, nearby power-absorbing bodies and the coil components. Simulation also predicts voltage, current, power and inductance.
Can induction simulation include stress and distortion?
Yes, by partnering. Fluxtrol exports results from its software into complementary codes for metallurgical transformation, residual stress and deformation analysis. With Dante Solutions it published a series of papers on this method, and Dana’s chief metallurgist took part to validate the results.
How accurate is induction heating simulation?
There is no simple answer. Fluxtrol’s paper on the subject discusses the sources of inaccuracy and what users must pay attention to, covering electromagnetic and thermal processes. Results are best confirmed by comparing with experiment, as in the Fluxtrol workflow where simulation and test results are compared for the same coil.

Optimizing an induction process?

Talk with a Fluxtrol engineer about your coil, material or heat pattern challenge.