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Ansys EMA3D Charge
Charging And Discharging Modeling Solution

3D modeling solution of charging, discharging and charge carrier transport across a wide range of applications, in one streamlined workflow.

Material Charging and Discharging Modeling Build into Ansys SpaceClaim

Ansys EMA3D Charge supports an array of analyses by leveraging four physics solvers designed to tackle internal and surface charging, particle transport, and arcing across interfaces –all in a streamlined workflow built into the Ansys SpaceClaim CAD interface. EMA3D Charge expedites the assessment and management of risk associated to material charging and discharging.

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    SpaceClaim’s Direct Modeler UI
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    3D Particle Transport
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    Surface and Internal Charging
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    ESDs in Air and Dielectrics
Material Charging and Discharging Model

Quick Specs

  • Finite Difference Time- Domain (FDTD)
  • 3D Particle Transport
  • Non-linear Air Chemistry Module
  • Supports Ansys HPC
  • Finite Elements Method (FEM)
  • Self-Consistent Coupled Simulations
  • AGI STK and Ansys EnSight Compatibility
  • Optimized Charge Balance Equation Solvers
  • Integrated Pre- and Post- Processing
  • Ansys SpaceClaim Included

January 2023

What's New

Integrations with multiple Ansys tools (Discovery, Fluent, STK, and many more) support a wide range of computational multiphysics applications, and enhanced support for are just some of the new capabilities in EMA3D Charge.

ema3D charge using Ansys Discovery
Data Visualization

New integrated data visualization capabilities within Ansys Discovery complete the analysis of simulation results of the end-to-end workflow of EMA3D Charge. Engineers now have optimized access to all 3D, time-varying variables of the EMA3D Charge physics solvers through a GPU-accelerated graphics visualization toolkit.

Ema3d Charge System Coupling 2.0
System Coupling Integration

New integration with System Coupling 2.0 allows the exposure of plasma physics variables in EMA3D Charge to other Ansys physics solvers, emphasizing multiphysics coupling to Ansys Fluent for modeling heat generation, convection, and dissipation in arc modeling or plasma dynamic models in PE-CVD applications.

Ansys STK Integration
Ansys STK Integration

New seamless integration with Ansys STK enables users to efficiently analyze radiation shielding dose and internal charging in 3D, using the time-varying radiation models available along an ephemeris defined in an active STK session.



  • Internal Charging
  • Electrostatic Discharge in Air
  • Surface Charging 
  • 3D Particle Transport
  • Arcing in Solid Dielectrics
  • Coupled Charing Simulations

Simulate internal charging of conducting and insulating solids to recover electric fields and currents induced by high energy particles and time-varying currents. Assess the risk of dielectric breakdown or the amount of current generated from nuclear interactions of high-energy particles with bulk material. Take advantage of a full-wave finite-element method (FEM) solution for electromagnetism to accurately reproduce current waveforms and analyze risks of EMI.

Electrostatic Discharge in Air Leverage a full-wave, finite-difference time domain (FDTD) solver of Maxwell’s equations, coupled with a non-linear air chemistry module, to accurately simulate the arcing phenomenon in complex CAD geometries. Reproduce flashover events on PCB nets, arcing events in circuit breakers of any voltage, ESD testing standards for electronics, and more. Recover the arc current waveform created during the arc creation to tackle concerns of electromagnetic interference (EMI).

Simulate the surface charging of materials in various low- and high- energy, time-varying, charging environments such as space plasmas, precipitation statics, and triboelectric effects. Assess the risk of communication disruption, material degradation and discharge by locating regions with excessive charge accumulations.

3D Particle Transport Starting from a time-varying flux of high energy primary particles and any source geometry, track interactions of primary and secondary particles with any 3D bulk material. Couple the 3D particle transport with the FEM to infer particle flux, charge deposition rates, currents, electromagnetic fields and energy, while simultaneously calculating how these fields affect the particle interactions. Extract energy spectra by particle type to tackle radiation hardening problems and sneak path analysis.

Simulate electronic and avalanche breakdown of solid dielectrics by leveraging the state-of-the-art coupling of the FEM with the 3D particle transport, integrated in a multi-physics approach of the arcing phenomena. Using a stochastic tree model and the full-wave FEM solution for electronic breakdown, recover the current waveforms generated by arcing events and tackle resulting EMI concerns. With identified arcing regions, assess levels of material degradation and conductivity changes due to carbonization.

Self consistently solve for the surface or internal charging problem to tackle complex charging environments. Use the FEM mesh to track electromagnetic fields in 3D around a surface charging problem or infer how much charge is deposited on a surface from high-energy particles of the 3D transport source, tracked in the FEM volumetric mesh.


Featured Webinars

Upcoming Webinar
March 14, 2023 11 AM EDT / 3 PM GMT / 8:30 PM IST
Ansys 2023 R1: EMA3D Cable & EMA3D Charge What’s New

Discover new capabilities to EMA3D Cable and EMA3D Charge, including integrations with other Ansys tools to support valid Multiphysics applications, automated workflows, and improved support for designers working on EMC, PE-CVD, and space apps.

Webinar Series
EMA3D Cable vs. EMA3D Charge Webinar Series

Learn the EMA3D Cable and EMA3D Charge applications and how each solver applies to Aerospace and Defense.

Webinar Series
EMA3D Cable Airplane SImulation
EMA3D Foundations & Integrations Webinar Series

Learn the numerical methods and solver technologies EMA3D Cable, and EMA3D Charge employs. Applications are discussed to illustrate how EMA3D solver technology suits the modeling, simulation, and analysis of the selected electromagnetic problem sets.

White Papers & Articles

physics based sensor validation

EMA3D Charge and its Particle-in-Cell Solver

The solver technology of EMA3D Charge is unique – in particular, it’s Particle-In-Cell (PIC) solver. The solver contains, amongst other factors, a nonlinear component. EMA3D Charge is uniquely suited to modeling and simulating charged plasmas and their sudden discharges with industry-leading accuracy.


Ansys software is accessible

It's vital to Ansys that all users, including those with disabilities, can access our products. As such, we endeavor to follow accessibility requirements based on the US Access Board (Section 508), Web Content Accessibility Guidelines (WCAG), and the current format of the Voluntary Product Accessibility Template (VPAT).

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