Skip to Main Content

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.

  • Check icon outline
    SpaceClaim’s Direct Modeler UI
  • Check icon outline
    3D Particle Transport
  • Check icon outline
    Surface and Internal Charging
  • Check icon outline
    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


  • 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.

July 2022

What's New

In the Ansys 2022 R2 update release, EMA3D Charge offers integration with Ansys Discovery to support EMC design work, enhanced monitoring for non-linear plasma physics phenomena, and individual particle interaction simulations in time-variant magnetic fields.

ema3D charge with ansys discovery
New Dielectric Breakdown Capability

Evaluate designs and assess the risk of dielectric breakdown for spacecraft, solar panels, high voltage solids insulators, cables, and connector design.

Ema3d Charge monitors probes
New Monitoring Probes

Specific animation probes monitor Air Conductivity and Spatial Charge when non-linear backgrounds are used, such as in plasma physics.

Space Plasma Environment
PIC Simulation

Particle-in-cell (PIC) simulations for space plasma environments

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).

See What Ansys Can Do For You

Contact us today

* = Required Field

Thank you for reaching out!

We’re here to answer your questions and look forward to speaking with you. A member of our Ansys sales team will contact you shortly.

Footer Image