A General Solver for System Level EM

EMA Professional Demo

EMA3D Simulation of a HIRF Plane Wave Interacting

Finite-difference time-domain simulation perfected

EMA3D has 40 years of large platform validation heritage from programs all over the world. It is the most mature FDTD solver on the market with all modern features included. EMA3D is a powerful 3D numerical solution of Maxwell’s curl equations based on the time-domain finite-difference method in rectangular coordinates. The code has application to nearly any EM coupling, radiating, or interaction problem. EMA3D’s FDTD approach is the only EM tool capable of capturing the detail of entire aerospace or ground systems down to individual electronics interfaces in a computationally accessible manner. EMA3D is parallel and runs efficiently on large workstations and clusters.

EMA3D Simulation of current in a carbon fiber coupon

EMA3D Capabilities

EMA3D includes all modern features that one would expect in a state-of-the-art solver along with some that are unique to EMA3D. This includes the ability to model thin wires, thin gaps, and thin surfaces that are smaller than the computational mesh size. Frequency dependent and anisotropic EM parameters are allowed. Also, there are a variety of boundary conditions, sources, and variable mesh sizes available. EMA3D has a sophisticated air conductivity model that considers the plasma fluid nature of air in high electric fields. EMA3D can co-simulate with MHARNESS for a powerful method of determining cable coupling.

Comanche helicopter shown in
EMA3D’s CAD tool

EMA can import and prepare models for EM simulation

The EMA framework is capable of importing geometry from all major CAD formats. The analyst can add salient EM features, such as seams, and mesh the geometry for EM simulation. View a video demonstration of the software below.

More information on EMA3D 2020R1 on ANSYS is available here.