High Frequency Solvers
Time Domain This solver calculates the development of fields through time at discrete locations and at discrete time samples, which is remarkably efficient for most high-frequency applications and can obtain the entire broadband frequency behavior of the simulated device from a single calculation.

CST includes two time domain approaches, Finite Integration Technique (FIT), similar to FDTD, as the flagship solver with 40+ years of research, and the Transmission Line Method (TLM) for more EMI/EMC applications.
Frequency Domain
This solver utilizes the finite element method (FEM) with advanced tetrahedral meshing to solve Maxwell’s equations in the frequency domain.  While a classical frequency-domain simulation would be calculated frequency-by-frequency, CST employs two broadband methods, one for general purpose and one reduced-order for high-Q structures.
Eigenmode Used to calculate the frequencies and corresponding electromagnetic field patterns (eigenmodes) when no excitation is applied. Losses with the assumption of a frequency-independent complex permittivity or reluctivity are available. If waveguide ports are used, energy may leave the device through those terminals.
Integral Equation The integral equation solver discretizes the object boundary using the multilevel fast multipole method (MLFMM) which applies for the special interest of electrically large models.
Asymptotic
An asymptotic computation is an analysis in the frequency domain based on a so-called ray-tracing (shooting and bouncing rays, SBR) technique, typically used for scattering or antenna placement for electrically very large domains.
Multilayer A 3D solver for planar modeling and analysis based on the method of moments (MoM). It enables users to simulate multilayer geometries accurately and efficiently.
Partial RLC Used for calculation of equivalent circuit parameters, i.e., partial inductances, partial resistances, and partial capacitances, for a specified model. The extraction is based on the Frequency Domain Solver.
Low Frequency Solvers
Low Frequency – Frequency Domain (LF-FD) A 3D solver for simulating the time-harmonic behavior in low frequency systems that is useful for simulations of coils used for wireless power transfer.
Low Frequency – Time Domain (LF-TD) A 3D solver for simulating the transient behavior in low frequency systems which include eddy currents, non-linear effects and motion. Resistive-capacitive effects may also be modeled.
Static Solvers
Electrostatic A 3D solver for simulating static electric fields.
Magnetostatic A 3D solver for simulating static magnetic fields.
Stationary Current A 3D solver for simulating the flow of DC currents through a device, especially with lossy components.
Multiphysics Solvers
Steady State Thermal
Calculates the stationary temperature distribution of a system. Heat sources can include electric and magnetic fields, currents, particle collisions, human bio-heat, and other pre-defined sources.
Transient Thermal Calculates how a system heats over time. Heat sources can include electric and magnetic fields, currents, particle collisions, human bio-heat, and other pre-defined sources.
Conjugate Heat Transfer Combines thermal and fluid dynamics simulation methods, and can calculate the heating of a device while taking convection and fan cooling into consideration.
Mechanical Offers linear and non-linear methods for calculating the displacement and deformation of structures.
Particle Dynamics Solvers
Particle-in-Cell A versatile, self-consistent simulation method for particle tracking that calculates both particle trajectory and electromagnetic fields in the time-domain, taking into account the space charge effects and mutual coupling between the two.
Particle Tracking A 3D solver for simulating particle trajectories through electromagnetic fields.
Wakefield A solver that calculates the fields around a particle beam and the wakefields produced through interactions with discontinuities.
PCB Solvers
PCBs & Packages
A tool for signal integrity (SI), power integrity (PI), and electromagnetic compatibility (EMC) analysis on printed circuit boards (PCB).
Cable Solvers
Cable Suite Dedicated to the three-dimensional analysis of signal integrity (SI), conducted emission (CE), radiated emission (RE), and electromagnetic susceptibility (EMS) of complex cable structures in electrically large systems.
Circuits & Systems
Schematic Powerful and easy-to-use schematic design tool to simulate systems and circuits.
Assembly Layout used to integrate complex structures for synthesis and optimization.
Enhancements and Addons
Design Study & Optimization Fully-integrated parametric study and optimization tools are built into every design module.
Hardware Acceleration Included in the base price, leverage unlimited cores in your one-/two-socket workstation. Additional hardware accelerator tokens can be purchased for GPU(s), quad-socket systems, and cluster computing.
Integrated Design Modules CST has a large list of integrated add-on design modules including Antenna Magus (antenna design), Fest3D (mode-matching filter design), Spark3D (multipaction analysis), Filter2D (planar filter optimization) and Filter3D (cavity filter optimization).

 
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Read the CST Studio Suite tech docs

This includes the GPU computing guide, the MPI computing guide, and the OS support documentation. These are detailed, multi-page technical manuals about implementing CST software in your computing environment.

DLC: Datasheets: CST Studio Suite Tech Docs

This includes the GPU computing guide, the MPI computing guide, and the OS support documentation. These are detailed, multi-page technical manuals about implementing CST software in your computing environment.
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