HFWorks is SolidWorks-embedded for high frequency applications. High frequency problems tend to be quite large because they are inversely proportional to the wavelength. Therefore, it is essential to take advantage of symmetry, when it exists, and apply the appropriate boundary condition. Several HFWorks users have asked for a clarification about this issue. There are two and only two types of symmetry B.C.:
Perfect magnetic conductor symmetry: applicable when the electric field is purely tangential, i.e. magnetic field is purely normal, on the plane of symmetry.
Perfect electric conductor symmetry: applicable when the electric field is purely normal, i.e. magnetic field is purely tangential, on the plane of symmetry.
Below is an illustration on a rectangular waveguide:
There are two major sub-domains in electromagnetics: low-frequency and high-frequency domains. Both domains are governed by Maxwell’s equations.
The low-frequency domain includes the major part of the electromagnetic devices such as bushing, insulators, circuit breakers, power generators, transformers, electric motors, capacitors, magnetic levitation devices, synchronous machines, DC machines, permanent magnet motors, actuators, solenoids, etc. Use EMS for these applications.
Strictly speaking, any application in which displacement currents are negligible can be classified as low-frequency. The absence of the displacement currents de-couples the electric and magnetic fields and the situation becomes static.
The high-frequency domain includes the study of electromagnetic waves and propagation of energy through matter. It may be some times difficult to distinguish between high-frequency and low frequency. Nevertheless, we can generally say that electromagnetic fields in which the displacement currents cannot be neglected belong to the high-frequency domain. The displacement currents couple the electric and magnetic fields to each other and the situation becomes fully dynamic. Examples of devices that use high-frequency include antennas, waveguides, transmission lines, filters, couplers, dielectric resonators, etc. Use HFWorks for these applications.
The Electrostatic module can help study a large number of devices and address numerous insulating and conducting phenomena. Below is just a partial list:
• Avoid rapid reduction in the resistance of an electrical insulator, that can lead to a spark jumping around or through the insulator, i.e. dielectric breakdown. This phenomenon is common in high voltage and high power applications.
• Avoid the ionization of a fluid surrounding a conductor, i.e. corona effect, in some applications such as power transmission equipments, transformers, capacitors, electric motors and generators.
• Produce corona in some other applications such as the manufacturing of ozone, scrubbing particles from air in applications such as air-conditioning systems, in nitrogen laser, when removing the unwanted electric charges from the surface of aircraft in flight, and in electrostatic copying.
• Assure that a high voltage machine is properly grounded.
• Reduce the electrostatic discharge in PCB and electronic designs.
• Assure the proper actuation force in MEMS and RF-MEMS designs.
• Avoid cross talk and distortion in electronic devices.
• Assure that a charged particle follows a desired trajectory.
• Compute the capacitance matrix, i.e. self capacitance and mutual capacitance, for high-speed electronic circuits and interconnects.
• Compute the electric field, electric flux, and voltage in insulators and around conductors.
EMS 2014 is the seventh release of EMS as a Gold Certified add-in to SolidWorks.
This is a major new release of the software that incorporates several new features at the meshing and pre-processing, solving and post-processing levels.
Below are the new capabilities that have been added in this release to provide users with more comprehensive simulation options and a more complete set of results.
Multi-core solving: EMS now includes fully parallelized multi-core solvers that make running studies up-to 20 times faster. Multi-core solvers come standard with EMS so you don’t need to pay extra to get it.
New easy-to-use 2D plot interface
Auto-insert Air: adding an air part is now possible allowing inserting a box, sphere or cylinder that encapsulates the whole model: the inserted part will automatically include the required cavities to avoid interference.
3D Mesh Pre-processing: Visualize and analyze the 3D mesh before launching the solver. Because meshing is critical to solution accuracy and speed, EMS now provides users unparalleled mesh viewing capabilities. This powerful feature allows users to visually inspect the mesh in a clear and uncluttered manner before launching the solver. It includes probing, section viewing and iso-clipping of the 3D mesh.
Material Library: enhanced EMS built-in material library including many new non-linear materials and material loss parameters.
Parametric Analysis: The EMS Parametric Study Mode enables designers to run multiple analysis tests automatically and then investigate the results to determine the best design. This mode makes it more intuitive for EMS user to evaluate various cases and what-if scenarios.
Exclude From Analysis: this feature enable the user to exclude an existing component from the analysis solution without having to suppress the excluded component from your SolidWorks model.
Comparison of Study Results: Enhanced tabular results from different studies and different configurations can now be compared through 2D plots.
ElectromagneticWorks will release its first version of EMWorks Xpress which is free and fully functional first-pass electromagnetic simulation tool. You can use EMWorks Xpress to perform basic electrostatic, magnetotstatic, and S-parameters analysis. You can easily study the effect of voltages on insulators, permanent magnets and coils on ferromagnetic core, and the frequency response of RF and Microwave devices. You can quickly determine and visualize design parameters such as electric field, voltage, magnetic flux density, magnetic field, and scattering parameters as well as generate both html and Word reports to document your work. Being free of charge, EMWorks Xpress has several limitations but enough to carry out basic analysis and have a feel of the unlimited versions of the company flagship products EMS and HFworks.
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