All Things Ansys 099: The Future of Ansys on the Cloud

 

Published on: October 18th, 2021
With: Eric Miller & Wim Slagter
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by Director of Strategic Partnerships at Ansys Wim Slagter to discuss the latest advancements in the software’s HPC capabilities, and how users can make the most out of cloud computing.

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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Mechanical Updates in Ansys 2021 R2 pt. 3: nCode, Linear Dynamics & Acoustics – Webinar

Ansys Mechanical delivers features to enable easier workflows, analysis, scripting and product integrations that offer more complex solver capabilities. 

With the Ansys suite of tools, engineers can perform finite element analyses (FEA), customize and automate solutions for structural mechanics challenges and analyze multiple physics scenarios. By implementing this software into a manufacturing workflow, users can save money and time while ensuring their product meets the innovative requirements they have setup.

Join PADT’s Senior mechanical engineer & lead trainer Joe Woodward to discover the new features that have been added to Ansys Mechanical in PADT’s final webinar covering the 2021 R2 Mechanical release.

Highlights include nCode design capabilities, linear dynamics, acoustics, and explicit dynamics among many others.

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All Things Ansys 097: Fluids Updates in Ansys 2021 R2

 

Published on: September 20th, 2021
With: Eric Miller & Sina Ghods
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Senior Application Engineer and fluids expert Sina Ghods for a look at what’s new for fluid simulation in Ansys 2021 R2.

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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All Things Ansys 096: IT Tips & Tricks for Ansys Support

 

Published on: September 7th, 2021
With: Eric Miller & Ahmed Fayad
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s IT Software Support Engineer, Ahmed Fayad to discuss common support questions he frequently receives, along with best practices for avoiding issues and finding solutions within Ansys simulation software.

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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What’s new in Flownex 2021 Update 1

Friday Flownex Tip #16:

The Flownex team has just released Flownex SE 8.12.8, also known as 2021- Update 1. This release added new components, additional flexibility, additional improvements to user-friendliness, and bug fixes. There is a lot to unpack, and the best way to know all the details is to dig into the Release Notes. If you don’t have time for that, below are the nine enhancements that PADT’s engineers feel are the most noteworthy.

Velocity Based PID controller in the Distributed Control System

The new velocity based PID controller calculates the change in output variables, rather than an output itself. This enables multiple controllers to control the same variable without causing spikes in the output.

Steady state operations are now part of DCS components

DCS components can propagate their inputs into the model before, during, or after a steady state solution has been computed. This allows the user to decide if the DCS component initializes the steady state solution, calculate values for each timestep during the solution, or after the steady state solution has been completed. Be default, before is used.

Component Selection now has a search feature

The same controls that are in Flownex’s “Find” dialog are now in the Component Selection dialog. Multiple filters and options are available to make it easy to select components in models.

Added humid air fluid functions to Material Scripts

Psychrometric fluid functions have been added to the Material Scripts to enable the calculation of mixture mass fractions for three input combinations:

  • Humidity Ratio
  • Pressure, dry bulb temperature, and relative humidity
  • Pressure, dry bulb temperature, and wet bulb temperature

A new option to select between Conduction Shape Factors and Effective Area for the composite conductivity element

This one is pretty straightforward. A drop down in the Composite Conductivity dialog, under “Geometry”, lets the user specify which method they want for calculation conduction.

The installation verification tool now support several instances of Flownex in parallel

Users can now make sure that their installation is running parallel instances correctly with this new option. By default, it will run half the number of available logical processors, or the user can change the number in the tools user interface.

The Reactor Builder script has been greatly enhanced

User input has been combined to make multiple changes to the script that builds reactors. The enhancements are very specific to nuclear reactors and not only allow for more accurate models, but also a smoother process. If you use this feature, make sure you check the release notes.

Changes have been made to the runtime neutronics script

Another area that should excite (is that a pun?) those who model nuclear reactors are the user-driven changes to the script that models neutron behavior in reactors. These are fairly significant and a must-read for anyone who uses this feature.

Ability to select all components in a flow circuit on the drawing canvas

Users can now right-mouse-button on a component in their model and select all the components that are in the same flow circuit. Not only are they selected, but any common properties are shown in the properties grid.

And, much more

There were also a few bug fixes, especially in the flow solver components, so if you were dealing with an issue check the release notes or contact PADT to see if your problem has been resolved.

These were the changes that we think most users would be interested in knowing about. Check out the release notes to see all of them and, as always, don’t hesitate to reach out if you have any questions or don’t see something you need.

All Things Ansys 093: Introducing Ansys 2021 R2

 

Published on: July 26th, 2021
With: Eric Miller, Tom Chadwick, Aleksandr Gafarov, Joe Woodward, Ted Harris, Sina Ghods, & Josh Stout
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by members of the simulation support team to explore Ansys 2021 R2 and discuss their favorite features so far.

Ansys multiphysics software solutions and digital mission engineering help companies innovate and validate like never before. Ansys gives engineers the power to see how their ideas will perform against millions of variables.

Ansys 2021 R2 delivers significant improvements in simulation technology together with nearly unlimited computing power to help engineers across all industries reimagine product design and achieve product development goals that were previously thought impossible.

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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Introducing Ansys Rocky – Webinar

PADT is excited to share more information on one of the latest Ansys acquisitions, Rocky DEM.

Rocky is a powerful 3D Discrete Element Modeling (DEM) Particle Simulation Software that quickly and accurately simulates the flow behavior of bulk materials with complex particle shapes and size distributions, for typical applications such as conveyor chutes, mills, mixers, and other materials handling equipment.

Rocky is fully integrated with the Ansys Workbench suite of products, providing engineers with the ability to perform coupled analysis of particles simulation together with other physics such as structural and fluids. 

Such coupling can be performed using both 1-way and 2-way approaches, depending upon the nature of the problem to be solved. When Rocky is coupled with Ansys Mechanical software, engineers can evaluate the tension stresses and forces generated by granular matter as it interacts with materials handling equipment, such as transfer chutes and conveyor belts.

Join PADT’s Senior CFD Engineer and Rocky expert Tom Chadwick for a look at what this tool is all about, as well as how it operates in a variety of industries, such as:

  • Food & Beverage
  • Agricultural Equipment
  • Medical Devices
  • And More

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Simulating Electrical Windings: Solid or Stranded?

In Ansys Maxwell, windings can be added in Eddy Current and Transient Solvers. There are two types of conductors when assigning the windings: Solid and Stranded. What is the difference?

The Solid type considers the conductor as a solid part and therefore, the eddy current and AC effects will be taken into consideration. While the Stranded type assumes the conductor consists of infinite strands of tiny conductors and therefore, there is no eddy current inside the conductor.

Now if there is no time-varying current or magnetic field in the model, will it be the same using Solid or Stranded? The answer is NO. Figure 1 shows a simple geometry of one-turn copper conductor. The cross-section is 1 mm by 1 mm and length of each edge is 100 mm. Assume the winding type is External and the circuit is shown below in Figure 2. The winding is connected to an external resistance (0.003 ohm) and the DC voltage source is 1 V.

Fig. 1 – Geometry of the conductor
Fig. 2 – Winding external circuit.

The question will be: what is the current in the winding? Based on the physical geometry of the conductor, the conductor resistance can be calculated by R=ρ L/A, where L is the length of the conductor, A is the cross-sectional area and ρ is the resistivity of the copper material. The calculated conductor resistance is about 0.006872 ohm. The winding current will be different based on conductor type.

  • Solid type

When the conductor is selected as Solid in ANSYS Maxwell, the winding resistance will be included while calculating the current. Therefore, the winding current will be:

Note: if the winding resistance is changing, the winding current will also change.

And the winding loss will be:

The winding loss calculated by Ansys Maxwell is 70.57 W which is identical to the result above.

  • Stranded type

When the conductor is selected as Stranded in Ansys Maxwell, the winding resistance will NOT be included while calculating the current. Therefore, the winding current will be:

Note: the winding current is a constant no matter the winding resistance changes or not.

And the winding loss will be:

The winding loss calculated by Ansys Maxwell is 763.55 W which is identical to the result above.

Conclusion

  1. The Solid type is needed if the AC effect is of interest.
  2. For Voltage winding type, the DC winding current and DC winding loss will be different for Solid and Stranded types. If the load resistance is much larger/smaller than the winding resistance, this difference can be neglected.
  3. If the user is using the Voltage source and doing the EM-Thermal coupling simulation, it requires more attention as the temperature rise will increase the winding resistance and therefore, decrease the winding current (as the voltage is fixed). In this case, users can either choose Solid or add an additional scaling factor in the material property to compensate for the current difference.

If you would like more information related to this topic or have any questions, please reach out to us at info@padtinc.com.

Ansys – Software for Electric Machine Design

The electric propulsion system has drawn more and more attention in the last decade. There has been a lot of development of the electric machines which are used in automotive and aerospace. It is essential for engineers to develop electric machines with high efficiency, high power-density, low noise and cost.

Therefore, simulation tools are needed to design the electric machines that can meet the requirement. The product launching time can be reduced significantly with the help of the simulation tools. The design process of electric machine involves the area of Electromagnetics, Mechanical, Thermal and Fluids. This makes Ansys the perfect tool for designing electric machines as it is a multi-physics simulation platform. Ansys offers a complete workflow from electromagnetics to thermal and mechanical which provides accurate and robust designs for electric machines.

To design high performance, more compact and reliable electric machines, design engineers can start with three Ansys tools: RMxprt, Maxwell and Motor-CAD. The capabilities and differences of these three tools will be compared and discussed.

1. Ansys RMxprt

Ansys RMxprt is a template-based tool for electromagnetic designs of electric machines. It covers almost all of the conventional radial types of electric machines. Starting from Ansys 2020R2, some axial types have also been included in RMxprt (IM, PMSM, BLDC).

Fig. 1. Electric machine types in Ansys RMxprt.

Users only need to input the geometry parameters and materials for the machines. The performance data and curves can be obtained for different load types. Since RMxprt uses analytical approaches, it can generate results very fast. It is also capable of running fast coupling/system simulations with Simplorer/Twin Builder. Ready-to-run Maxwell 2D/3D models can be created directly from RMxprt automatically.

2. Ansys Maxwell

Ansys Maxwell is a FEA simulation tool for low-frequency electromagnetic applications. Maxwell can solve static, frequency-domain and time-varying electromagnetic and electric fields. The Maxwell applications can be but not limited to electric machines, transformers, sensors, wireless charging, busbars, biomedical, etc.

Unlike RMxprt which uses analytical method, Maxwell uses the FEA approach which allows it to do high accuracy field simulations. Engineers can either import the geometry or create their own models in Maxwell. Therefore, there is no limit of types of machines that can be modeled in Maxwell. It can model all types of electromagnetic rotary devices such as multi-rotor and multi-stator designs.

Fig. 2. Electric machine detailed model in Ansys Maxwell.

Maxwell can do more detailed electromagnetic simulations for electric machines, for example, the demagnetization of the permanent magnets, end winding simulations and magnetostrictive effects. With Maxwell, engineers are able to run parametric sweep for different design variables and to do optimizations to achieve the optimal design. Maxwell is also capable of creating equivalent circuit extraction (ECE) models. The ECE is one of the reduced order modelling (ROM) techniques, which automatically generates an efficient system-level model. There are several Ansys customization toolkit (ACT) available for Maxwell to quickly create efficiency map and simulate impact of eccentricity. Furthermore, Maxwell can be coupled with Ansys Mechanical/Fluent/Icepak to do thermal and mechanical analysis.

3. Ansys Motor-CAD

Ansys Motor-CAD is suitable to make design decisions in early design phase of electric machines. It includes four modules: electromagnetic, thermal, lab and mechanical. Motor-CAD can perform multiphysics simulations of electric machines across the full torque-speed range. Motor-CAD uses a combination of analytical method and FEA, and it can quickly evaluate motor topologies and optimize designs in terms of performance, efficiency and size.

Motor-CAD is capable of simulating the radial types of electric machines. With its lab module, it can do the duty cycle simulations to analyze electromagnetic, mechanical and thermal performances of electric machines. The thermal module is a standard tool in industry which can provide fast thermal analysis with insight of each thermal node, pressure drop, losses. Motor-CAD mechanical module uses 2D FEA to calculate the stress and deformation. Engineers can also manually correlate the models in Motor-CAD based on the manufacturing impacts or testing data.

Fig. 3. Ansys Motor-CAD GUI and machine types.

Motor-CAD can provide links to Ansys Maxwell, Mechanical, Icepak and Fluent for more detailed analysis in the later phases of motor designs.

  • What to use?

RMxprt and Motor-CAD both can handle most of the radial types of electric machines. RMxprt can also model some conventional axial flux machines. RMxprt can purely model the electromagnetic performance of the machines, while Motor-CAD can simulate electromagnetic, thermal and mechanical performances.

Maxwell can simulate any types of machines (radial, axial, linear, hybrid, etc.) as it can import or draw any geometry. Both static and transient analysis can be conducted in Maxwell.

  • When to use?

RMxprt and Motor-CAD are most suitable in the early design stages of the electric machines. Engineers can get fast results about the machine performance and sizing which can be used as a guideline in the later design phase.

Maxwell can be used in the early design stages for more advanced types of electric machines as well. Maxwell is also capable of doing more detailed electromagnetic designs in the later stage and can be used to do system-level transient-transient co-simulation (coupled with Ansys Simplorer/Twin Builder). More detailed geometries, advanced materials and complex electromagnetic phenomenon can be modeled in Maxwell. In the final stages of running more advanced CFD and NVH analysis, Maxwell can be linked with Ansys Fluent/Icepak/Mechanical to ensure the design robustness of the machines before going into prototyping/production.

  • Who can benefit?

RMxprt and Motor-CAD do not require strong FEA simulation skills as no boundary conditions or solution domain need to be set. Engineers with basic knowledge of electric machines can get familiar with the tools and get results very quickly.

Maxwell requires users to setup the mesh, boundary and excitations as it uses the FEA method. Engineers will need to acquire not only the basic concepts of machines but also some FEA simulation skills in order to get more reasonable results.

Summary

RMxprt: It is a template-based tool for initial electric machine designs which uses analytical analysis approach.

Maxwell: It uses FEA approach model both 2D and 3D models. It is capable of simulating either simple or mode advanced electromagnetics in electric machines.

Motor-CAD: It is suitable for initial machine designs which uses analytical and FEA methods. It can do electromagnetic, thermal and initial mechanical analysis.

If you would like more information related to this topic or have any questions, please reach out to us at info@padtinc.com.

Signal & Power Integrity Updates in Ansys 2021 R1 – Webinar

The use of Ansys Electronics solutions minimizes the testing costs, ensures regulatory compliance, improves reliability and drastically reduces your product development time. All this while helping you build the best-in-class and cutting-edge products.

With signal and power integrity (SI & PI) analysis products, users can mitigate many electrical and thermal issues affecting printed circuit boards such as electromagnetic interference, crosstalk, overheating, etc. Ansys integrated electromagnetics and circuit simulation tools are essential for designing high-speed serial channels, parallel buses, and complete power delivery systems found in modern high-speed electronic devices.

Leverage the simulation capability from Ansys to solve the most critical aspects of your designs. Join PADT’s Electronics expert and application engineer Aleksandr Gafarov for a detailed look at what is new for SI & PI in Ansys 2021 R1, including updates available within the following tools:

• SIwave – Granta support & differential time domain crosstalk

• Q3D – Uniform current terminals

• Circuits – Network data explorer & SPISim

• HFSS 3D – Parallel meshing, encrypted 3D components & IC workflow improvements

• Electronics Desktop – Ansys cloud, Minerva & optiSLang integration

• And much more

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All Things Ansys 087: Introducing Rocky DEM – The latest in 3D Discrete Element Modeling Technology

 

Published on: May 3rd, 2021
With: Eric Miller, Robert McCathren, Ahmad Haidari & Marcus Reis
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Application Engineer, Robert McCathren, as well as Ahmad Haidari – Senior Director of Strategy & Business Development at Rocky DEM, and Marcus Reis – VP of Sales, Support & Marketing at Rocky DEM to discuss the company’s partnership with Ansys and what their tool is capable of.

Rocky is a powerful 3D Discrete Element Modeling (DEM) Particle Simulation Software that quickly and accurately simulates the flow behavior of bulk materials with complex particle shapes and size distributions, for typical applications such as conveyor chutes, mills, mixers, and other materials handling equipment.

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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Additive & Structural Optimization Updates in Ansys 2021 R1 – Webinar

The most powerful simulation solution for metal additive manufacturing, the Ansys Additive Suite delivers the critical insights required by designers, engineers and analysts to avoid build failure and create parts that accurately conform to design specifications. This comprehensive solution spans the entire workflow — from design for additive manufacturing (DfAM) through validation, print design, process simulation and exploration of materials.

Ansys 2021 R1 delivers enhancements across all portfolio products — Ansys Additive Prep, Ansys Additive Print, Ansys Additive Science and Ansys Workbench Additive — empowering users to further advance their additive manufacturing capabilities.

Join PADT’s Simulation Support & Application Engineer Doug Oatis for a webinar covering both the structural optimization and additive updates made to Ansys 2021 R1 including enhancements for: 

  • Process Simulation

  • Part Qualification

  • Design for AM

  • Build Setup

  • Shape & Lattice Optimization

  • And much more

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All Things Ansys 083: Digital Mission Engineering & the Acquisition of AGI

 

Published on: March 8th, 2021
With: Eric Miller, Anthony Dawson & Paul Graziani
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by Anthony Dawson, Vice President & General Manager at Ansys, and Paul Graziani, CEO and Co-Founder of Analytical Graphics, Inc. (AGI) to discuss the acquisition of AGI and what it means for those simulating in the aerospace and defense industry.

Digital mission engineering, pioneered by AGI, combines digital modeling, simulation, testing, and analysis for aerospace, defense, telecommunication, and intelligence applications to evaluate mission outcomes at every phase of a system’s life cycle. Using this tool you can evaluate the full effect of every change you make and find problems before they become crises.

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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High Frequency Updates in Ansys 2021 R1 – Webinar

Whether leveraging improved workflows or leading-edge capabilities with Ansys 2021 R1, teams are tackling design challenges head on, eliminating the need to make costly workflow tradeoffs, developing next-generation innovations with increased speed and significantly enhancing productivity, all in order to deliver high-quality products to market faster than ever.

When it comes to high frequency electromagnetics, Ansys 2021 R1 delivers a plethora of groundbreaking enhancements. Ansys HFSS Mesh Fusion enables simulation of large, never before possible electromagnetic systems with efficiency and scalability. This release also allows for encrypted 3D components supported in HFSS 3D Layout for PCBs, IC packages and IC designs to enable suppliers to share detailed 3D component designs for creating highly accurate simulations.

Join PADT’s Lead Electromagnetics Engineer and high frequency expert Michael Griesi for a presentation on updates made to the Ansys HF suite in the 2021 R1 release, including advancements for:

  • Electronics Desktop
  • HFSS
  • Circuits
  • EMIT
  • And Much More

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All Things Ansys 080: 2020 Wrap-up & Predictions for Ansys in the New Year

 

Published on: January 25th, 2021
With: Eric Miller & PADT’s Ansys Support Team
Description:  

In this episode your host and Co-Founder of PADT, Eric Miller is joined by the simulation support team to look back at the past year of Ansys technology and make some predictions regarding what may happen in the year to come.

If you have any questions, comments, or would like to suggest a topic for the next episode, shoot us an email at podcast@padtinc.com we would love to hear from you!

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