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.

Ansys Mechanical Selection Information: Even More Useful Than We Thought

I have always known that the Selection Information window is extremely useful, giving us properties like Surface Area, Edge length, and the distance between two selected nodes.

But it will also do a few things that I had not known about, until recently. 

Normally you can Export the Nodal Locations with a solution result plot, but for that you have to solve the model first. If you have not yet solved the model, you can still get the nodal locations using the Selection Information window, though it is a little finicky.

  1. Open the Selection information window from the Home tab.
  1. Select all the nodes by selecting one node and hitting CTRL-A.
  1. In the Selection Information window, click the ‘Node ID’ header to sort by Node ID number.
  1. Select the first cell of the data you want.
  1. Scroll all the way to the bottom of the Window, and while holding down the Shift key, select the last row of the adjacent columns that you want to select.
  1. Once selected, right-click on it and hit “Export Text File”, or “Copy” and then Paste the data into Excel.

The trick is that the “Export Text File” and “Copy” do not show up if you pick the headers to select the entire columns like you do in Excel.

You can do the same thing to thing to get the mass properties of an assembly.

Selecting bodies will give you the mass, centroid, and principal moments of inertia. You can get this in the Worksheet view when the Geometry branch is highlighted.  Unlike the Worksheet, however, we can change the options to show the Moments of inertia about a given coordinate system.

We can now export out the six moments of inertia about any given coordinate system.  Next, I will attempt the find the ACT calls to do the same thing.   Stay tuned…

General Interface & Performance Updates in Ansys 2021 R1 – Webinar

Ansys 2021 R1 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 to be impossible.

Ansys Mechanical delivers features to enable faster simulations, easier workflows, journaling, scripting and product integrations that offer more solver capabilities. Within this new release, interface and performance capabilities have been enhanced to offer greater ease of use and overall efficiency in nearly every circumstance. 

Join PADT’s Simulation Support Manager and Ansys expert Ted Harris, for an overview of what updates in this release best energize this tool, such as enhancements made to:

• Solution History

• Fluid Network Creation

• Circuits

• GPU & Solvers

• And much more

Register Here

If this is your first time registering for one of our Bright Talk webinars, simply click the link and fill out the attached form. We promise that the information you provide will only be shared with those promoting the event (PADT).

You will only have to do this once! For all future webinars, you can simply click the link, add the reminder to your calendar and you’re good to go!

All Things Ansys 081: Meshing & UI updates in Ansys Fluent 2021 R1


Published on: February 8th, 2021
With: Eric Miller & Sina Ghods

In this episode your host and Co-Founder of PADT, Eric Miller is joined by PADT’s Senior Simulation Support & Application Engineer and fluids expert Sina Ghods for a look at what’s new in this release.

For fluids simulation in this release, products can be designed faster than ever before, thanks to major physics and productivity enhancements that build upon the tool’s ​already powerful workflow and meshing capabilities.

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!



Phoenix Business Journal: ​Voice recognition, the new thing in computing

Let’s be honest, the mouse and keyboard are outdated interface methods that serve us well, but voice recognition is pretty dang awesome and efficient. In “​Voice recognition, the new thing in computing” I write an entire post using voice recognition about the pros and cons of voice recognition.  That is almost meta. Please enjoy, it was a fun one to do.