Posts Tagged ‘SOLIDWORKS’
Wednesday, April 19th, 2017
What is a “Vortex Across a Pressure Boundary?”
In Flow Simulation, a vortex is a region in the fluid domain which causes a swirl in a region where there is asymmetric drag in the flow field. The vortex itself is an expected phenomenon which itself is not problematic. When that vortex is allowed to generate across a theoretical boundary within a CFD analysis that can cause the results to deviate from reality in the immediate vicinity of the boundary or also cause the solver to fail to produce results at all. For that reason, it is important to note where this is happening in an analysis and take steps to avoid it.
How can this be fixed?
The vortex itself is generating because of the local solid geometry near the pressure boundary of a CFD setup. If the flow through the boundary is not symmetric, a low-pressure region can generate in front of the boundary allowing fluid to pass the wrong direction through the boundary as intended. The fix for this is to “build out” the model geometry. What does this mean? The solid model needs to have more real life geometry added to the setup so the flow field can be allowed to have the vortex and then transition into a unidirectional flow.
Solution 1: Add Geometry
An example of a vortex across a boundary would be directly from the first Flow Simulation tutorial in SOLIDWORKS.
(The tutorials can be found under ‘Help’, ‘SOLIDWORKS Simulation’, ‘Flow Simulation Online Tutorial’ once the Flow Simulation add-in is turned on). The ball valve, as it is setup in the tutorial, has two lids that are positioned closely to the ball of the valve. In situations where the ball valve is not set completely open the flow through the valve is forced to be asymmetric as it passes through the pressure outlet.
The asymmetric flow out the pressure boundary allows fluid to backflow through the theoretical pressure boundary and creates the vortex that is seen below. (more…)
Tuesday, January 31st, 2017
SOLIDWORKS Electrical 2017 is here and we are super excited about some of the new features and enhancements it provides. Although SOLIDWORKS Electrical is still a relatively young product to SOLIDWORKS; it’s users have been actively putting it through its paces and making suggestions to make it even better. This year we not only see some great enhancements, we got some great new capabilities.
1. 3D Layout – Use existing assembly
You can now use an existing SOLIDWORKS Assembly to insert your electrical components to route your wires, cables, and harnesses. They have also renamed the command, it’s still under the process tab but it’s now called “SOLIDWORKS Assembly”. You can still have electrical create a new assembly or select an existing assembly from your local drive, network or Enterprise PDM.
2. Add data file shortcuts
When adding documents to your projects, such as a PDF, you can now link to the document. This is awesome because it allows you to store your reference material where you traditionally keep it instead of making copies within the project.
3. Replace attribute and renumbering documents
Both commands received huge improvements as well as new interfaces. Both make it easier to incorporate changes faster and more accurately.
Tuesday, January 3rd, 2017
Recorded Webinars – A Tool for Personal & Professional Development
It’s hard to believe 2016 has come and gone. Were you successful in completing your 2016 resolutions? I found personally, that setting obtainable goals worked best and were much more fulfilling in hindsight. Here are 3 rules I live by:
- Commit to a Resolution that is obtainable – Start Small.
- Tell everyone close to me for accountability purposes – Talk about it.
- Don’t quit when steps aren’t achieved as quickly as intended – Never Give up!
So, now that we’ve outlined how to set a resolution and stick to it, let the learning begin! Below you will find a short list of Top GoEngineer webinars of 2016.
Sit back, Grab a cup of coffee or tea, and hit play!
For this first video, you will learn about New and Enhanced Features of SOLIDWORKS 2017 according to Sean Stone, Applications Engineer. Here Sean shares some of his favorites from this years’ launch events as well as some buried in the What’s New document.
Visuals are important to the design process, stories, social media and more. They are dominating Pinterest, that’s for sure. In this webinar, you will learn tips and tricks to the Visualize Interface and ideas for new graphical content you can bring to your company.
Thursday, December 22nd, 2016
What is a Singularity?
A singularity is a function’s divergence into infinity. Simulation occasionally produces stress (or heat flux) singularities.
How do they occur? Mathematically, the solver uses matrices to represent the elastic field (displacements of the elements). When a highly localized load is applied, the gradients of the displacement vectors begin to diverge, causing the roots of the matrices to go to infinity. For a simplified explanation, see the stress equation below. Stress goes to infinity due to force applied in a very small area.
Where do Singularities occur?
Singularities are usually seen at points, edges, or reentrant corners. Reentrant corners are interior corners, with angles pointing into the part. The high stress concentrations are usually seen near 90 degree corners, but can potentially occur for any angle less than 180 degrees.
Why don’t they occur in real life?
Think of the common case of singularities created on interior corners. In software, that corner is perfectly sharp. In real life, there will always be a slight bend. Also, the part may deform slightly, or “slip”, and allow the faces of the corner to slide against each other. The slight bend and additional friction allow for a converging stress.
“Adjust your legend’s color settings to grey out above the material’s yield point. This prevents singularities from overshadowing other important stress results!” – Joe Engineer, Know It All, GoEngineer
Thursday, December 8th, 2016
It’s hard to shop for a gadget-y, tech-savvy person, but here’s a good gift guide for the nerd you love. In my family, I’m the nerd I love.
If you feel the urge to send me any of these items below, the address is 2033 Chennault Dr., Carrollton, TX 75006.
1. Anoto’s Livescribe Smartpen, $119.99
I write lists. On paper. With a pen. Writing helps me remember, while typing with my thumbs on an itty bitty screen does not. Then I struggle to coexist between a paper and paperless world. But Livescribe solves that. It’s a Smartpen that houses an infrared camera, ARM processor, Bluetooth Smart chipset, flash memory and lithium ion battery all work together to bring your notes to life on your tablet or smartphone. Android and iOS friendly.
Tuesday, November 29th, 2016
Let’s talk about your SOLIDWORKS network license and debunk those myths with facts. Which one of these 5 are you guilty of believing?
You accidentally received extra licenses (yassss!).
Not true. Only once in 5 years have I seen SOLIDWORKS write an incorrect license file. The way licenses are listed in the SNL can be misleading. Suppose you have a network license containing 1 Professional License and 1 Standard license. The SNL will show 1 Professional License and 2 Standard Licenses. Why? Because when you are pulling a Professional license, the license manager is releasing a Standard license and the Professional ADD-INS. So really the license manager listing should read “Professional ADDINS”, rather than “Professional”. You cannot pull a Professional or Premium license without pulling a Standard license.
You don’t have the ability to use SOLIDWORKS on your home computer.
Tuesday, November 1st, 2016
Motorcycle Riding – 2010 KTM SMT
For me, riding my motorcycle is having the freedom of the open road and traveling with the wind in my hair! Sounds great, right? Well, after any extended period of riding in the weather elements; physical and mental fatigue takes over, leaving the operation of a motorcycle quite dangerous.
On my quest to create comfort and extend my riding to a long haul, I decided to improve the stock windshield (or windscreen) of my KTM SM-T. This is where aftermarket parts, SOLIDWORKS and 3D printing technology takes over.
Motorcycle Windscreen: Stock vs Touring
Take a look at the stock windscreen below. It looks ergonomically ‘sporty’ but doesn’t provide much protection from the weather elements.
In comparison, you will see a touring windscreen below. This version is significantly taller but still does not provide the necessary protection from the weather elements.
Tuesday, September 20th, 2016
Plastic Part Design – A Career
Injection-molded plastic part design is a job thet tends to fall into your lap. You have zero qualifications, and yet, you are supposed to do it perfectly while blindfolded. It’s difficult to lunge forward with confidence when you are building on a poor foundation.
The result is that you proceed with the project with a “learn-as-you-go” approach. Even so, there’s still opportunity to avoid common mistakes, make smart decisions, and release a smart, young, well-prepared injection-molded part into the universe, ready to make a big impact and change the world.
Read on to learn How to Successfully Design Plastic Parts.
Tuesday, May 17th, 2016
Over the last few years, GoEngineer hosted a series of technical events in late spring. During these events, we showcased how our technology platforms work together to produce efficient workflows. Last year’s event was a little different. We packed 12 topics into 6 timeslots for a full day of learning. With over 2100 attendees during the last few events, we want thank you, our client partners, for this huge success!
Shape Your World Is On Its Way!
We are back at it this year with an exciting new project and schedule of topics. Shape Your World is the place where you can explore technology and learn processes from our experts. This is the perfect opportunity to catch-up and collaborate with old friends. You might even find a new one! With 7 time slots available starting at 9AM each day, we allow you to customize your agenda while attending several sessions that best fit your needs.
Monday, March 28th, 2016
Batman v Superman – Who will win the battle of the ages?
Batman v Superman: Dawn of Justice hit theatres worldwide. Previews clearly show Batman holding his own against Superman. As an engineer, I’m a Batman fan at heart. I want to believe that the Caped Crusader will ultimately defeat that Kryptonian. So, let’s take a look at this matchup and use engineering technology, all available to Wayne Enterprises, to devise a plan of attack.
Movie fans and comic geeks will all have their opinion on the battle of the ages. But what does science have to say? Read on…
(Source: Warner Bros.)