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Owen Patterson
Добавлен 14 апр 2013
Видео
Star CCM+ Tutorial 2022
Просмотров 29 тыс.Год назад
This is how I set up and run full car simulations in Star CCM . I’m using build 17.02.008 which includes Siemens’ most recent meshing pipeline.
Star CCM+ Tutorial
Просмотров 14 тыс.3 года назад
This is a thorough guide to how we create simulations here at GTMS. How to make a wing in Solidworks: ruclips.net/video/g7xAA9FgdzE/видео.html Another good Star Tutorial that I followed initially ( this is also an FSAE car which is nice): ruclips.net/video/9MYVeklXDh4/видео.html
Hello! I started learning to use star ccm from your video. I want to learn to use it for my formula student team, but currently we dont know how to ask siemens for a free license. How did you or your team got the license?
Hey broski, I’m planning to model a Reentry vehicle wing in starCCM, I was wondering if we could jump on a call on how I can achieve that. There’s are certain limitations I’m facing currently mainly because it’s a hypersonic simulation. Looking fwd to hearing from you:)
As a formula student aerodynamic team member thank you a lot for sharing this tutorial
Hello, how can i dowload this program ?
Hi Owen, thanks for this tutorial, I'm just curious that what CAD software do you use? When I import my CAD, I found that all my surface names are gone, I have to split the body for surfaces. I tried imported CAD through igs, stl, stp. None of these formats can support my named surfaces. Do you know how to deal with this? Thanks!
where can I get the model?
Hi really amazing video i was trying it for my project and i got a small issue , its showing floating point error has occurred , non-finite residual (Tdr) was added by star. keturd solver , how to solve the issue can use please help me with it
42:54
Can you please make a video on how to do a skidpad CFD fro aero validation and the sideforces
Congrats¡¡ Very useful and fulled video¡¡ But I have a question: why your color maps for the velocity are like the streamlines and the colors were combined in 1:01:19? How did you do that? I consider it very important because i think its easier to visualize the flow. Thanks beforehand
Amazing video!!! Thank you so much!!!
hello, good job and tutorial, could I get the cad model?
hi, would you mind to tell us a bit about your computer spec ?
where I can get the CAD model?
Hi, very nice tutorial for Star CCM! I like it the most from all the other tutorials! How about the tutorial with the porous media? I would like to see you solving these complex things in the sim. Thank you for tips in this and all your folowing tutorials.
I want to create body-axis drag coefficient how to do
Hi, i tried your previous tutorial and it was helpful. I am trying to simulate a formula 1 car. when following this tutorial, i ran into the issue 'Invalid index (invalid)' when i tried to do the boolean subtract with the body and the domain.
Hi, I am finding this video really useful. However, when I try to generate volume mesh I get this error 'ERROR region =air is not closed'. Could you please help me with this, I am very new to star ccm and need complete the project in 2 days. Thank you
If your region isn’t reading as closed you may be missing a face in the geometry feeding into the region, or that geometry isn’t manifold. Star needs to take in your geometry subtracted from a big box that essentially creates a single watertight part to mesh. If your region isn’t closed you’ll need to check and make sure that final part is indeed watertight
Nice video man Could you provide me the cad file that you have used?
Thanks, glad it was helpful! Unfortunately I’ve got to keep these designs a bit secret since we are actively racing this car. My chief engineer already gets mad when I put these haha
@@owenpatterson9355 i can understand still thank you for the reply
Hi Owen, fellow FSAE guy here from germany. First of all, big thanks for that tutorial, really helped me in switching to StarCCM. I would like to point you to something that i realized with your model. Airfoils and chassis are all really detailed, but the driver is not really, why? I have found, that the actual helmet and mainhoop padding negatively interact with the rear wing in quite a big way, as they effectively close the cross section inside the mainhoop. Also, the mounting of the wings can have quite an effect, if one runs a "plate-style" solution. We got some props from Aero judges in FS Spain for running sims with a "real-world" driver and proper wing mountings (most teams seem to neglect that). I was thinking about cornering simulations with roll, pitch and yaw, but am unsure about the domain setup. Would you consider a block domain with the full car at an angle (front wheels turned in too) sufficient? That would at least come close to what you can replicate in a wind tunnel. Thanks!
I personally haven’t seen a huge difference in running a helmet versus an accurately sized sphere and we have a headrest in our CFD bodies since that seems to make the biggest impact for the rear wing. That said this model was from pretty early in the car’s development cycle and I add in that detail, including a proper driver, helmet and mounts, later in the cycle when these things are fleshed out. We also simulate both cross wind (yaw) and cornering throughout our design process and they are both really important to optimize for. I’ve heard a lot of people make the assumption that yaw insensitivity and cornering insensitivity are equivalent, but our sims don’t really bear that out so we do both independently. Cross wind is just a simple rotation on the domain, and for cornering we use a circular domain with an inlet condition that defines velocity relative to the radius of the turn. That sim also includes transformations for steering, body roll, and understeer/oversteer so that we can feed those sensitivities back to suspension
Can someone help me to install star ccm+
Very detailed tutorial! Thanks for the hard work.
nice vid broo
Make 1000 cfd videos on star ccm... Take respect
You re an absolute legend for this video mate!
that rear wing is intriguing im currently designing my team's rear wing, but unlike yours, we use very high camber custom airfoils that were inspired by selig s1223. you seem to be using something that vaguely resembles NACA 6412 for the main element and clearly some custom airfoils for your flaps, along with that slat. My question to you (as you do seem to be alot more experienced than me) is: for rear wing mainplanes do you recommend low camber airfoils at low AOA to allow more space for flap airfoils to be present? or perhaps a large chord high camber airfoil with a very small flap? does that tiny slat near the leading edge of your rear wing increase performance significantly? our team is using star ccm+ as well, if you have any advice for me about the software too i would definitely appreciate it! thanks
Hey, I won't go into too much detail about our designs since my chief already hates that I make these videos haha. This wing specifically doesn't actually have any custom airfoils, though we are migrating to custom airfoils for our next car. I tend to prefer lower camber airfoils for our wings because they tend to be easier to manufacture and we don't have any limitations on the number so realistically you can build a high camber wing with as many airfoils as you want. The slat doesn't have a huge performance effect, but it helps drive flow down under the wing behind the driver's head. It's also pretty low impact to add if you already have a mold in work for an airfoil with a short chord. That's the case with this wing, the final element and the slat use the same profile. My only real advice would be to run as many sims as you can and keep pushing your breadth of knowledge on Star. This software can do more than you'll ever be able to grasp so there's always something to learn and apply to the car to make it better.
Hi, i used to simulate with an s1223 too, but switched, because they are incredibly hard to manufacture with that tight high camber trailing edge. Switched to an Eppler 420 with 380 mm chord as rear wing main and two 170 mm chord flaps with high camber. Slat has almost no effect in that setup. Try to look for profiles with bigger leading edge radii, they are way easier to manufacture (especially mold).
Thank you for making all of your videos! Been super helpful for my senior design project
Glad to hear it, hope the project goes well!
Great Owen . Can measure drag coefficient with star ccm ?
Star has a force coefficient report option right where I pulled the force reports in the video. You can also run a frontal area report to use in the Cd report. There are a few more inputs to a coefficient report but the setup is generally the same as a force report
hello, how we can create same model for dirty air (like following car senario)
Just copy your model and place two in the simulation, that’d give you the most accurate data on following
@@owenpatterson9355 could you make a sample video? If possible
Hey everyone, I made a new tutorial with more up to date meshing procedures! Here is the link to that video: ruclips.net/video/NpWgfA1xtWk/видео.html
Great Tutorial . Do you have a tutorial or project about soccer ball drag force?
I’ve never done a soccer ball sim, but the process would be pretty similar. You wouldn’t need the rolling floor in the domain and you can use a local rotation rate if you want to simulate the ball spinning, this is what we do for tires on cars
Nice video, I found it useful
GTMS - Georgia Tech??
Yeah I’m the Aero Lead for the the team right mow
why dont you subtract the block from the car model?
The block is the domain in which fluid flows, so you want to create a surface inside it with the body being tested. I think you’d have some issues with your output part and region going the other way
Sorry i meant subtraction the car from tunnel.. i cant see this process in video.. you added big tunnel but the car is still existing in this tunnel but the flow domain should be represented in the region where the interior of the car has to be avoided.
@@emregungor2969 did I use a subtract at all, it’s been a while since I made this and I use different procedures now
@@owenpatterson9355 no u didnt subtract it. But somehow it seems star deleted interior of car region.
@@emregungor2969 oh ok, well since the test body is completely within the domain, the surface wrapper just goes all the way around it to make the volume without issue. Our SAE team uses a subtract on half car models where the function remove half the car from the domain nowadays
excellent, I used this tutorial for my CFD project