Needed: CFD analysis on a SolidWorks assembly drawing
Unfortunately I have no way to perform a CFD on my assembly since I don't have access to FloWorks (the part of Solidworks that does CFD). So I am hoping to either find some free software that can perform the CFD from my .sldasm file or someone to perform the CFD for me to determine my project's Cd.
If you want to see screenshots of the project visit the Fossil Free forum for the post that involves my custom EV build or visit the blog in my signature. Thanks! |
I've got solidworks and floworks, I'll do the calculations if you want.
I should add I am a beginner, so if you let me know exactly what you need doing I'll be happy to give it a go. |
1 Attachment(s)
Awesome Dave!
I still need to clean things up and finish the rear of the vehicle. I also want to figure out how I can direct air around the wheels efficiently, so probably in a week I will try and hit you up on that offer and I'll send you a zip file of the whole assembly. Here's some eye candy from PhotoWorks. http://ecomodder.com/forum/attachmen...1&d=1237324023 I just started playing with those tools today so I'm pretty limited on what I've been able to do with that so far. It takes my computer about 4-5 images to render the images in Photoworks, but I think they will come out really nice once I learn all the in's and out's of that program. |
My friend made a fairly basic model of his Polo and it takes about an hour to do the calculations in FloWorks, and that's on my workstation (8 x 2.83Ghz).
Once I've worked out why I don't receive an email on new posts I'll look out for your reply. |
analysis
If you bear in mind VW's 1-liter car you could easily reach Cd 0.15.If you move the wheels out away from the chassis,mono-posto style and carefully fair in all suspension and wheels,you might squeeze Cd 0.11 as with Sylph.Go to the fish section of your supermarket and buy a frozen mackerel.You can take all your dimensions from that and scale it up.
|
I'm worried that putting the wheels on outriggers will increase the frontal area in way that is not offset by the decrease in Cd.
Thoughts? |
outriggers
Quote:
|
I will have to think about it once I get a better idea on how my current build performs. The idea is to keep all costs down, so I certainly make all efforts to improve aerodynamics so that I can keep the drivetrain costs down. I think that having the wheels on outriggers and then trimming them out so that they are aerodynamic could be a bit cost prohibitive, but I think I will definitely play around with it when I get more fluent in Solidworks.
Good chance I will look into a larger 4-wheel design with fully inclosed wheels that has a bit more ground clearance then this design where the wheels will almost be like on stilts, kinda like Aptera's rearwheel except for all 4. |
Quote:
|
I'll look it up =)
|
Blue Bomber Man, you are of course aware of all of the free open-source CFD software out there aren't you ? "thumbs-up"
( I'm not good with math, so I just do 3D modeling.) |
Actually I am not aware of any program that will take a 3d cad program file and do a CFD analysis, but I would love to learn of some, thanks!
|
1 Attachment(s)
Quote:
I whipped up the attached in SolidWorks today. It needs fewer lines and more radiused edges, and then there are aerodynamically important complexities such as a radiator, suspension, &c. Without a radiator and a full engine bay, how will I know whether to build a variable-geometry grille? I don't have FlowWorks, but I would love to run several models through the CFD analysis: the attached model, three with nose-cones of three different heights, and one with a boat-tail. That would determine how effective these aero add-ons would be, and whether to try to send air over the car or under it. I'd be happy to make my .SLDPRT files available in the public domain. Anyone know of a good, free .SLDPRT of an engine, radiator, or maybe even a sophisticated model of a car? RobertSmalls |
Robert,. have you Googled "open source CFD software" ?
There is quite a selection . |
Hmm, I see that there is. Can anyone recommend an easy-to-use one that I can feed a SolidWorks or Pro/E CAD drawing into?
|
Quote:
|
If you can create a 3D model in Solidworks from your Autocad then I'll see if I can run it through the analysis. It's been a while since I used it :)
|
Quote:
|
Quote:
|
All times are GMT -4. The time now is 07:04 AM. |
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com