Search found 108 matches

by hooshsim
Sun Feb 18, 2024 8:08 pm
Forum: Help on using FreeCAD
Topic: Having Issues with Loft Operation
Replies: 7
Views: 560

Re: Having Issues with Loft Operation

How did you downgrade to wires. Not an expert here
by hooshsim
Sun Feb 18, 2024 7:36 pm
Forum: Help on using FreeCAD
Topic: Having Issues with Loft Operation
Replies: 7
Views: 560

Re: Having Issues with Loft Operation

There should have been no need to break it up into multiple files. But, I'm guessing the reason the loft doesn't work is that the Loft tool needs to have all the edges created in the same order. Since this is what I got after getting 3 of them in a single file, I'm guessing the edges aren't in the ...
by hooshsim
Sun Feb 18, 2024 7:32 pm
Forum: Help on using FreeCAD
Topic: Having Issues with Loft Operation
Replies: 7
Views: 560

Re: Having Issues with Loft Operation

Any suggestions how to fix this? I have no control over creating these section. They are generated by intersection of two parts.
by hooshsim
Sun Feb 18, 2024 7:14 pm
Forum: Help on using FreeCAD
Topic: Having Issues with Loft Operation
Replies: 7
Views: 560

Having Issues with Loft Operation

Hi, I am having difficulties generating a loft through 5 sections/surfaces. I can, however, create a successful loft through any two sections, but not through all 5 sections. Can anyone help me with this problem? I have saved each section individually to reduce the file size. Thanks in advance. FC V...
by hooshsim
Sun Jun 11, 2023 3:03 pm
Forum: CfdOF / CFD
Topic: Ruler on mesh gives incorrect distance
Replies: 2
Views: 1653

Re: Ruler on mesh gives incorrect distance

I can not duplicate your issue. Part ruler and mesh both display the same info without zooming in.
by hooshsim
Sun Jun 11, 2023 1:21 pm
Forum: CfdOF / CFD
Topic: Looking for a FreeCAD/cfdof example using Sliding Mesh
Replies: 0
Views: 2286

Looking for a FreeCAD/cfdof example using Sliding Mesh

Hi,
I’m trying to model and run an axial fan installed in a wind-tunnel to predict performance characteristics of the fan. I understand that simplest approach would be using sliding (dynamic) mesh. Does anyone know or have a model setup in FreeCAD/cfdof to share? Appreciate your help.
by hooshsim
Fri May 19, 2023 10:14 pm
Forum: CfdOF / CFD
Topic: Error when start running solver
Replies: 5
Views: 1179

Re: Error when start running solver

Changed mesh density to 5mm for base and 0.5 for refinement. It worked and converged
by hooshsim
Thu May 18, 2023 11:17 am
Forum: CfdOF / CFD
Topic: Flow Through an axial fan
Replies: 7
Views: 1763

Re: Flow Through an axial fan

agar wrote: Thu May 18, 2023 7:58 am A fan can not be modeled with just rotating wall. Maybe a tesla turbine not a fan.
You need at least MRF (as far as I know not supported with cfdof). I find youtube tutorial misleading
Agreed!
by hooshsim
Wed May 17, 2023 5:15 pm
Forum: CfdOF / CFD
Topic: Flow Through an axial fan
Replies: 7
Views: 1763

Re: Flow Through an axial fan

I recorded a tutorial about the simulation of a wind turbine. You can find the tutorial here: https://youtu.be/Q10MbSFEiEM This solution is a simple solution, a "high end" solution would be to use a rotating mesh with Arbitrary Mesh Interface (AMI). This solution is not supported by the c...
by hooshsim
Wed May 03, 2023 7:10 pm
Forum: CfdOF / CFD
Topic: Fan Simulation Resulted in Pressure Loss Instead of Gain
Replies: 8
Views: 1482

Re: Fan Simulation Resulted in Pressure Loss Instead of Gain

Sorry, I did not have the time and the motivation to let your example run. In general, I can recommend that you try out models with few elements and simple geometry as a first step in order to gain experience. I made a video about the opposite case - wind turbine. Did you watch this video? You have...