We require a good uniform mesh on fans and resistances, which can easily be forgotten by the user, causing poor results or poor convergence.
I tend to recommend 5 elements from inlet to outlet. Could this be automated in any way?
I can appreciate this would be a challenge for irregular resistances but for oblongs, possible?
Please add the show/hide functionality for volumes in the browser when in the setup phases. With ctrl/shift select as well.
This would be useful when trying to hide volumes that are very small and can't easily be selected in the graphics interface.
Envisage Uk Ltd
From what I understand, the clip feature "hollows out" the geometry and thus only the outter most surfaces of walls and BCs remain. Then it cuts these surfaces off at the clipping plane and thus you get a sealed surface of walls, BCs and clipping plane, giving an illusion of cut geometry. But when I use it, I see an anomaly there. Have a look at the attached pic.
As you can see, the walls and BCs are not cut exactly at the clipping plane and extend beyond it. This doesn't look like what I want. The workaround I am using is to adjust the position of clipping plane so that the "actual cut" is at the middle plane and finally seal it off with the middle plane, but this still leaves very small projections of these walls uncut and clabbers the view.
Can this bug be corrected please?
As a user I want to be able to access my results without needing to wait to open each one of my finished scenarios and wait for them to processed.
This can take a lot of time especially if you take advantage of 360 to run multiple simulations overnight.
We understand compiling these results without having the UI open would be difficult, but being able to tell the UI after you have opened the design study to loop through all pending jobs would save some time from having the user cycle through each finished job.
Here is the 'topic' I submitted some days ago.
Because I have to use an emispherical and thin solid dome, immersed in a fluid domain, and it is made by conductive plastic material (it is obviously orthotropic), I didn't found, reading documentation, any indication about how to build a 'Local Coordinate System'
So, I should like to know if X Y and Z axis (indicated in Material Database panel) are global or local.
If they are global, this is a serious limit to this very fine software; if not, I really will appreciate any help to resolve this issue.
the answer (by Royce Abel- Autodesk) was:
The X, Y, and Z material properties are based on the global coordinates and you cannot define local material properties.
This would be an excellent comment to add to the idea station.
So, now I ask to insert in CFD the ability to manage Local Coordinate System for Solid Material definition (but not only)
Currently, if you want to change your units, when you already have results, you need to use a support share file.
It would be a better workflow if you could change your units in your active design study even if this had to delete the current mesh and results.
We're finding that the installation process for Simulation CFD can be confusing to customers. If they order Simulation CFD Motion, Design Study Environment and a Connector, they get the same case with DVDs for all three! The case is labeled Simulation CFD. They will have three different serial numbers for the different modules. Which one do they use for installation? The answer that it doesn't matter which serial number to use is buried in the installation Readme but is difficult to find. There should be a way to improve the instructions for this installation.
Users asked for the possibility to set more standard settings, especially for turbulence models and advection schemes.
I would like the collapsible Materials/BCs/ICs/Motion/Groups folders and subsections to stay how you left them, or at least auto collapse. I've realised I spend a large amount of time collapsing 'Material' and then each group in turn to easily access the ones at the bottom - all subsections auto expand when you assign parts to a group.
Could some sort of progress bar be implimented? Ideally this would consist of 2 parts:
1) Something that says that autodesk is still working such as the spinning symbols that other software uses
2) A progress bar estimating how long is left/how many more tasks must be done before completion
I often find myself opening support files when I want to open the original simulation. This is due to several things:
1) When navigating to the location of the simulation, I always get to the support file first because it is on the level above
2) The icon is nearly identical
Speaking to colleagues, it's a fairly common problem.
The problem is that I've then got a support file for the support file created. When I was new to Autodesk CFD, I assumed that the support file was the main CFD file due to the above factors. This lead to many new support files being created.
Could you please either:
a) Put the support file within the main directory
b) Use a very different icon (preferably a different colour)
c) Only have .cfdst files shown by default when clicking 'open'. By all means have .cfz available as a separate option.
- Abdus Khan
Software Quality Assurance Co-op
Autodesk Simulation CFD
This option would be especially useful when you are running with ISC enabled or free surface to get a better idea of how long the solver has progressed.
There is a common mis-conception, especailly with free surface, that the time step is always 0.01 (if using guidelines), when it is really based on the free surface courant calculation.
Is there a way to map the velocity/pressure results from an outlet, and subsequently map the result to an inlet of some other components/systems?
An example of application would be:
a centrifugal pump is simulate to obtain the simulated fluid's behaviour (velocity/pressure) at the outlet.
Next, the same results are mapped to the inlet of a rotating fluid tank that it is attached to.
Of course, both the simulation can be done in one go, but if there are 2 or 3 different configurations for the fluid tank, but all are attached with the same pump design. It would save a lot of time by just applying the mapped results from the first simulation.
With the release of 2014 the XYZ triad was removed from the navigation cube.
Please bring this back as it is very useful when setting up models and you need to determine what your basic flow direction is. Now you need to zoom back out to look at the larger triad or find the origin triad and remember what the colors represent.
It is puzzling that while we are meshing, we have to give away a licence in solving, forcing us to stop the jobs running in the queue, just to be able to mesh. In most commercial CFD (or FEA) software packages that I know of, I see that meshing and solving are completely exclusive of each otherin a single licence.
Majority of time of every CFD engineer is occuppied in meshing at his workstation. At the same time, he can't finish his job unless these meshes are run, often in the remote cluster etc. Sorry if I sound rude, but is it me, or has Autodeksk really employed this unfair and unjust tactic to engage a solver licence in meshing, thereby indirectly forcing users to go for additional solver licences, so that they can continue both meshing and solving uninterrupted at the same time?
I know this may call for a major overhaul in code (or maybe not), but is it not reasonable to demand that "meshing" and "solving" be treated exclusive of each other?
When you clone a design with many scenario sometimes you don't want to clone everything. The ability to select clone all or clone selected so we could pick which ones to clone would quicken the cloning process. One example you wouldn't want to clone everything is when you are cloning after running a model that you saved cycles with adaptation.
Apparently the "Points" window is a fixed window. It would be nice if it was expandable so the full "Name" description can be seen (see diagram below)?
See...Can the "Points" window be expanded? ...in the Autodesk Simulation CFD discussion group for more information.
I would like to see the capability of custom fucntions. E.g. If I want to see the angle between Y and Z velocity for an inclination, I could easily create the tan inverse and view it in contor etc. Currently I have to export the results on a plane and use Mathcad to post process the contours, and this is not quick and easy.