SOLIDWORKS Flow Simulation - Troubleshooting
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- Опубликовано: 15 июл 2024
- See more at: www.goengineer.com/products/fl...
Learn about some Tips and Tricks for preparing your Model for Analysis, Meshing and Common Error Messages that need troubleshooting in SOLIDWORKS Flow Simulation. Webinar presented by Arvind Krishnan of GoEngineer.
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Really Useful! Thanks
ive been facing the same problem and i never seen anyone face this problem : The error says ** is not laying on the boundary between solid and fluid region.
Great Work !
Thank you Salah. We appreciate you watching and your comment.
please I have a question and want you to help me.
what are the values of k and epsilon in case of turbulent flow is considered?
Those values are not Constants, so they are dependent on the factors of the specific simulation you are running and may differ from set up to set up. The comment section on a youtube video is not the best place for that level of detail. Please contact your local VAR for more in depth discussions
en.wikipedia.org/wiki/K-epsilon_turbulence_model
I'm struggling with the flow trajectories for a fan flow. When i visualize them, they are showing ONLY on the model , but not in the computational domain. Any idea why , and what i have to change to see them in the whole computational domain?
That depends a lot on context unfortunately. The best course is to get in touch with your VAR's technical support team they should be able to help you out.
can we do vibration analysis for the vibration due to air stream ?
Hi Akshay,
Flow Simulation does not make vibration data that could then be used in a vibration study in Simulation. Vibration data would need to be obtained from another source in order to input into the Linear Dynamic Random Vibration analysis of Simulation.
I am having an error message, saying "process abnormally terminated", and warning that it's showing is, "Maximum mach number achieved, flow reached supersonic condition". Can you suggest any tip regarding this?
Thanks.
Yasir,
Assuming supersonic flow is realistic, make sure you go to your General Settings and turn “ON” high mach.
Assuming supersonic flow is not realistic, I’d go through these steps:
(1) Check the boundary conditions - anything unrealistic here? Did you manually do any unit conversions?
a. Right click Input Data and go to Units. Change units here to something you can interpret easier.
b. Put in a very low flow rate or 1 atm of pressure, do you still get supersonic flows?
(2) Do you have any custom units, materials, fans etc? Switch these to a type from the default database to see if they are the problem.
(3) Do you have small regions that may be turning into mini venturi nozzles?
a. I’ve seen small gaps and o-ring grooves cause supersonic conditions when not meshed properly, or when not blocked off.
(4) What other physics are you trying to do? Rotation? Free Surface?
a. I’ve seen free surface cause supersonic conditions because the hydrostatic pressure of the liquid mixed with the gas trying to escape is causing a fast moving gas pocket.
b. Try switching boundary conditions to mass flow rates rather than volume flow rates.
c. For rotation you may need to switch to Sliding mesh rather than Averaging.
(5) Narrow down the problem. Create more lids and cut off sections of your model. Use simple flow rates and pressures. Eventually you will find the area that is causing the problem.
If all else fails reach out on the forums at my.solidworks.com or to your local reseller. Hope this helps.
trying to mix two different fluids in a y-pipe using different volume concentrations (0 and 1), but cfd results were not accurate. Pressure drop was very minimal compared to calculated value. Any thoughts?
We would need more details to be able to answer this question. The best way forward is going to be to reach out to your VAR's tech support team.
I am having a problem with simulating a heat exchanger. The hot fluid is getting cold but, the cold fluid is not getting hot at all. I have checked the boundary conditions and fluid domains; they all seem correct. Hope you have any helpful tips or any clues. Thank you in advance.
Here is a article that might help www.goengineer.com/blog/thermal-study-setup-solidworks-simulation