October 19, 2018 at 2:10 pmmsjang95Subscriber
I want to analysis car radiator
To prevent mix with air and water, i pull the pipe out to enclosure
In mesh, I made contact region
radiator wall- water
In setup, I check energy, k-e realizable enhanced wall function.
in boundary conditions, i put the velocity 3m/s in air inlet,
and in water inlet, i put the 3m/s, and temperature 90c.
I checked convection radiator wall.
but it seems there is no heat exchange
and It seems temperature is abnormally high.
in residual, the energy graph kept going up.
does anyone had these problems?
October 20, 2018 at 2:02 pmRaef.KobeissiSubscriber
Have you created a fluid domain inside the enclosure that represents the fluid circuit inside the radiator? Did you make sure you don't have any solid parts in your mesh? I think the best way to see what is going wrong is by uploading your case in here and I will try to have a look for you.
October 21, 2018 at 12:30 pmKarthik RAdministrator
Couple of quick thoughts about your case:
- Could you please share a screenshot of your computational mesh in both the water and air regions? Have you checked the quality? What is your first thickness of your boundary layer? What y+ value does this correspond to?
- Is there any specific region you are trying to have an interface in your model? You might want to take a look into creating a conformal mesh. You should be able to do this automatically in WorkBench Meshing if you've enabled share topology in your CAD geometry.
- A cursory glance at your temperature contour seems to indicate that your model is not converged. Your residual comment supplements this. Please elaborate on your boundary conditions. Please share the relevant residual and monitor plots here with us.
- If you model set-up is right and if your mesh quality is acceptable, you might want to turn off the energy equation and solve just the flow field first. Once your flow field is converged, you can enable the energy equation to see if you are able to achieve convergence.
- You do not need to have a protruding inlet and outlet regions in your computational domain. These boundaries can be begin where your enclosure surface does. This will not impact the results your are getting. It is just a minor point in your case.
Please provide some more info regarding your model for us to help you here.
September 28, 2019 at 7:59 amAnzamanRiad10Subscriber
i have same problem with meshing. i created fluid domain too.But the mesh is not completing with default mesh setting
- You must be logged in to reply to this topic.
Earth Rescue – An Ansys Online Series
The climate crisis is here. But so is the human ingenuity to fight it. Earth Rescue reveals what visionary companies are doing today to engineer radical new ideas in the fight against climate change. Click here to watch the first episode.
Subscribe to the Ansys Blog to get great new content about the power of simulation delivered right to your email on a weekly basis. With content from Ansys experts, partners and customers you will learn about product development advances, thought leadership and trends and tips to better use Ansys tools. Sign up here.
- Suppress Fluent to open with GUI while performing in journal file
- Floating point exception in Fluent
- What are the differences between CFX and Fluent?
- Heat transfer coefficient
- Getting graph and tabular data from result in workbench mechanical
- The solver failed with a non-zero exit code of : 2
- Difference between K-epsilon and K-omega Turbulence Model
- Time Step Size and Courant Number
- Mesh Interfaces in ANSYS FLUENT
- error in cfd post
© 2023 Copyright ANSYS, Inc. All rights reserved.