November 10, 2022 at 1:44 amnguy3394Subscriber
Say I have a acrylic rod that have a volumetric heat source at one end, and all the other surfaces are exposed to still air at room temperature. How do I setup the wall boundary condition correctly for this natural convection? When running the calculation, it is always the case that the rod temperature rise up infinitely without ever reaching a steady state. Thank you.
November 10, 2022 at 4:23 pmRobAnsys Employee
The wall boundary condition looks feasible. Have you turned on gravity and a temperature dependent air density?
November 13, 2022 at 12:13 amnguy3394Subscriber
gravity is on. Do I have to model an air block completely encasing the rod?
November 15, 2022 at 10:06 amRobAnsys Employee
If you want to model the buoyant flow around the rod. Otherwise, a convection boundary on the "wet" faces should be OK if you can find the heat transfer coefficient.
- You must be logged in to reply to this topic.
Simulation World 2022
Check out more than 70 different sessions now available on demand. Get inspired as you hear from visionary companies, leading researchers and educators from around the globe on a variety of topics from life-saving improvements in healthcare, to bold new realities of space travel. Take a leap of certainty and check out a session today here.
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
- Heat transfer coefficient
- What are the differences between CFX and Fluent?
- Floating point exception in Fluent
- The solver failed with a non-zero exit code of : 2
- Getting graph and tabular data from result in workbench mechanical
- Difference between K-epsilon and K-omega Turbulence Model
- Time Step Size and Courant Number
- Mesh Interfaces in ANSYS FLUENT
- error in cfd post
© 2022 Copyright ANSYS, Inc. All rights reserved.