July 22, 2019 at 4:40 amAbhi1311Subscriber
Greetings! I have a few questions so please take a look at them,
1. I am simulating gas flow inside a closed chamber with one inlet and one outlet. Earlier we were using Turbulence model but after i calculated reynolds number it came out as laminar flow. So by changing model am i going in the right direction? How important is it?
2. Also I'm planning to change the gas temperature too. As dynamic viscosity is dependent on temperature, it may change due to change in temperature which may in turn change the reynolds number so my second question is that will the flow will turn turbulent of constant flow rate after certain increase of gas temperature?
July 22, 2019 at 10:55 amRobAnsys Employee
Very roughly, running a turbulence model on laminar flow will make fluid jets etc more diffusive. Running laminar on a turbulent flow tends to either pick up transients in the flow or have poor convergence.
If you alter the physical properties you could trigger a change to turbulent flow at a constant flow, but that's for you to work out. Remember, if the temperature changes a lot you may also want to alter density.
- 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.