Ansys Discovery Fluid(In depth tutorial Fluid)

- November 24, 2021 at 4:55 am
  
  smjang
  Subscriber
  
  Hello
  I have a question for you while educating customers with the Ansys Discovery example.
  The material I referenced is an example of fluid analysis.
  (In depth tutorial -> Fluid -> 2020 r2 part4 -> 1:58)
  (Discovery In-Depth – Fluids)
  An example training was conducted with reference to this video, but I couldn't confirm it before, but now I see that the fluid is flowing backwards in the direction of the outlet. The same reverse flow is occurring in the example video.
  The trainees asked about this, but I didn't know how to respond.
  Please explain this phenomenon.
  Then, we will refer to it in the next training.
- November 24, 2021 at 5:44 am
  
  Subashni Ravichandran
  Ansys Employee
  
  Hello smjang
  
  Although, the particles seem to be moving backward that is not actually the case.
  
  The particles in that region are actually reducing as the velocity in that region is starting to go out of range. (closer to zero).
  
  For a better picture of the direction of flow I would recommend you use the vector result representation.
  - November 24, 2021 at 5:49 am
    
    smjang
    Subscriber
    
    Subashni So, can this part be improved in the next version to make it easier to check? In a way, it seems that we have no choice but to explain to the trainees that it is a bug on the display.
- November 24, 2021 at 5:55 am
  
  Subashni Ravichandran
  Ansys Employee
  
  Hello smjang
  
  It is most definitely not a bug.
  
  In some fluid cases, there may a back flow as well near the outlets due to pressure differences in the fluid region.
  
  Extending the fluid volume near the outlet in such cases can help avoid back flow.
  - November 24, 2021 at 5:59 am
    
    smjang
    Subscriber
    
    Subashni Thank you for answer. We will refer to it in the next training. thank you.

Viewing 2 reply threads

You must be logged in to reply to this topic.

Ansys Innovation Space

Boost Ansys Fluent Simulations with AWS

Computational Fluid Dynamics (CFD) helps engineers design products in which the flow of fluid components is a significant challenge. These different use cases often require large complex models to solve on a traditional workstation. Click here to join this event to learn how to leverage Ansys Fluids on the cloud, thanks to Ansys Gateway powered by AWS.

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.

Ansys Blog

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.

Trending discussions