need help with the minimum orthogonal quality value and maximum aspect ratio

- October 31, 2018 at 12:44 pm
  
  kalyan
  Subscriber
  
  I'm using the ansys 19.1 academic version and i am getting a value for min orthogonal quality as 0.02 and aspect ratio as 25.01 when I tried to do the analysis.
  
  I need to know what are the best values possible and attainable for the model in the attachment (i.e. the geometry) and also the way to improve the value of min orthogonal quality if required.
  
  Please do help!!!
- October 31, 2018 at 12:52 pm
  
  Naresh Patre
  Ansys Employee
  
  Hello kalyan,
  
  Can you upload a few snapshots of the mesh that you generated? It will help us to provide better suggestions.
- October 31, 2018 at 2:31 pm
  
  kalyan
  Subscriber
  
  Thank you Mr. NMPatre for your response.
  
  please find the snapshots below
  
  front view
  
  isometric view
- October 31, 2018 at 3:40 pm
  
  Rob
  Ansys Employee
  
  I suspect you're growing the mesh too quickly or don't have enough cells around the object in the middle. Check your minimum cell sizes and growth rate. Also please confirm you've got the meshing tool set to CFD.
- October 31, 2018 at 5:24 pm
  
  kalyan
  Subscriber
  
  Sir could you please elaborate as you said "Also please confirm you've got the meshing tool set to CFD. "
  Sir im a beginner so please do elaborate it.
  Thank you
  Regards Kalyan
- November 1, 2018 at 3:57 am
  
  Keyur Kanade
  Ansys Employee
  
  Hello,
  
  Please have a look at following video.
  
  Please try to get min orthogonal quality to 0.1 for fluids simulation.
  
  Regards,
  
  Keyur
- November 1, 2018 at 3:19 pm
  
  kalyan
  Subscriber
  
  sir,
  
  Is 0.1 a good value for the min orthogonal quality?
- November 1, 2018 at 4:27 pm
  
  Rob
  Ansys Employee
  
  It's acceptable, ideally it wants to be higher. Have you gone through the tutorials that come with the R19 documentation and that are posted elsewhere on the community?

Viewing 7 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