Units of Scalars

- December 9, 2020 at 2:00 pm
  
  Sacha17
  Subscriber
  
  Hello everyone !nI want to study the dispersion of a pollutant in the atmosphere. My first question is about the relationship between Mass Flow Rate and User-Defined Scalars boundary Value (User scalar0).nAnd secondly what is the unit of the scalar that gives us FLUENT results.nThank you in advance for your help.n
- December 9, 2020 at 4:33 pm
  
  Rob
  Forum Moderator
  
  If you're modelling pollutants I'd use species. n
- December 9, 2020 at 5:02 pm
  
  Sacha17
  Subscriber
  
  Thanks Rob for your answer, can you clarify me more I'm not very skilled in Fluent. n
- December 9, 2020 at 5:03 pm
  
  Rob
  Forum Moderator
  
  Click on Help and do the tutorials: there are a few on species modelling, just ignore any steps that use reactions! n
- December 10, 2020 at 10:51 am
  
  Sacha17
  Subscriber
  
  Please what about the relationship between Mass Flow Rate and User-Defined Scalars boundary Value (User scalar0)?n
- December 10, 2020 at 10:51 am
  
  Sacha17
  Subscriber
  
  I proposed that we have only one phase, do we have to go through the specie model?n
- December 10, 2020 at 11:49 am
  
  Rob
  Forum Moderator
  
  What about the relationship? Read the documentation, we set a value on the boundary (as always) which determines how much material enters the domain. nOne phase is fine, we tend to use species for very small droplets and/or gases especially at this sort of scale. n
- December 16, 2020 at 4:10 pm
  
  Sacha17
  Subscriber
  
  Thank you Rob, I've read Help but I can't find a convincing answer. n

Viewing 7 reply threads

You must be logged in to reply to this topic.

Ansys Innovation Space

SimACE-23

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