Reference value for y+ based HTC?

- February 11, 2021 at 9:53 am
  
  KORAY2255
  Subscriber
  
  Hi all,nTo obtain a y+plus based htc, it is necessary to specify a reference value. How to determine this value?nAnother question, As I observed, I think this method gives unrealistic values for htc in k-omega SST where y+plus must be lower than 1, do you agree?nThanks.n
- February 11, 2021 at 11:33 am
  
  Rob
  Ansys Employee
  
  The documentation will show the definition of the term, along with the terms. nDepending on the reference value used either in the code or the experiment it's common to see some variation. n
- February 11, 2021 at 11:51 am
  
  KORAY2255
  Subscriber
  
  I could not find any explanation both in the documentation & your answer.nAs an ANSYS engineer, how do you use this method (y+ based heat transfer coefficient) in your simulations?n Is it usable for all turbulence models, how?nThank you.n
- February 11, 2021 at 2:08 pm
  
  Rob
  Ansys Employee
  
  I don't, I report the heat flux. HTC is a derived coefficient used in comparisons and needs to be used with care when comparing with other data. Colleagues use various HTC reports based on what is needed in the models and the application they're working on. nhttps://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v211/en/flu_ug/flu_ug_fvdefs.html should give you the definition, and it's found in the Wall Fluxes post processing tab. nn
- February 12, 2021 at 8:06 am
  
  KORAY2255
  Subscriber
  
  I don't have access the link you sent. Could you please share the content. I already know how to report that value. Besides, heat flux cannot be used for all of the problems.n
- February 12, 2021 at 9:00 am
  
  DrAmine
  Ansys Employee
  
  In Fluent, Click on F1 to access the online help.n
- February 12, 2021 at 11:43 am
  
  Rob
  Ansys Employee
  
  https://forum.ansys.com/discussion/22563/using-help-with-linksn

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