Disappearance of low Re damping option from Fluent 2022 R2

Professor_Paradox_ · May 30, 2023, 11:35

Hello!

I have been trying to simulate flow past a cylinder with Re = 26700 using three turbulence models, namely, k-w SST, k-e realizable with enhanced wall treatment (henceforth referred to as KEEWT) and Spalart-Allmaras. Now in the past versions of Fluent, I have seen that k-w SST and Spalart-Allmaras had Low-Re correction and Low Re damping options respectively (I assume they serve the same purpose). Given that my maximum y+ is approximately equal to 0.6, I wanted to switch this functionality on for my k-w SST and Spalart-Allmaras runs. I was able to do it for k-w SST but I could not find the option for Spalart-Allmaras in the version of Fluent I am using, i.e., 2022 R2. I have gone through the user guide and there is no mention of the absence of this feature. Does it mean that they have removed the option, given that it is a low-Re turbulence model?

Thank you.

Professor_Paradox_ · June 2, 2023, 05:14

Nevermind, the engineers at ANSYS helped me resolve the issue. Thank you!

May 30, 2023, 11:35	Disappearance of low Re damping option from Fluent 2022 R2	#1
Professor_Paradox_ New Member Pritesh Ramya Join Date: May 2023 Posts: 2 Rep Power: 0	Hello! I have been trying to simulate flow past a cylinder with Re = 26700 using three turbulence models, namely, k-w SST, k-e realizable with enhanced wall treatment (henceforth referred to as KEEWT) and Spalart-Allmaras. Now in the past versions of Fluent, I have seen that k-w SST and Spalart-Allmaras had Low-Re correction and Low Re damping options respectively (I assume they serve the same purpose). Given that my maximum y+ is approximately equal to 0.6, I wanted to switch this functionality on for my k-w SST and Spalart-Allmaras runs. I was able to do it for k-w SST but I could not find the option for Spalart-Allmaras in the version of Fluent I am using, i.e., 2022 R2. I have gone through the user guide and there is no mention of the absence of this feature. Does it mean that they have removed the option, given that it is a low-Re turbulence model? Thank you.

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June 2, 2023, 05:14		#2
Professor_Paradox_ New Member Pritesh Ramya Join Date: May 2023 Posts: 2 Rep Power: 0	Nevermind, the engineers at ANSYS helped me resolve the issue. Thank you!