October 24, 2020 at 8:10 ampaola_1SubscriberHi, in Flunt with RANS is there a way to get the spatial derivatives of u' (or v', w')?nI have to get the value of the viscous dissipation in the turbolent kinetic energy (-2 mi s'ij s'ij time averaged).n
October 26, 2020 at 4:15 pmSurya DebAnsys EmployeeHello, nYou can check for the Turbulent Dissipation rate and Turbulent Viscosity Directly in Contours Section under Contours of Turbulence.nAre you performing unsteady RANS calculations?nRegards,nSuryan
October 26, 2020 at 4:34 pmpaola_1SubscriberYes, unsteady RANS calculations.nThank you. nI have to evaluate all the terms in the turbulent kinetic energy equation, and I have two terms that I don't know how to get: turbulent transport d/dxj (ui'ui'uj')/2 and viscous transport 2 mi d/dxj (ui'Sij'). All the terms are time averaged.nDo you have any suggestions?nPaolan
October 26, 2020 at 4:43 pmRobAnsys EmployeeDo any of these help? 22.214.171.124. Gradient (G) and Reconstruction Gradient (RG) Vector Macros from the UDF manual. n
October 26, 2020 at 5:27 pmpaola_1SubscriberHi Rob, thank you. With UDF I think I can only get the gradient of velocity, but not the gradient of the fluctuating velocity.n
October 26, 2020 at 6:44 pmDrAmineAnsys EmployeeIf you are doing RANS these terns are modeled one via gradient approach the other one is already available.n
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