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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Roughness constant › Reply To: Roughness constant

September 20, 2024 at 6:54 pm
sjohn
Subscriber

The second fluid has surface tension similar to water but the visocsity is more sensitive to temperature. For example, vicosity reduces to 1/3rd of the initial value when the temperature rises from 20 to 50 C. My simulation is being run at room temperature so unsure if viscosity dependence of temperature is a big in sirl atomizer modeling. 
We suspect the fluid is slightly shear thining based on test data. Is there a way to account for this in material properties or the viscous model? Thanks.