""The following materials require Viscosity to be defined:Steel""

visitor · September 4, 2016, 04:55

This subject has been discussed before, but still not clear for me.

Using CFX, steel dispersed solids in water. Got the error message shown above, but if it is SOLID steel what Viscosity can you enter?

Thanks in advance.

visitor · September 4, 2016, 08:26

I have enetered 0.1 Pa s for dynamic viscosity which is similar to crude oil at -15C (iced) and behaves like a solid, a fair assumption for sand grain. Possible to try higher values like 1 for heavy crude at -15C. Information can be found in text books.

To do the above, select USER material.

Please let me know if there is a better way.

visitor · September 5, 2016, 04:21

Through User material selection , if for example steel dispersed solids. Call the material my-metal, copy and past all the needed steel properties from the software Steel material data base. and then run. Did not get the viscosity warning message.

PietW · June 23, 2021, 11:34

thank you, I just used that Information to get a dispersed solid working in my model!

Martin_Sz · June 25, 2021, 06:30

Do U try this problem to solve in Fluent ???

September 4, 2016, 04:55	""The following materials require Viscosity to be defined:Steel""	#1
visitor Senior Member AH Join Date: Apr 2014 Posts: 287 Rep Power: 0	This subject has been discussed before, but still not clear for me. Using CFX, steel dispersed solids in water. Got the error message shown above, but if it is SOLID steel what Viscosity can you enter? Thanks in advance.

September 4, 2016, 08:26	Possible solution	#2
visitor Senior Member AH Join Date: Apr 2014 Posts: 287 Rep Power: 0	I have enetered 0.1 Pa s for dynamic viscosity which is similar to crude oil at -15C (iced) and behaves like a solid, a fair assumption for sand grain. Possible to try higher values like 1 for heavy crude at -15C. Information can be found in text books. To do the above, select USER material. Please let me know if there is a better way.

September 5, 2016, 04:21	Another attempt	#3
visitor Senior Member AH Join Date: Apr 2014 Posts: 287 Rep Power: 0	Through User material selection , if for example steel dispersed solids. Call the material my-metal, copy and past all the needed steel properties from the software Steel material data base. and then run. Did not get the viscosity warning message.

June 25, 2021, 06:30		#5
Martin_Sz Senior Member Marcin Join Date: May 2014 Location: Poland, Swiebodzin Posts: 313 Rep Power: 13	Do U try this problem to solve in Fluent ??? __________________ Quick Tips and Tricks, Tutorials FLuent/ CFX (CFD) https://howtooansys.blogspot.com/

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June 23, 2021, 11:34		#4
PietW New Member Piet Wolff Join Date: Aug 2020 Location: Germany Posts: 4 Rep Power: 6	thank you, I just used that Information to get a dispersed solid working in my model!