[M3sh_Master-Ti]

Dear All,

I am trying to simulate non-newtonian fluid atomization using Converge, mainly shear-thining material with high viscosity and visco-elasticity. However I did not find anything in the manual related to the topic of non-newtonian material. I am wondering if it is possible to simulate the atomization of non-Newtonian fluid using Converge? And if yes, where can I find some related guideline?

[bb91936762]

Hey Zhe Li,


Currently CONVERGE does not support parcel simulation for non-newtonian fluids. A pure VOF simulation should work with non-newtonian fluids. Unfortunately we do not have any information relating to the non-newtonian atomization.

This is the first time we have encountered such a request with non-newtonian fluid atomization. Can you please let us know about your case and application so we may suggest some solutions?


Thanks,

[M3sh_Master-Ti]

Hi Basu Parmar,

Thank you very much for your reply!!

I am currently in the stage of exploring the ability of Converge, but my final goal is to simulate the atomization of non-Newtonian (mainly high viscous, shear-thinning, and visco-elasctic) fluid using a self-designed twin-fluid atomizer. About the non-Newtonian simulation, I am wondering how I can input the properties of the non-Newtonian fluid, for example, if I am using Herschel-Bulkley Model to model the properties, how should I input the parameter of the equation?

PS: I am wondering if there exist any example case for me to try the non-Newtonian simulation for Converge?

Wish you a nice day!!

Best wishes,
Zhe Li

[angela.wu]

Hi Zhe Li,

You can add a liquid or parcel species to the simulation, and add the non-Newtonian model properties. In Studio, if you add a non-Newtonian species in Materials --> species, the non-newtonian models will be enabled in the Materials --> liquid simulation window. Then you can choose Herschel-Bulkley model and add the paramaters in there.

Best,

Angela

[M3sh_Master-Ti]

Hi Angela!!

Thank you very much for your help! I am wondering if Converge has any related material or example cases I can start trying non-Newtonian simulation with?

Best wishes,
Zhe Li

[angela.wu]

Hi Zhe Li,

Our non-newtonian model implementations are described in the CONVERGE manual, chapter 25, which can be accessed in Studio by going to Help --> CONVERGE manual (PDF). Other than that, I do not have other materials or example cases to share.

Best,

Angela

[angela.wu]

Actually, Studio 3.1 has an non-newtonian fluid example case. Please open File --> Load example case --> Pumps --> FDA blood pump centrifugal transient RANS.

[M3sh_Master-Ti]

Thank you very much!!!