NonNewtonian fluids
Has anyone figured out any limits for the parameters used for NonNewtonian fluids simulations?
Thanks a lot! 
Re: NonNewtonian fluids
What types of limits are you referring to?

Re: NonNewtonian fluids
I am refering to limits for the parameters. Like what is the min and max for the n,μ0 etc. Is there a limit, above which, the convergence will not be feasible?

Re: NonNewtonian fluids
yes, I even do not know where can I extract these parameters in an appropriate value. mu1,muc00,... if you know a useful reference please refer me to that. thank you my friend.

Re: NonNewtonian fluids
Hi! The equation that the software uses to handle the nonnewtonian fluids is the generalised carreau model. if you click on the little arrow that you can find in the menu, you will see the equation. I think that from that point, all you have to do is to adapt the equation that you have to the carreau model, and find the correlations between the different parameters. Not an easy work I would say, but it's the only way. I still have problems, and I cannot simulate nonnewtonian.. I think that they should have implemented several common models (such as herschel bulkley or power law or even bingham to make our lives easier). I hope I shed some light.. I also hope to get some help on this from anyone who has overcome this problem...
Thanks! 
Re: NonNewtonian fluids
Hello Nikolaos, Email FLOW3D(R) support and I will send you an example of how to implement a thixotropic fluid, at least to give you an idea of how to use the Carreau model. Melissa

Re: NonNewtonian fluids
Thank you Melissa! I will do it right now!

Re: NonNewtonian fluids
Hello AMP, If you send an email to support I will send you a documentation on how to implement thixotropic fluids to give you an idea for nonnewtonian. Best Regards, Melissa

Re: NonNewtonian fluids
Hi,
I am learning FLOW3D, and I have to use tixotropic fluid.I have read your post about the tixotropic fluid. So,If you do not mind Melissa, Could you send me an example of how to implement a thixotropic fluid? Thanks in advance. Ainara 
Re: NonNewtonian fluids
hi

Quote:
I want to simulate the behavior of semisolid metal during casting as NonNewtonian fluids. I want to use FLOW3D for that purpose, but have no idea how to input Carreau model parameters. So can you advice on this? My Email is pesaramoli@gmail.com Thank you. 
All times are GMT 4. The time now is 11:51. 