Spray drying of milk
 

Hello ,
Iam working on spray drying of milk in fluent. Iam new to fluent. Can you suggest me how to add material (milk droplets ) in Ansys.

Thanking you
Subash

Droplets
 

For spray drying, you need to use Discrete Phase Model. Once enabled, you need to create injection wherein you can specify the flow rate, location, temperature, diameter, etc. for milk droplets. There is a spray dryer tutorial available on Ansys site.

Properties
 

Once you enable DPM, the material chosen for the injection will appear under Materials. You can change the properties then. For evaporation and drying, you will have to enable different types of particles. I'd suggest you to do it one step at a time. First track all milk droplets without any evaporation. Learn a little more about how to setup and post-process. Then use droplet type available within DPM Injections to model evaporation.

I'd recommend using Forum instead of PM so that others could learn as well.

Thank you Vinerm.
I have done as you said.
Droplet type ensures complete drying of droplet.
But I want only volatile part of droplet has to be evaporated, while solid part should come out as particle.

Volatile Fraction
 

You need to specify the volatile fraction in the Materials for the droplet material. Default value might be 1.0 Change it to the volatile fraction and only the volatile fraction will evaporate. Solid will remain.

Thanks for the explanations. Could you please advise where the tutorial can be found in the Ansys website?
Cheers,

Spray Drying
 

A relevant tutorial is available at Customer Portal.

https://support.ansys.com/AnsysCusto...FLUENT/2046025