[siddhuV]

I wonder if there's a option in fluent to add a material with 5% nano particles and 95% PCM, rather than giving effective properties of the mixture. If there's any possible method please let me know, I would be obliged to you. Thank you for going through my problem.

[bhargavbharathan]

Hi,

Have you tried using Eulerian multiphase with injected nano particles?

-BB

[mehradahmadi]

Hi all, I want to do a project about Numerical simulation of heat exchangers with phase-change material with the help of Fluent.
For example, air from the inside of phase-change material between two parallel plates are passed, and We want more cool air to keep output As shown below:

What options should be activated and how that process performed?Please please help me , If it is possible….
thank you.

[bhargavbharathan]

Originally Posted by mehradahmadi

Hi all, I want to do a project about Numerical simulation of heat exchangers with phase-change material with the help of Fluent.
For example, air from the inside of phase-change material between two parallel plates are passed, and We want more cool air to keep output As shown below:

What options should be activated and how that process performed?Please please help me , If it is possible….
thank you.

Hi,

I would suggest the solidification melting model with VOF switched ON. You can find "best practices for VOF model" documents from ANSYS on the internet, it will help you.

With simulations like these I always use temperature dependent thermal and material properties. It improves the accuracy of the simulation.

It is hard to make more suggestions without knowing what your final goal is though. If you are trying to concentrate on the PCM, then you need can monitor the phases.

-BB

[mehradahmadi]

Hi dear bhargavbharathan , thanks for your reply,I want to simulate an active cooling heat exchanger based on phase-change material.First of all, I would like to simulate two concentric tubes that fill the space between them with the pcm and I would pass the air through the tube center. The Target is: I would pass the air at a temperature of 30 ° C and a speed of 2 meters per second as inlet , which eventually exhaust air temperature is lower than the inlet temperature.For this purpose I need to simulate Fluent settings , so I consulted with several people, but still have not gotten a good answer. I try to set guidelines please help me.
note: I already had a message on another forum(VOF) and I asked my question, but no one answered.

[bhargavbharathan]

Originally Posted by mehradahmadi

Hi dear bhargavbharathan , thanks for your reply,I want to simulate an active cooling heat exchanger based on phase-change material.First of all, I would like to simulate two concentric tubes that fill the space between them with the pcm and I would pass the air through the tube center. The Target is: I would pass the air at a temperature of 30 ° C and a speed of 2 meters per second as inlet , which eventually exhaust air temperature is lower than the inlet temperature.For this purpose I need to simulate Fluent settings , so I consulted with several people, but still have not gotten a good answer. I try to set guidelines please help me.
note: I already had a message on another forum(VOF) and I asked my question, but no one answered.

Hi,

You already seem to have everything figured out.
1. You have your boundary conditions and in addition to that don't forget the wall properties and material.
2. VOF and solidification/melting are quite straightforward, you can consult their tutorials from Fluent as well.
3. You can get the best practice documents from google or the ANSYS customer portal.

Let me know if you get stuck somewhere. Good luck.

-BB