Phase change material (melting simulation ) in Fluent ANSYS

[@moncayoe1390]

in the heat transfer options dont appear to me phase change material, just appear phase change interphase, I try it to used but doesn't work, what can I do if this phase change material doesn't appera in comsol 6?

[@alokray9136]

I would like to model a pcm .But i only know the density of solid pcm and liquid pcm. so in properties for density what I should take?

[@muditgupta6664]

can anybody help me in the above query?

[@amitpatankar8625]

Hello I am getting floating point exception when using the same settings. what could be issue ?

[@amitpatankar8625]

Update: I got the solution, used first order upwind schemes for momentum and energy

[@alokray9136]

I was trying to analyse a high MP PCM having thermal conductivity below 1. I would like to know what time step I should choose as it's showing floating error

[@bribtissam6046]

thank you for this simple simulation. i have a problem why the liquid fraction still equal to zero? please can you explain this

[@yewenwen4611]

Dear sir, have you tried to plot the streamlines in cfd-post? There are streamlines even in the solid part, which is weird. Do you know how to deal with this problem?

[@Abdullahil56]

please update new vedios with microphone on.... so tht will. more helpful im undersanding the topic throughly

[@Nagasudhan]

hello, What boundary condition you have used ?

[@ibtissamlamaamar9270]

how to make for the computation passes very quickly on ansys

[@subhamshow5884]

How to turn on enthalpy porosity method ?

[@alokray9136]

Hello. I am trying to model the same geometry with same BCs & setup for a high MP PCM. But it shows floating point exception. How to resolve this?

[@amitpatankar8625]

try first order upwind for momentum and energy

[@yzhfsm]

@@amitpatankar8625 thanks for your guidance, it helps a lot!

[@alokray9136]

Hello. If only the melting point is known for a material, how to select solidus and liquidus temperature in material setting?

[@AbstraktZ]

Did you find out how??

[@alokray9136]

@@AbstraktZ you can take both as same temperature

[@AbstraktZ]

@@alokray9136 Do you have to do that or is it ok to do 2K lower for solidus and 2K higher for liquidus? And mp is between.

[@sinaga1982]

Hello, I have tried and followed several times as yours but I found floating point error. Would you help me please how to encounter it? Thank you

[@gabrielawyciszkiewicz2874]

I've got same problem. Did you find the anwser?

[@zara9305]

Hi, thanks, I am trying for Solidification/Melting with VOF models also Solidification/Melting with Species without reaction for the same problem (geometry, material). Do you have any ideas? please help me? the problem that I face is the velocity in the all domain!!!!!!!!!!!!!!!?

[@CFD93]

Your case pcm with nano particles

[@mwesigyearnold275]

Hey thanks for the video. can I get any help with how to simulate phase change melting using a moving heat source.

[@irfankhann9603]

hello sir did you find answer

[@jegga007]

Hi I tried exactly the same things as yours and continued running it but encountered floating point error. Tried to increase the iterations and reduce the time step size but to no avail.... Any idea why this happens?

[@amitpatankar8625]

try first order upwind for momentum and energy

[@jeissonoctavioarizacastro1090]

Estos tutoriales siempre sin voz, ni una explicación. Se ve que manejan bien los programas, pero que manera de explicar. Lo explican para quien ya lo maneja bien.

[@worldwidetopten4865]

Thanks for the amazing video. Btw is phase changing volume expansion in 3d model also possible to be simulated in ANSYS Fluent? I am looking for some videos or tutorials for the simulation of paraffin wax expansion dependent on the temperature by phase changing. I hope you have an idea about this!

[@worldwidetopten4865]

MASTER Engineering I will absolutely look for to watching that video you mentioned! Thanks again for the quick reply!

[@ajitc8428]

@@worldwidetopten4865 which video 'MASTER Engineering " recommended you as i am also working on phase change do let me know .

[@sksk8982]

sir can u solve pcm solidification..

[@mechsingh9425]

I am facing problem of floating error after 1000 s

[@dwimlestari]

I have practiced the same simulation but the results are not the same as yours. All velocities are zero. Can you help me to solve this problem? Thanks

[@HKMVision3Sixty]

Did you followed exam same steps??

[@dwimlestari]

@@HKMVision3Sixty yes, I made everything the same as the video.

[@HKMVision3Sixty]

@@dwimlestari What you set for density? Boussinesq Equation?

[@dwimlestari]

@@HKMVision3Sixty yes, I used boussinesq.

[@HKMVision3Sixty]

@@dwimlestari Difference in density creates velocity in domain. You might have forgotten to set gravity value. Just check. Bossenesq equation is not effective in your case.

[@freelancestuff6429]

Aha!! The data is from Voller-Brent ENTHALPY-POROSITY TECHNIQUE FOR MODELING CONVECTION-DIFFUSION PHASE CHANGE: APPLICATION TO THE MELTING OF A PURE METAL 1988! I know a good research paper when I see one!!

[@freelancestuff6429]

Oh, its just the geomtery...

[@subhamshow5884]

how to turn on enthalpy porosity?