Simulation of Evaporator Using VOF Evaporation-Condensation Model in ANSYS FLUENT

[@naksungdae]

The BEST tutorial I've seen!!

[@RIDVANYAKUT]

It was a great tutorial, I am waiting your new updates, keep going

[@sureshlanka7736]

it was really a great video .sir please do for thermosyphon heat pipe

[@akmond24]

+

[@yusufpolat13]

Great job Mr.Kouta. If you let me i want to say something about conformal mesh to help watchers. You define a some contact region in your video. As you know if you unify the shell, tube and pcm region in design modeler, you will no longer need to define any contact in your mesh arrangement. Unify operation in design modeler, automatically makes that region's contact surface as one part and make ur mesh as conformal i think...

[@furkankorkmaz2110]

It was really a great video. I am impressed how you explain all the other options also. Actually i m working on similar model and need some help so can u please upload link of your All working files..

[@mityajussrssr4]

Lovely tutorial, however 1 millinewton meter is just 0.001 newton meter hence surface tension between water and air should be 0.06 instead of 0.6

[@kellybj08]

Ahmad, thank you for this great tutorial!

[@drumairmunir]

Great work

[@shaswatpathak2062]

Great lecture sir

[@youcefkouzou6431]

Thank you so much bro, God bless you

[@aniketarundhavale6565]

Hello Ahmad...great video, can you perform same analysis for the condensor.

[@ashichauhan22]

Thank you for this tutorial. Can you please share the lecture ppt that you have referred in this video. Thank you

[@FranciscoMartinez-fl1lp]

amazing

[@priteshmandal9870]

Hello Ahmad. This is an excellent tutorial for a evaporation problem. I have a similar case but I am using continuous inlet flow of 0.1m/s. Eventually the solution diverges for continuity. Would you be able to say what could be the issue here. Your help in this is highly appreciable. Thank you.

[@AbdulrahmanElmen]

Great explanation..! Thank you sir, I am working on a droplet evaporation model and I would be very grateful if I could contact you to ask a question regarding this matter. P.s I am also an egyptian😄

[@meteor5277]

Hello Sir, did you able to do droplet evaporation?

[@ricardomanuel6778]

Excellent explanation, the case of evaporation-condensation, the real gas refrigerant 507a, can do the simulation using a model of two phases?

[@luigibrentano]

I need to evaporation with R134a

[@abdulrehmankhan9694]

Thank you for this

[@karimgadelrab7027]

Excellent tutorial! I just have the impression that surface tension should be ~ 0.06 rather 0.6! Am I missing something?

[@AhmadKouta]

Thanks! It depends on the fluids' interface. I worked it up according to the table in the video.

[@naksungdae]

I also had the same question, and I think the teacher had a little mistake in deviding it by 1000.

[@SinaZareie]

Hello Ahmad. that was an excellent tutorial But I am going to simulate vapor condensation with PCM. would you please help me if you have any tutorial or any another idea? Tnx

[@abhishekgor1507]

Hello Sir, This is really amazing video....and u have taken the understanding to really appreciable depth. May I know, how did you learn CFD, through formal education degree or from open source resources?

[@ajipp13]

This is a very good tutorial! Is this method could apply to analyze the dehumidifier or dryer system?

[@zhaokuanlu5037]

I could understand the surface tension between water-steam and water-air to be around 0.06 n/m, but the interfacial tension between steam and air should be negligible. Isn't it?

[@sandeepakki6768]

Tutorial is good and explanation is best thank u , sir i have problem which i.m trying to solve can u help me out.

[@Peaceplace17]

Hello sir!! Can you please provide the video of geometry portion? It will be more helpful for the simulation process. Thank you

[@vicentes7114]

Hi Ahmad, first of all thank you so much for you video. Did you use any special mesh for your tube? I'm having a lot of trouble in terms of convergence...

[@AhmadKouta]

Hi, as far as I remember, I didn't use any specific mesh for this case, just an acceptable one to carry out the simulation. I wish I still have the simulation files as many are asking for details about this part. My apologies and wishing you all the best!

[@vicentes7114]

@@AhmadKouta Thanks Ahmad for the answer! Do you think it is perhaps related with that mass flow condition your put in your udf?

[@asadusman-e4o]

Could you please tell in this simulation... how can we calculate vapor quality post CFD ...Thanks

[@sreekumaran8534]

i have a trouble with my sim, it says latent heat cannot be less than zero. Do u have any idea why it is showing like that . and could u please reply thank u

[@dineshbabu6619]

Hi! It's very useful video! I followed your steps to simulate my simple 2D pipe model. The water is passing through inlet and fully converted vapor is coming out from outlet. I can see vapor volume fraction changes in pipe and outlet. But I couldn't able to get vapor mass flow rate in outlet. I don't have why I couldn't able to mass flow rate of vapor. The mass flow rate of water is 0.4 kg/s but vapor mass flow rate is 0 kg/s. Could I help me to find the mistake?

[@lokeshverma8762]

hello sir, i want to compress air in cylinder using water coming from inlet (system is vertical and cylinder is closed from top), i want the water to enter continuously at high pressure. how should i approach this??

[@dopractitioner]

can you send case? or geometry? ill be glad

[@AhmadKouta]

Unfortunately, I do not have them anymore.

[@dev1995kumar]

Respected sir I need to learn Fluent for my research (multiphase flows+ flowing boiling etc).. can you please suggest me some good source

[@dedefebriyansah4627]

Hello ahmad. I have a problem simulating condensation from vapor to liquid. When I initialozaton "error: latent heat cannot be less than zero!" Can you reply, what is wrong? Thanks

[@vanellenoumbiap7827]

Hello Sir, I do a similar job (condensation of an r134a refrigerant) in the school setting with a solid (tube) and a fluid (pcm). but when i want to create contours for vapor and liquid phase, "interior pcm" and "interior tube" do not appear in the surfaces. do you know how to do it please? I've been stuck on it for 2 weeks.

[@AhmadKouta]

Hi, I guess you forgot to name your boundaries using 'Create Named Selection' while meshing, before moving to Fluent?

[@muhammadhassan1417]

Any chance to send me the geometry? or a video of how to design it

[@kalleeinar1198]

Good job man.

[@adilriahi938]

Hi Ahmad! great video. Do you have any simulation for pool boiling of LN2. Can you please share the powerpoint?

[@AhmadKouta]

Thanks and I hope it served your simulation. Right now I don't have but I just wrote it down and will try to deliver a related video in the near future. Good luck!

[@adilriahi938]

@@AhmadKouta thank you Ahmad. Would you mind sharing the PowerPoint of the current video.

[@engineerahmedmageed]

great tutorial ..... please I have problem in open channels simulation ( boundary conditions )

[@AhmadKouta]

Thank you. I will be doing a tutorial related to open channel soon as I have free time.

[@vamsikrishna7904]

nice tutorial bro.....can u share that ppt

[@yusufpolat13]

Actually i couldnt understand why did you assign a surface tension coefficient between air - water and air- vapor. They cannot contact in fluid flow because shell zone seperate them from each other. If u answer my question, i will be really so happy sir...

[@dilshanchrishantha6548]

well explained.must have your audio setup more clear. Thanks.

[@AhmadKouta]

You're welcome!

[@soumyaranjanbehera5171]

hi could you share the ansys setup files ?

[@tonoyk.mondal7106]

if i use 30 and 40 degree centrigrade of wall of a 2d body and 37 as saturation temp then is it possible to evaporate water with this model? actually i am working on solar still

[@AhmadKouta]

Hello Tonoy! Unfortunately, we can't predict the results. You must run your simulations and then make the proper modifications when facing an obstacle. Evaporation is a challenging topic. So it's not simple to know the outcome by just pre-assuming values. Good luck!

[@tonoyk.mondal7106]

do you know how to calculate the amount of water vapor produced in any model? i really need this

[@omprakashpandit8324]

Sir please make a video for how to write UDF for adding extra source term

[@AhmadKouta]

Will try my best to comply with your requests soon. Good luck! 🙂👍

[@miao7997]

Which ANSYS Fluent version is this?

[@AhmadKouta]

Can't remember exactly. The video is about 5 years ago and I usually use the latest version, so it may be 2019.

[@asfawsne5509]

Sorry to interrupt, but could I ask you to give me it's design part in pdf form......i'm from east Africa,Ethiopia

[@fanindrav]

can you please send me how to create udf for phase change (condensation and evaporation)

[@AhmadKouta]

Hello! Take a look at my UDF video.

[@komalkumawat7155]

Sir can please send a report of it??

[@laicharles5969]

May I have your geometry file please? It's for my final year project, hope you can help

[@AhmadKouta]

I'm so sorry I don't have it anymore.

[@eslamahmed3910]

how can i text you or massage you

[@MaMa-mj7zr]

Hi teacher!your video is so educational and great! I just wondering if teacher can teach us how to use fluent to do the thermal electric model with two fin ,one fin stick to the hot side of TEM and one fin stick to the cold side, and do the analysis on the cooling fin to observed the condensation on the cooling fin,I watch so many video about ansys fluent but no one do this .If....if I can learn this from you,I really.....really.....appreciated....because I really want to learn about this stuff...so please teacher if you have free time can you teach me how to do this on ansys fluent ?>_

[@AhmadKouta]

I suggest you try simulating it and if you have any questions you are welcome to ask.

[@MaMa-mj7zr]

Thanks for reply, I am the rookie beginner and have less source to try to do relative problem,but I am interest in the condensation situation of moisture air contact on the surface ,maybe I can learn from your lesson on youtube . I try to figure out ansys fluent but....still don’t get it ...all of those stuff:(

[@sherlinarahma3626]

misi..bolehkah saya meminta bantuan mu? apakah kamu punya Whatsapp / email?