Heat pipe wickless-simulation on Fluent-Multiphase
 

Hi,

I'm doing my bachelor project and need to validate my results by simulate the temperature drop across the -heat pipe.

I read a lot about this simulation and end up that i need UDF to simulate the condenser and the evaporator section in a right way.
I don't have have experience in fluent to manage it, and many previous udfs have problem in condensation section.

Could anyone help me with tutorials,idea or solution of this problem?
Please, finds attached the simple heat pipe working principle.

Regards,
A.k

Thread closed.

I succeeded in simulation of a 2d heat pipe using fluent 17 VOF multiphase model with hooking UDF with the case.

The UDF didn't work on Ansys 16 due to some bug in the program, so you should use ANSYS 15 or 17 instead.

If someone need help in the simulation, write your email and i will send some good resources.

heat pipe simulation
 

Hi, Could you please send me details to vmvivek92@gmail.com

Thank you.

Could you please open your UDF publicly? Then more people could benefit from you! :)

Udf
 

Check the attachment

Thank you! :)

Hi,
Could you also send your material to shahhardikd@gmail.com?
Thanks.

Please send the details to my mail
(arulkumarkce@gmail.com).

Sent from my SM-J700F using CFD Online Forum mobile app

Need a resources for heat pipe simulation
 

please send the resources to mail id, pritamdgole@gmail.com

Greetings, may you please send the resources to antiphilo@gmail.com?

I would greatly appreciate it.

Need a resources for heat pipe simulation
 

could u pls send to me code for udf to simulate evaporation and condenstion in heat pipe email
czakareya@yahoo.com

Need a resources for heat pipe simulation
 

could u send to me udf for condenstion and evaporation
email czakareya@yahoo.com

bachelor's thesis seeking help
 

hi everyone, i'm currently doing my bachelor's thesis on this subject as well. for some reason, my set up always diverges. would anyone be kind to share their case and batch files so i could compare the parameters which i may have set wrongly?

thanks in advance!

Could you please send me the simulation files, UDF and other details to my email. I would greatly appreciate it.
sajjadahangar@gmail.com

Could you please send me the simulation files, UDF and other details to my email. I would greatly appreciate it.
sajjadahangar@gmail.com

I sent the UDF and some useful resources to follow but i can't send you all the case.

Good luck

Could you please send me some useful resources about your case? like UDF, models and so on? I would appreciate it very much. elvislf@qq.com

Heat pipe-evaporation and condensation UDF
 

Find attached the UDF i used for my simulation on Ansys 15 and ansys 17 because, ansys 16 doesnot work with me. It has a bug regarding this UDF.

It takes some time and many trials for simulating the HP. My advice is to start with 2D simple case and then introduce complexity with time. You will need to simulate the boiling tutorial to get some experience about this kind of simulations.

For simulating the condensation, you will need to generate fine wall layers for catching the condensation droplets.

For simulating the Heat pipe you can use these useful tutorials:

1-https://www.researchgate.net/profile...g+Tutorial.pdf

2-https://youtu.be/hPeGvczYHMM

3- https://youtu.be/LQ2y0sIXgio

4 -article: CFD modeling of flow and heat transfer in a thermosyphon
Asghar Alizadehdakhel , Masoud Rahimi , Ammar Abdulaziz Alsairafi

5 -article-2:Three-dimensional CFD simulation of geyser
boiling in a two-phase closed thermosyphon - Hussam Jouhara a,c,*, Bandar Fadhl b,c, Luiz C. Wrobel

If anyone have a question please, write it here so every one can see it and i will reply.

Thanks and good luck :)

Not able to design the wick less mesh in fluent
 

Please someone upload the mesh file for the heat pipe (2D). I am not able to separate the water and vapor regions and also condenser adibatic and evaporator region.

hello!
i am doing a simulation of a solar still.it needs an evaporation-condensation phase change model.
my question is in Ansys 18.2 it included evaporation condensation phase change model.is it necessary to use your udf with lee model?

hello are you going to use udf? or evaporation condensation lee model which is built in

The UDF is not worling in ansys 14,15,16,16.2
 

Sir I have uploaded the udf posted in this page for 2 d heat pipe evaporation condensation. But the error comes that some step in udf is not define in the command window. Please suggest me what to do in this case. And kindly suggest me that How much watt (heat flux) should be added in the evaporation wall section for evaporation process and on the other hand what should be boundary condition for condenser wall so that vapor converts to the liquid.
Thanks

yes. But the udf uploaded in the post is not working in the fluent.

continuity residual not converging
 

hello
i have some doubts
(a) in mesh, what should be done with boundary in fluid region? is there any boundary condition in that region? if possible please upload mesh file.
(b) udf should used alone or with lee model.
i am not getting convergence in continuity. the residual is reaching to e-4 limit.

Hi, Could you please send me details to qimao520521@gmail.com

Thank you

thermo syphon
 

hi
i wanna simulate a thermosyphon in lee model.
i need your help.
i have some problem in initialize and mass transfer.
thanks for your atnettion and answer.
email: behnamrha89@gamil.com

Hi
i use Lee model .
what is use for these UDF?
and where should i use it ??
thanke you

CFD analysis of heat pipe
 

Sir,

I am trying to do CFD analysis of wickless heat pipe. But not able to fill perticular amount of fluid in heatpipe. What command I have to use to fill 10% of volume of water in the heat pipe using fluent? if possible can you share your contact no please..

Sir,

I am trying to do CFD analysis of wickless heat pipe. But not able to fill perticular amount of fluid in heatpipe. What command I have to use to fill 10% of volume of water in the heat pipe using fluent? if possible can you share your contact no please..

please mail me the related resourse @ketan.v.warghat@gmail.com

Does your heat pipe simulation model have porous media?

Is there a porous medium in your heat pipe model

Refer to this address:

https://fluentcfd.ir/webinar-ansys-fluent/