Can you please make a video on how to write UDF for DEM and Coupling with CFD ?
@shivaniagnihotri8761 Жыл бұрын
Would it be possible for you to provide me with a comprehensive tutorial on this subject? Your assistance would be greatly appreciated.
@hosseinmoghadam91572 жыл бұрын
Hi, I want to simulate a cyclone as a 4-way coupling. Please help me
@engineerdo65684 жыл бұрын
That's a nice simulation. You were really ahead of the time. I made a tutorial for a coupled simulation of openFoam and liggghts. It includes also a simplified classifier. If you like, check it out. kzbin.info/www/bejne/fqS3g555aqp8hdk
@lazysunleo4 жыл бұрын
Thanks and I watched your simulations. They are quite nice! Cheers,
@aqibjamil65544 жыл бұрын
As you have made axial, tagenial, and radial velocity contours in paper. Can you kindly elaborate how to made them.
@albertoguerrero87754 жыл бұрын
Separator?..where is gas phase?...I look one phase just going down.
@lazysun-leo74914 жыл бұрын
I did not show the flow field of gas phase in the video.
@vimalkr74525 жыл бұрын
Sir can I get this full tutorial of this videos please post it
@moaazabdelhamied94045 жыл бұрын
How do I get this software with training?
@xcwang28075 жыл бұрын
Can you upload cyclone separator cfd-dem coupling case
@user-ff4eh7dj4j5 жыл бұрын
what is the variable used in tecplot??
@lazysunleo4 жыл бұрын
Particle position and velocity.
@nikeshshrestha28855 жыл бұрын
i have studied your paper. Nice solid flow pattern video.
@lazysun-leo74914 жыл бұрын
Thanks
@md.tariqulislam8367 жыл бұрын
Dear Dr. Chu, May I get your email address? I am a student of the University of Queensland, Australia.
Could you please help me about the initial height by Patching of Particles in DDPM or DEM in ANSYS Fluent?
@lazysunleo7 жыл бұрын
I used my own DEM codes, so i am not sure how to patch particles in Fluent.
@supriyoghosh46647 жыл бұрын
Sir, how did you calculate the superficial gas velocity?
@lazysunleo7 жыл бұрын
hi, i set the gas mass flow rate as a constant value. And the superficial gas velocity is decided by the mass flow rate.
@supriyoghosh46647 жыл бұрын
thank you, sir
@emigegun8 жыл бұрын
Hi! I´m trying to simulate de efficiency of a cyclone I design for college, and I just read you used ansys for this. Do you know where I can find how to configure properly the model to do that? I´m very begginer with Ansys and I´m having a lot of doubt about how to do it. I were looking for tutorials, books, and practicals examples with no luck. Thanks
@lazysunleo8 жыл бұрын
You may start with the paper below and good luck! Wang, B., Xu, D.L., Chu, K.W., Yu, A.B., 2006. Numerical study of gas-solid flow in a cyclone separator. Applied Mathematical Modelling 30, 1326-1342.
@ahmedyousry23318 жыл бұрын
Actually i want to understand what is meant by loading rate??
@lazysunleo8 жыл бұрын
Loading rate is the ratio of mass flowrate of solids at the cyclone inlet to that of air.
@porametrarromdee464110 жыл бұрын
Hi mate, your video is very interesting. Could you please give me some advice " How to model this kind of the reactor in the ansys program" If yes how can I contact you. Thank you
@lazysunleo10 жыл бұрын
hi, we have used our own DEM for particles and Fluent for the fluid fow. my email is [email protected]. kevin
@porametrarromdee464110 жыл бұрын
Thanks mate
@tryagain141310 жыл бұрын
Which software you use for simulation?
@lazysunleo10 жыл бұрын
We are using ANSYS Fluent for the solution of gas flow and our own DEM code for particle flow.
@wadriansyah0911 жыл бұрын
Hi Kevin, nice simulation. Can Fluent display the particles like in your movie?
@lazysunleo12 жыл бұрын
Hi, but i donot think Fluent will recognize Fortran codes. Cheers, Kaiwei
@lazysunleo12 жыл бұрын
Hi, basically you declare all of the subroutines in a header file (*.h), then you include the header file at the beginning of all of your source codes. Finally you load the source codes into fluent and compile them, which will generate a file of *.libudf. Cheers, Kaiwei
@d3rf0 Yes, you can run cfd and dem consequently by calling dem in the user defined functions of fluent. I do not use a batch command. I get the variables from cfd using udf and share them with dem by use of public variables. You can also put some of them into udm in fluent and then you can view their values in the postprocessing windows of fluent. cheers,
@d3rf014 жыл бұрын
how did you couple your dem code with fluent? Is there any way to call consequently dem and fluent? Did you use a batch command? Have you some guide or how to? thanks...
@lazysunleo14 жыл бұрын
Yes, it could be a DIY simplified circulating fluidized bed in computers. Some researchers also think it is virtual experimentation under idealized conditions. In essence, it is a mathematical description of the flow based on first principals.
@lazysunleo14 жыл бұрын
Our own DEM and coupling codes with Fluent for the sulution of CFD.
@lazysunleo15 жыл бұрын
Hi, 4agrees, it is a long-term plan to include heat exchanger and heat, mass transfer in the simulation. We have to try it first. I guess it should work by 50% chance at the moment.
@lazysunleo15 жыл бұрын
Our method is very similar to EDEM. It is ture that we have a quite long UDF for Fluent. Cheers and thanks!
@lazysunleo15 жыл бұрын
You are welcome! All the best to you too!
@lazysunleo15 жыл бұрын
Well, I donot know much about absorbtion/desorption. But I do know Fluent can simulate lots of chemical reactions. CFX is even better than Fluent in the simulation of chemical reactions. Cheers,
@lazysunleo15 жыл бұрын
Yes, it is true. Segregation is unavoidable in this CFB. By the way, higher fluid velocity will suppress segregation.
@pepeiq15 жыл бұрын
Very usuful simulation. I was thinking in the posibility of mixing and dry sand and cement by this way, but it seems that could be segregation... Thanks a lot.
@lazysunleo15 жыл бұрын
Thanks and Cheers, KaiWei
@lazysunleo16 жыл бұрын
Yes, you can borrow it. Just remember to say it was created at UNSW by KaiWei Chu, Bo Wang and Aibing Yu.
16 жыл бұрын
Thanks alot. I will check the papers.
@lazysunleo16 жыл бұрын
We couple our DEM code to Fluent. There are some papers available for detailed information. CHU, K. W. & YU, A. B. (2008) Numerical simulation of complex particle-fluid flows. Powder Technology, 179, 104-114.CHU, K. W. & YU, A. B. (2008) Numerical simulation of the gas-solid flow in three-dimensional pneumatic conveying bends. Industrial & Engineering Chemistry Research, 47, 7058-7071.