ฝัง
- เผยแพร่เมื่อ 30 ก.ค. 2024
- In this tutorial, you will learn how to simulate a Fluidized Bed using Ansys Fluent (Eulerian)
#AnsysFluent #AnsysFluidizedBed #CFDninja
Computational Fluid Dynamics
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ANSYS
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thanks for this tutorial this video is very helpful for my project
🙏🙏
That was amazing, saved me lots of time. Thank you!
You're welcome
Nice tutorial, help me a lot!! Thanks
If I desire that a fluid over a bed, inlet on top and outlet in bottom, but I need that the solid don`t escape through outlet, how I need to set? Because when I tried that, all solid gone =(
Hi, Thanks for video, i want to ask which formulation did you use to calculate mininmum fludization velocity?
Thank you sir for this video,my question is what i should doing if i have wetted granular of silica gel and the inlet hot air is 65 C
Hey can you help me with the simulation of fluidzied bed i need a swirling motion but don't know what model should be used with what boundary conditions
good information about the fluidized beds cfd? could you tell me what is the primary phase in the gas-liquid multiphase bubble column??
How to simulate a packed bed flow in fluent? What may change while doing going from fluidized bed to packed bed?
thank you for your wonderful video
You're welcome friend.
Best regards
Can the bottom inlet be nitrogen instead of air? In that case would it be three phases ( solid, air, nitrogen)? How do we simulate such case
What about gravitational force in your case. It seems you neglected gravity?
Thanks
How do i draw the goemetry of a hydraulic flume with a roughened bed
Hello, I would like to plot the pressure drop (on the y-axis) and velocity (on the x-axis) for this video project. Could you help me?
Hello, can i know the references of this boundary conditions and provide me the reference paper.
So hard to understand the theory of these processes and of physical settings. But it's so interesting! Thank you!
Hi friend;
This tutorial was developed at the request of several subscribers, yes indeed the theory is hard.
Best regards
@@ansys_cfd Please, think of the simulation with processes of water steam condensing on vertical heat exchanging pipes. I would be glad to see it!
@@looee4462 Hi friend;
I have more than 100 tutorial suggestions from several subscribers, I will try to make one about your recommendation in the future, thanks for the idea.
Best regards
@@ansys_cfd please give one tutorial on setup of Three phase fluidization bed✌
Sir,
How yu got minimum fluidization velocity 0.06 m/s ??
Hello, do you have a solution for this problem in 3d?
Thank you for your precious tutorial. One question: is there a particular reason for which you select 0.6 as volume fraction when you patch? Does it mean that initially the bed is fixed? Do I need to possess the initial value of volume fraction or is it just ok to put 0.6? Thank you
A volume fraction of 0.6 (or a voidage of 0.4) is a common voidage at minimum fluidization velocity. The actual value will depend on your particle size, shape and density but 0.6 is a good approximation.
thank you for your wonderful video. I have a problem when I try to practice: the contours graph shows nothing but red even I did every step follow your video.
Hi friend;
Please review the scale. Maybe the range in your simulation is higher.
Regards
çok güzel 👍
Hey Nice video bro!! Is it Fluidised bed gasifier?
Hi firend;
Thanks. In this case air enters through the bottom only.
Best regards
hi sorry I want to ask, what is the differences between Eularian and Volume of fluid
I ever saw a video which is using Volume of fluid if the fluid can't got mixed
thank you so much
Hi friend,
Eulerian Model: The Eulerian multiphase model in ANSYS Fluent allows for the modeling of multiple separate, yet interacting phases. The phases can be liquids, gases, or solids in nearly any combination. An Eulerian treatment is used for each phase, in contrast to the Eulerian-Lagrangian treatment that is used for the discrete phase model. With the Eulerian multiphase model, the number of secondary phases is limited only by memory requirements and convergence behavior. Any number of secondary phases can be modeled, provided that sufficient memory is available. For complex multiphase flows, however, you may find that your solution is limited by convergence behavior.
VOF Model: The VOF model can model two or more immiscible fluids by solving a single set of momentum equations and tracking the volume fraction of each of the fluids throughout the domain. Typical applications include the prediction of jet breakup, the motion of large bubbles in a liquid, the motion of liquid after a dam break, and the steady or transient tracking of any liquid-gas interface.
Source: ANSYS HELP
Regards
Thank you for the great tutorial sir! I just want to ask how to insert chemical reaction in fluidized bed? I tried turning on the species transport (with volumetric rxn) and typed in my activation energy and preexponential factor, but no rxn happened after the calculation. I also tried to use the particle surface reaction but still no reaction happened. What could be my mistake?
My reaction is CuO (s) + SO2 (g) + 0.5 O2 (g) ---> CuSO4 (s)
Inlet gas composition: SO2, O2, N2
Catalyst: CuO/gamma-Al2O3
Hoping for your reply. Thank you so much!
Hi Nero which kind of reaction are modelling?
0 cells marked for refinement, 0 cells marked for coarsening
Additional cells might have been marked because of the requirements of the
adaption algorithms.
I am getting this message while doing region register , i have defined the physical parameters correctly.
can you please help me regarding this.
Hi friend,
Maybe you are marking in areas that are not within the geometry, check the points and units.
Regards
Hello there. Thank you so much for the video. I followed the same procedure and tried modelling it for a spout fluidised bed. Results look okay, but the continuity residuals increase upto 1e-02 and stays constant when getting fluidised. Is it okay?
+1
Hi friend
Initially the iteration may start with high values, but at the end of each time step it reaches convergence.
Regards
i love u
I know :)
Is this a 2d flow or 1D flow?
2D
Why didn't you add gravity to the model ?
Hi friend,
This model has gravity. Please check min 5:00
Regards
Sir, what is your email. I have an urgent work.