Transient Multiphase Flow Simulation using Eulerian Granular Multiphase Model in ANSYS Fluent | #11
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- Опубликовано: 29 сен 2024
- In this tutorial, I simulate the case of sediment transport in a channel using Eulerian Granular Multiphase Model. Some sand is considered at the channel bed of which motion is simulated using ANSYS Fluent 18.
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![[CFD] Eulerian Multi-Phase Modelling](http://i.ytimg.com/vi/6BJauDTpCmo/mqdefault.jpg)
Why did you calculate Re like this? Isn't it Re=Uh/(2*Nu)?
Could you please Upload the tutorial for Population balance method (Particle breakage).
there is no option for granular...then i must input it as a fluid in order to patch it inside other fluid..what should i do?
Hello Tanmay! A quick question, can i use adapt/mark region a 3D model with tetrahedral mesh?
I suppose you can. I've previously done in 3D.
Thank you! Btw can you have a look at my simulations, i kept on getting reversed flow and i dont know why? I looked at ansyscommunity, people said that reversed flow just disappeared after more iterations, but mine doesnt seem to go away even after 400 iterations
Hi, I am trying to simulate Scour around bridge piers in a 3d model. i have followed your tutorial, the only issue i am having is that as soon as the water begins, all the sand flushes away. can you advise me how to simulate water running over the sand, picking up particles and not flushing away the entire bed?
I modelled a fluid sediment model in a flume with a circular pier at the middle of the flume to observe the scour, but after running simulation for a few minutes, my velocity vector is not moving down ward, it bends around the pierwall which should be but the downward velocity which causes horseshoe vortex is not showing, the vectors will not moving downward after interacting with the pile, what is the reason? Please help me understand
can we use this in combustion ,for example we place biomass instead to sand and instead of water we put hot air , it should transfer heat or combust?
Super informative video. At 10:39, the density is incorrect?
Sir how to get results of ppm vs time of a gas in air .... Please reply
thank you very much sir it is very useful for my project
good tutorial，thanks very much。
Sir kindly make tutorial of reactive system in FLUIDIZED BED REACTOR
very clear presentation. thank you so much for taking the effort of making a tutorial starting from the very beginning.
thank you
I need to plot the graph at specific Volume fraction say 0.5 but I am not able to plot it. Can you please help with it?
This tutorial is very informative. Please I am running similar simulation on Comsol Multiphysics but having problem of how to build and make the insitu particles or sediments to flow within the geometry. Please do you have some knowledge on Comsol and how to create such particles to flow in the geometry.
Very nice tutorial...can you please send me an email
based on this, i'm trying to simulate gas hydrate conditions... can you please help me with that..??
Thanks a lot Mr.Tanmay..i have some aqudation.can i get your email??
Thanks¡ Really is a excellent video ¡
Hello sir, in my case. The water and slurry are entering the inlet at the same time. How do I go about the set up? Volume fraction and all
hii sir, how to define volume fraction in cell zone conditions, I have a closed cavity, i need to simulate multiphase flow in cavity. thank you sir
Sir my project is application of phase daigrams in multiphase flow system plz help me sir
Sir how vof is used to track the interference plz share videos if any available
Very effective and informative. Thank you. I am doing research in pipe flow. Would like to discuss regarding that. Could you please provide email for further contact.
how do we go about simulating a two multiphase flow in a concentric pipe
sir can you please tell me about total concentration method for deposition of particles flowing in a channel;
sir can we simulate some water sand mixture flow by this method
Tanmay Agrawal i want to know about observing the settling of the proppants in fractures during hydrofracking can u please explain?
Thanks so much for this video, my question is what if there is air in the channel which one will me the primary phase.
Sir, how can I load the data in the result section? Please let me know
Thank you for sharing. I wonder in the case of 2D simulation, what is the length in spanwise direction used for Sand Volume Fraction calculation?
In any 2D simulation, the span is considered infinite.
Thanks so much Mr.Tanmay it is similar to my Project its really useful. May I get your email address I have some questions regarding my project .
How to correct "segmentation fault" while initialising the case?
Please help.
Dear Sir,
I want to express my sincere appreciation to you for imparting knowledge for free on youtube. I have watch series of your tutorials on youtube, they are very helpful. Thank you sir.
Please I am having a very serious issue with my research. Part of my research is on Two-Phase Flow Boiling. Unfortunately, i have search through and watch most videos on youtube but i cannot find any ANSYS FLUENT Modelling for Two-Phase Flow Boiling in a vertical pipe of uniform heat flux. The Fluid is Water-Gas flow.
As part of my preliminary research, I must learn and know how to model Flow Boiling in a vertical pipe sing ANSYS FLUID FLOW (FLUENT), showing different flow regimes (i.e bubble, slug, churn, annular and wispy annular). Until I learn this, I will not be able to proceed and face the main aim/objectives of my research.
Please sir, I will be very grateful if you can help me with the ANSYS FLUID FLOW (FLUENT) Tutorials for Two-Phase Flow Boiling in a Vertical Pipe of a uniform heat flux, showing different flow regimes. The Fluid is Water-Gas flow.
If I should understand how to model this, then it will be a better start point for me to tackling my project.
Thanking you in anticipation of your kind help.
Charles
E-Mail: charles.okon@postgrad.manchester.ac.uk
Was the time step calculated using courant number if yes what was the courant number assumed to be.
Hie, any advice on simulating a nozzle gas jet into high pressure water
thank you so much.... if the geometry is in 3D same steps can be applied?
hey Tanmay, Im having some issues with my solar dryer simulation, I would like to send you some questions.
i forget to say my project is turbulence. thanks again
hey Tanmay, Im having some issues with my solar dryer simulation, I would like to send you some questions.
Hi Tanmay, Is it possible to simulate a mixture of microsized particle mixed with water when both enters the domain as a mixture through multiphase model?
I believe that is possible. Depending on volume fraction of particles, you have to choose the multi-phase model accordingly.
hey Tanmay, Im having some issues with my solar dryer simulation, I would like to send you some questions.
Hello Tanmay, I`m trying to perform simulation of water mixing in stirrered tank. I have some difficulties with the solution because Reynolds number value saying that it is turbulent flow and the error correction always growing to infinity. Can i ask u about some review of my code (C++ and openGL for visualization)? If yes, how can i contact u? With best regards, Yurii.
Hi Yurii,
I am sorry but unfortunately I am very busy at this point of time.
If it is turbulent flow, then you better stick to the appropriate model for turbulence modelling. I hope that helps.
Tanmay
thank you so much how to do mesh interference in the volume of fluid in case of multiphase flow
Sir is it possible to get numerical data of volume fraction of sand at different time interval. I am trying to export data but it is only displaying results when time ends and not at different time.
You have to save data at every timesteps (or every few timesteps). This is done during the setup. In my last video where I simulated a lock exchange flow, I briefly mention it at 16:00. You can select what variables you want to save.
Hi sir, I am trying to simulate artificial ripening of fruit, in which ethylene gas is given to fruit in the presence of air. At the time of selection of model in fluent what model I should select (Eulerian or mixture or volume of fluid)???
eulerian models each phase independently.VOF is for continuous-continuous models and mixture for discrete-continuous model
Great tutorial Tanmay. Btw, what does the secondary phase diameter actually represent? I changed the diameter of the secondary phase to a value greater than the diameter of the tube, and surprisingly the secondary phase still flows inside the tube. Could you explain this as we wouldn't expect the s.phase to move in an actual scenario? Any inputs from your side would be very helpful.
The primary phase is the continuous phase and the secondary phase is the dispersed phase in my understanding.
grazie per la spiegazione
Thanks for sharing this tutorial
Please check Your email. I need your help.
Please accept my apologies. I wasn't active for a while here as well as on the mails. Can you resend the email?
GREAT VIDEO
Hello, thanks for the tutorial. I am working on the same problem, but in my case the channel is circular and it's rotating. Can I model that in 2D?
Shivam Salokhe yes you can model in 2D
what monitors should i create in this to judge convegence?
Usually the continuity convergence works good enough.
was great. i need a multiphase flow using eulre. granular between water and sediment ,if you can. i study scour around pipelines under the water.
Please use the tips in the video. Hope that would help as it is based on a similar situation.
hey how did you create and export the animation of sand volume fraction?
In the animate panel in post (section 5 of what you see in workbench), there is an option to save the video.
Sir can you make a vedio on how to give two different inlet condition in the same geometry with two different fluids my project and regarding fuel injection and then combusting them
I'll try. Thanks for watching.
Great video
Great tutorial Tanmay...I am working on a project in pyrolysis. Can you post any video on that topic. It involves eulerian modelling and it is too tough for a beginner like me to understand.
Can you please tell me a bit more? I am not familiar with it either.
@@TanmayAgrawal7 i am trying to simulate pyrolysis of coal (lignite). The pyrolysis process is the thermal decomposition of materials at elevated temperatures around 1500K in an inert atmosphere (absence of oxygen or air). The heat is provided via electrical heating. The coal on application of heat will break down into its basic constituents: CO, CO2, Hydrogen, methane. I want to visualize this process. Any guidance from you will be much appreciated.
A very nice video
I have encountered error (infinite growth of continuity residual value) despite following all the steps, did anyone have the same problem?
Perhaps you can try reducing the time step?
@@TanmayAgrawal7 Do you mean by reducing the time step size or the number of time steps?
Time step size.
hlw if i use particle in vof then how i input this into fluent?
Discrete Particle Modelling (DPM) has to be added additional.
when should i stop the calculation?
how to judge convergence?
I usually put a restriction on continuity error being greater than 1e-7
@@TanmayAgrawal7 roughly how many numbers of iterations?
Hi. Very good video. Can you make a tutorial video to simulate the water absorption process (dehumidification) with the use of silica gel in porous medium through Euler-Euler approach? Thank you^*^
I will try!
Thank you very much. Please let me know if you have succeeded and uploaded on RUclips. It will be a bit help. For your information, the simulation is concerning about getting the reduced relative humidity properly as the desired output parameter after the water absorption(dehumidification) of silica gel from humid air.
@@TanmayAgrawal7 Hi. May I know have you successfully simulate the absorption of water vapor in the air into porous medium of silica gel?
Hello. Sorry, I'm working on a different tutorial and busy with my usual studies at the moment.
Thank you for your reply. I managed to use a different and simple approach to simulate it. Good luck in your study.
MR. Agrawal, good video for Eulerian Multiphase Model. Could you please make a VOF model to simulate falling liquid film on a moving plate as well?
Hello, have you seen this video?
ruclips.net/video/kZXmwviVCXk/видео.html
Tanmay Agrawal do you have an email or phone number I have some questions if you don’t mind
It is tanmayagrawal7@gmail.com
any video on calculating mass flow rate on burning of hollow solid cylinder from inside
Thnks for the tutorial Sir
I am unable to post process it as the sand volume fraction option is not available in the contours.
Are you following the tutorial as it is? Did you make any changes?
@@TanmayAgrawal7 I followed it as it is. The viewable contours consist of sand density and doesn't show Vol Fraction of Sand.
It's strange. Did you not see Sand.volumefraction?
@@AtulAilawadhi Did you find the solution? I have the same issue.
very nice presentation
Thank you! Cheers!
Thank you sir
GOOD VIDEO,, Could you make a video on Multi-phase Eulerian dense discrete phase model flow SIC-abrasive and water. Thanks in advance.
Great video, Mr. Tanmay. Btw, do you have any advice/simulation tutorials of mixing ion-exchange resin (granular particles) and water in a vessel with air? like there are half water and half resin in a vessel, then we mix its with air (blow from the lower of the vessel)? Thank You, God Bless.
Sorry for the late reply. I haven't done anything like this before. Good luck with your project.
Great video! Does ANSYS capable to simulate much more sediment transport than this tutorial video?
I believe yes.
@@TanmayAgrawal7 Do you think it is capable to model mixed different size sand particles?
I think yes. You can define the distribution.