Simulation of Pipe Flow in ANSYS Fluent | 02 | Implementing the CFD Basics
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- Опубликовано: 27 июл 2024
- In this video, I will demonstrate the flow situations that usually happens when a fluid enters a pipe with certain inlet velocity. I will be talking about the flow profile development and associated flow features.
ANSYS Workbench file can be accessed at onedrive.live.com/redir?resid...
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In case of any questions, feel free to drop me an email at tanmayagrawal7@gmail.com
Thank you so much, very good tutorial.
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
u're the best dude
wow......bro u r awesome.......those who know nothing about fluent can learn from your videos.....
Thank you very much, Really helpful tutorial
Helpful..Good narration
Its so nice to see a tutorial that isnt just silent! thanks
Haha, surprisingly a couple of my tutorials are silent 😁
thanks bro , really helped me out
Hey. Great tutorial. I first followed with your example dimensions. Then I tried for a diameter of 500 mm and a volume flow rate of 2 m^3/h (~0.00283 m/s) and it worked perfectly. Showed the velocity profile as I was expecting. I have a lot to learn yet. Thanks for sharing this video.
Glad it helped!
Nice video. Please do you have a video for two-phase flow boiling in a vertical pipe show different flow regime
Very nice video, thank you
Hello
The undergraduate project is the same.
wish you luck.
Thank you so much for your efforts.
Thank you.
i want one help sir reheater tube different material analysis using cfd in anasys17.2
Hey, i have a question. Here the inlet velocity is supposed to be 0.0005 but its much higher in that result and also the inlet velocity should be half times the outlet velocity as mentioned in the books but it is not so.Why is that?
dear Tanmay
I have a problem in solving Ur solution
the error in setting up domain it shows
" The current data has not saved.
Ok to discard?"
what I have to do
please help me
I followed Ur all instructions of video but don't know how it come repeatedly
Hi Tanmay.... Would you please help me out with heat transfer in Al2O3
Hi. I would like to ask for your recommendation on how to setup my ANSYS fluent. I am currently is doing analysis of separator 2 phase (oil-gas). I have tried many times to setup my simulation. However I could not get the result that I am supposed to get. I am using VOF modelling. Appreciate if you can help me on this matter.
Please have a look at this tutorial, this might clear some of the doubts, perhaps:
ruclips.net/video/kZXmwviVCXk/видео.html
Thanks alot
Great tutorial sir thank you
Glad you liked it
thanks bhai
hello my fr can u help me how to define the velocity fully developed by user define function
I think you can google it. I saw someone either on CFDonline forum or on researchgate, I am not sure where, but they have a tutorial for that, otherwise you can always make an extended geometry for the developing region
I am having a lot of problems with UDF. I need to create UDF for viscosity, and for wall slip. UDF for viscpsity is a go, but look woerd af. And i can't seem to get the UDF for wall slip to work...really appreciate any help
Your videos are really helpful sir..I am doing analysis on Microchannel heat transfer under H1 And H2 Boundary condition.Please upload some videos of it.Thank you
I am not sure about Microchannels as I have not yet implemented my work on small-scales. I hope the general principle should remain same.
Hai hello...can you help me a problem relating microchannel please
Thank u am heppy
I was looking for the plot or diagram where I could compare the output velocites in my inlet manifold model in which there is one INLET and four OUTLET. It would be help if you could tell me how to plot a graph where velocities from all 4 outlet, at a particular air input velocity, is represented in one graph. Then it would be easy to tell that from which outlet the outflow velocity is maximum or minimum.
Hi Abhishek. Maybe you want something similar to what I have described in this video:
ruclips.net/video/nKkMoLwQCTE/видео.html
Here I am plotting temperature profiles at different cross-sections, you can just select velocity (I have also shown that in the tutorial there). Hope it would help you.
This solved my entire problem. I didn't knew that we can find exact value of velocity by putting coordinates. Thanks :)
There is a lot to explore in this software and I am also learning just like you. Glad it helped.
dear sir
i need to simulate a fluid flow through porous media and fracturing the formation ... which module can be used via ansys
ahmed hamdy please refer to the newer video called Fluid Flows Through Solid Pipes. It might give you some insight if your pipe is porous. Thanks!
Great video, one question though - @9:53 how did you get the symmetry planes? I only got inlet, outlet and walls. Do you have to set it in "meshing" ? Please clarify.
Thanks
Is it still a problem? Apologies for late response.
I got it thanks!
I cant find the bit where it changes mesh from coarse to fine
Sir my ansys analysis results not open how can i solve.
Thank you sir. For ur wonderful support to boost our knowledge in CFD solver.
Request a small help from ur side that how can i have force analysis in ansys fluent using pressure results , we have previous in the same domain.
You can define pressure inlet and pressure outlet BCs at inlet and outlet respectively.
@@TanmayAgrawal7 sir,thank u for ur reply,but as we know force is integral of pressure*area.i want to how to get this force results whether any option in solver or we need to give UDF
can u plz help me? i wanna know how i can find the velocity magnitude according the reynolds number? i m using cylinder in channel
You should be using average velocity across the cross section and cylinder diameter to define Reynolds number.
The same: You're the best. I tried to make it using a 3D geometry, but I wasn't able to see the characteristical velocity profile of laminar flow. why is that? because it can only apply with 2D geometrie's?
No, definitely not. Are you sure you're using the correct boundary conditions?
could you please post some videos regarding sediment + water flow through pipe analysis.
As a matter of chance, my latest video talks about that precisely.
ruclips.net/video/qCAIR_5TRYU/видео.html
hello. i need to use ANSYS Fluent for thermal analysis in micro pipes (square and triangular) using nano fluids. it would be great to have your help.
Never done it before but have you tried using the similar approach as my other videos in macro-sized pipes?
Have you uploaded videos on square or triangular pipes? I haven't seen it yet. I will check those.
hello. is ansys fleunt simulate perforated pipe inside open channel with bend
+shaimaa said I believe ansys has the capability to do what you're saying
hi, which model would be appropriate for 2 phase ANSYS-Fluent simulations ?, am modeling steam condenser.
It is parameter dependent. Generally speaking, it depends on the amount of secondary phase. As a lucky guess, you should begin with Eulerian. For more details, refer to the user guide of Fluent, it has all the details.
You might say, where you are greeted settings for the simulation of condensation? I have not seen such. The two-phase movement of air and liquid - yes, the evaporation of the solid mass - yes, the evaporation of the liquid - yes, condensation - no.
Hi, Sir !! What is the cross-section of the pipe ? Is it circular or rectangular or something else ? Why doesn't ANSYS ask about that ? Or will it assume it as Circular by default ? Please clarify...
It's my mistake for this video. If it were a pipe, I had to choose the "axis-symmetric" option in set-up. In this video, it is behaving like a rectangular cross section. However the flow profiles are essentially identical in both of the cases.
I am having difficulty in cfd post. In 3D viewer my model is not showing, instead blank screen is shown. What to do???🤔🤔🤷🏻♂️🤷🏻♂️
if in this video i have to apply slip condition on upper and lower wall so how can i do the same? i have slip velocity coefficient value as 0.01......so where is the option for applying slip velocity coefficient.....
You need to calculate slip velocity from the coefficient and then use it as B.C.
@@TanmayAgrawal7 so after solving the slip velocity where i have to add the same in the ansys
How can we know the pressue drop in a pipe ?
You can plot a pressure profile along the centreline? How to plot this is explained in another video of mine :)
@9:57 how did you find that flow turned turbulent flow ? please explain. Thanks
1) Reynolds number exceeds critical Re usually 2300 (you can calculate it)
2) Parabolic profile in laminar flows, mostly-flat profiles for turbulent flows (that's why all red in the middle, graphical identification)
Thank you @Tanmay Agrawal. That was helpful.
I have few questions, Please answer me if you dont mind.
1Q) When you say pressure dropped in pipe, are you referring to the static pressure or dynamic pressure or both (total) Pressure ?
2Q) I got static pressure zero , is that possible (Why) ?
3Q) When asked surface intergral -area weighted average of inlet and outlet , Ansys gave me both the values which made sense but what is net value ?
4Q) In Horizontal pipe flow (h=0) and hence static pressure should be zero (rho*g*h).
What does ansys mean when it produces a number on static pressure ?
Thanks for your time :)
Usually it is called as the total pressure in the navier-stokes equations, that drives the flow itself. Static pressure is related to height (at least in theory). In dynamics, we do not deal in pressure, we deal in pressure-differences.
For the surface integral, what quantity are you averaging? Is it the velocity? Then the integral is discharge which should be same on inlet and outlet (because of continuity equation)
I did >> Surface integrals >> Area -weighted Average >> and selected inlet and outlet >> checked both Pressure and velocity in the axial direction of the pipe.
Ansys reported values of both velocity (which made sense) and static pressure which is non-zero (didn't make sense). The net value didn't make sense.
How does Ansys calculate net value? (is it not the difference between two quantities selected ?)
Graph of static pressure (and total pressure) decreased when plotted along position (which is correct) while dynamic pressure is increasing (which is correct).
+Tej Swaroop I need to check on that. Perhaps because of the non-zero pressure at the boundary, the integral itself is non-zero. But again, you need some physical quantity to make sense of any mathematical formula e.g. Discharge in the case of velocity.
how can i assign a material to this problem ( like Al wall or Cu wall)
In that case, you have to modify the geometry itself. There would be a thin wall outside this geometry. Thin wall would be solid while the inner part would be fluid that's flowing. This wall can be assigned material in "Cell Zone Conditions" in Setup part.
in same case i want to flow two phase homogenous mixture(liquid-solid) is it possible or which model is select in multiphase modal
That's not so easy to answer without knowing enough details. For multiphase flow, you need to select the model depending upon the behavior of individual phases, their concentrations etc. You can try proceeding with the Eulerian multiphase model as that is usually used for addressing a wider variety of multiphase problems.
Is this circular pipe
Good
Thanks
Sir can you upload how we add material on ansys fluent for heat pipes and if you could do analysis of any of heat pipe it will be beneficial.
Or rather why not take a simpler approach? Modify the existing material, change it's name and properties to match yours. How does that sound?
Sir I have to define two material in same geometry
the inner pipe is a porous structure and the outer one is solid
Now I am not finding a way in ansys fluent to define different material for these two
Is there any tutorial available of yours in which simulation of heat pipes is shown step by step
please help
+crack gate you have to define them as two separate parts in geometry itself and then in the cell zone condition in setup, you can assign different materials to them. As of now, maybe I don't have a tutorial for that. If you need a private tutorial, email me at tanmayagrawal7@gmail.com
@@crackgate4050 sir, I have the same problem. If you find the solution to solve it please help me.
could you make a video on fluid flow in Superhydrophobic microchannels
Sorry, I haven't worked with that.
thanks please I need your help possible ?
Naji Abdullah tanmayagrawal7@gmail.com
please email.
Sir please (Ansys Fluent 14) add a 1 complete video of Helical coil (tube in tube) heat exchanger to find all fluid properties like Reynolds number (Re), Nusselt number (Nu) to draw a graph 1. pressure drop vs Re
2. heat transfer coefficients vs Re
3.heat transfer coefficients Vs Diameter at different Re
4.Nu vs Re
5. Tube Specification
a) Copper tube Outer dia. 25mm inner dia 23mm (Outer Tube)
b) Steel-316 tube Dia 6mm (Inner Tube)
c) Length 3.5 m before coiling
d) number of turn 5
e) Re varies 350 to 6500
Please check the newly published video. It may answer some of your questions, thanks!
i need your help
Please email tanmayagrawal7@gmail.com
Sir this is ganesh yalla mtech in pipeline engineering my project is application of phase diagrams in multipase flow system plz explain this sir zero knowledge for me
net is slow
Thank you so much, I have some problems with my fluent cases, can I ask you some questions by email? What is your e-mail?
It's tanmayagrawal7@gmail.com
my friend Tanmay Agrawal i want your Emil please help me about my skech
noni mek tanmayagrawal7@gmail.com
Sir please upload cfx tutorials
Unfortunately I have worked mostly on fluent.
Haha Colorful Fluid Dynamics
Thank you for this video. Knowledgeable and Helpful. If you could do some problem based tutorials, Sir, Could you please provide email contact?
tanmayagrawal7@gmail.com
@@TanmayAgrawal7 Thank you. I Will contact you at this address. 🙏
Good morning sir next month we are launching India's biggest online educational website and you can upload your course and you can quote your best price for the course
Can you please email me at tanmayagrawal7@gmail.com with more details of your website?
thanks Tanmay for such a simple yet promising inputs..... can you share your mail id, so i could reach out to you....
It's tanmayagrawal7@gmail.com