Simulation of Flow Through Solid Pipe/Channel in ANSYS Fluent | 08| Implementing the CFD Basics
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- Опубликовано: 3 апр 2017
- In this tutorial, I attempt to simulate the flow of a fluid flowing through a heterogeneous solid pipe/channel. The upper part of the solid pipe is wood while that lower is Aluminium. Because of the difference in thermal conductivities, an interesting temperature field is obtained across the length of the channel.
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Please contact me at tanmayagrawal7@gmail.com for any clarification or feedback. Thanks!
Nice Video!! Thanks for sharing, Please keep up your good work.
educating.I will try this step.thank u!
Thank you so much
clear voice and nicely explained. thanks for the video. i need a simulation of cooling channels in general or that of injection moulding in particular. can u please help me with that........
Nice video. A few question please. At time 8.45, I suppose you should change the material from aluminium to wood for the upper material when you set the thermal wall condition. Secondly, what if I want to set the wood as a porous domain that accept the inflow of water, what can I do? Thanks
Sir i saw this video of yours. It is fantastic.
Please tell me if i want to give the convective heat transfer coefficient on the outer walls of wood and aluminium, how can i do that. Thank you 🙏
Nice Explanation.., Will you please guide me how to plot nusselt number in 3D pipe flow from the geometry..?
Excellent video!! How can you compute average heat transfer coefficient "h"? Have you shown it in some other video? Thanks and keep up the good work.
Thank you for the comment. Unfortunately, not yet.
Hello sir,
Maybe my question is silly but I am using Ansys for not long :
In you tutorial, you are creating a geometry with 3 systems which are the wood, the fluid and the aluminum. However, I have seen in others tutorials that we can introduce a shell conduction that have a specific thickness and material at the interface. In that case, you can draw only the fluid part. So I am wondering, what are the differences between the two approaches ? And I don't see, in the case I am describing why it is interessting to put the solid material properties into a 1D wall layer if we can not observe the thermal distribution in the solid part.
Sir , why you didn't have used Share topology after gathering your 3 surfaces in one part ( to get conformal mesh )? I see that you have got a conformal mesh without using share topology function in DM
Want a heat transfer cylinder analysis on cfd & cfx having electroplated fins of different material wrt cylinder material.
your voice very clear & tutorial also good. can you share tutorial on Refrigerator cooling system(Evaporation & condensation)
For that I think you should refer to multiphase tutorial that I have here:
ruclips.net/video/kZXmwviVCXk/видео.html
For processes such as this, you need to have two phases into the system and this tutorial can give you an insight. Thanks!
Thanks for your quick response
There must be some error in assumption. Because it's common sense that Aluminium will gain more Temperature than Wood. Also from the engineering perspective Al have more conductivity and less heat capacity so Heat transfer rate to Al will be higher due to higher K and temperature gain in Al will be even more because of low Cp of Al.
I think your upper material is Al and lower material is Wood.
Yes, your opinion is exactly right
by the way, Your Voice Amazing
Thank you :)
Sir, I have a question. I'm doing my project on magnetorheological shear thickening polishing for brittle materials. However, I'm doing simulations with ANSYS software for CFD, and I have obtained satisfactory results. But for solid mechanics, I want to check when cracks and fractures will occur and how the penetration of grits or abrasive particles could impact this. Could you please help me with this?
Sir, In applying the boundary conditions at the lower and upper wall, when you select the wall part upper or wall-part lower, the side wall part of both the upper and bottom also gets selected. If i want to only apply say heat flux on the upper wall and nt including the side walls, how do i do it?
Then you have to define the different "named selections" in Meshing which would be reflected in Boundary Conditions in Setup. Specifically, you may want to define two separate selections, one for the fluxed wall and one for the sides.
ok thanks a ton sir..another thing...if it is required that heat flux is to be added to only a certain section of the top wall then do i have to define another named selection???
like say my top wall length is 58 mm and i wish to definea influx section till only 19mm and then a condensor section till 19 mm.
Dear Tanmay,
thanks it was a great video but I stuck with a problem in my case I'm a pipe flow with pipe having an inner and outer diameter of 0.02 & 0.025m I am working with variable polynomial properties which depends upon temperature , performing all relevant steps as you depicted there is no heat transfer between solid pipe and fluid even though on shadow surfaces the desired heat flux is obtained and the problem persists only for variable properties not with constant.
Can you check somehow if your property polynomial is actually working?
how you creates 3 parts from the sketches. i am getting everything as a single part
You first create individual parts (Surface from sketches) and then combine using right click and "Form a part"
is it important to create a domain before meshing ? as I have imported the geometry from Solidworks?
Not necessarily. You can import the geometry as well :)
what if we use air instead of water ... there will be forced convection .... how to model that??
You can actually use the forced convection BC if that solves your purpose.
Why the temperature of aluminium is not raised nd shown uniform? DO you have any experimental result of this?
Unfortunately, no experimental results for this fictional case.
sir can u please tell me how to obtained non-uniform heat flux on the surface of a cylinderical tube.
Can you please tell me the problem in detail on my email at tanmayagrawal7@gmail.com
ok sir
can you show how you create the geometry please?
Thanks!!
Please go to 2:08
Excellent Video's Dear Tanmay,
I was unable to create 3 separate rectangles, whenever I create them they become one rectangle as a whole.
would you please elaborate the model in Design Moduler, I mean how to create Solid-Fluid Interfaces.
Actually it is easy to catchup from Meshing onward, sometime it is difficult to catchup with design, if already model has been made.
Thank,
and once again, Sir Tanmay, Excellent video series.
I have the same issue
you can use freeze after creating the upper and lower wall and then make the fluid wall. Then select all three surfaces and click make a part, hope that helps?
Sir can you please explain the concept of interfaces in a 3 D model?
They are definitely more complex. I will try to explain them in some video.
So wait, why did aluminium didn't got heated by the water? because you did not considered the thermal capacity?
Sometime during temperature simulation, it has been observed that temperature increases alot which should not be. Like the wall temp 873 K and fluid is 1173 K. But during simulation it increased to 5000 K. Can you or any one suggest the reason behind that
Incorrect setup generally.
do you have a tutorial on solid-liquid flow system? Thanks
What do you mean? I can make one definitely if I don't.
hi! I meant if possible can you do a tutorial on a solid-liquid flow or solid-liquid slurry flow in a simple pipe? Thanks.
@@asharmd2001M
can anyone here help me to construct the three surfaces? I keep getting only one surface
if you are making geometry in ansys design modular, you have to use FREEZE option to make three surfaces.
Excuseme Sir , would you like to tell me how i change tube materials, if i have to get difrnt results
You have to go into materials and add a diff. Material and then go into cell zone to apply it.
@@TanmayAgrawal7 would you give me ur email for further help
It's tanmayagrawal7@gmail.com
Hi if m giving the heat flux frm bottom wall the heat transfer doesnot occur in fluid region.... What m i doing wrong... Pls help me out....
Can you email me? tanmayagrawal7@gmail.com
It might be a meshing problem. Inserting inflations to better capture the thermal gradient at interfaces can be beneficial.
you missed to mention that you ignored the convection between water and the upper/lower walls. This is very important and you have to emphasize it not misleading the viewers! Bad tutorial!