ANSYS Fluent Tutorial | Steady State Heat Transfer Through Composite Cylinder Using Symmetry Model
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- Опубликовано: 22 сен 2024
- In a Composite Cylinder, the inner layer is Aluminum at a temperature of 473K, there is convection from the outer layer. We need to find out the heat loss from the Composite cylinder and compare the CFD Result with the Theoretical result and obtain the error.
What will you learn from this tutorial?
- Creation of a quarter model of the conjugate cylinder.
- Meshing the cylinder
- Assigning Symmetry Boundary Conditions in setup
- CFD-Post Processing, Preparing the Contour for the full model using the contour of quarter model.
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U have the best tutorial ever exist
thank u for the information teacher 👍👍👍🙏🙏🙏🙏👏👏👏👏👏
most welcome :)
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Thank you.
This video is really helpful. Can u prepare a video for axial flow hydrocyclone!!
Thank you, will try to make a tutorial.
Did you have a tutorial for insulation cryogenic pipe with quarter symmetry geometry. Urgent task
i tried doing same with rectangular cross section of finned tube radiator but my flux is getting negative.(which means my surrounding is heating the tube). can you tell or show about heat flux or its sign changing while performing CFD.
that might be very helpful...
thanks for sharing such knowledgeable videos...
you are results are correct, the heat out from the boundary is negative and heat into the boundary is positive, its one of the concepts of thermodynamics. You can also observe in @18:47 in this problem, also the result of heat loss from the outer surface is negative.
thank's for making this video. comparing simulation and calculation is best way of explanation. I am curious, how if this geometry apply on natural convection condition ? I have seen your video about natural convection, but unfortunately it is in 2D, and no calculation theory to compare in that video. let me know your respond and don't hesitate to say if may be there's something wrong in my sentence.
Yes, you can compare the results with theory using the general convection heat transfer equation if you want convection to occur.
@@AnsysTutor thank you for your respond sir. what do you mean by general convection here ? is it same with natural convection ?. my curiosity here is, how to apply natural convection in this quad cylinder and make it prove in calculation ? because I already tried to apply this geometry in natural convection mode, but some of things are errors. I am student which is starting to interest this kind of software. if we can discuss more, it will help me a lot, if it is impossible, I also understand your condition. Thank you sir.
Hi there. Great video thanks! I'm getting a heat flux value of 58.56. I tried to follow exactly and triple checked. Can you think about a cause?
Meshing might be different.
good tutorial, but i want to ask. why do you make your geometry into 1/4? why dont you divide it smaller, maybe 1/6 or 1/8?
There is no reason behind this, you can divide as per your requirement, only thing is to calculate that factor accordingly.
Hello. I have a question . I want to know if I want to include the internal emissivity and external emissivity numbers in Fluent they should be similar, I went to the help section of ansys and there is just explained that the two are different with each other and not explained that how they should work.
When I look for material emissivity only gives me for one emissivity.
I will glad if You help me.
Thank you in advance for guiding&helping me
It depends on which radiation model you have selected.
Could you please tell me what's the convergence criteria?
Each time there is a numerical iteration, it generates a residual or its the "error value' with respect to previous result. Convergence criteria defines what should be the minimum error. if that values of minimum error achieved by all the numerical equations then solver stops further calculations and displays "solution converged".
I want to model absorber tube of parabolic trough collector with a steel absorber tube and glass cover with vacuum in between. Can you guide me how to simulate heat flux as well as radiation between absorber tube and glass cover simultaneously? I will be highly thankfull to you.
Sorry , don't have much experience in Simulating that. I think You need certain kind of UDF to model the vacuum region, as its difficult to properly model the vacuum zone using the default fluent settings.
@@AnsysTutor sir I have a question. I have designed an absorber tube of specific thickness and a glass cover of specific thickness with vacuum in-between glass and absorber while fluid flows inside absorber tube. I apply constant heat flux on absorber outer wall and absorber outerwall shadow both, I can see conduction effects of flux in the vacuum as it should be (right now normal still air is used) but heat is not transferred inside the fluid flow I don't know why.
Remember, if I put absorber outer wall shadow to zero heat flux, while applying constant flux to absorber outer wall, I the conduction in vacuum (air for now) just vanishes.
*Radiation is OFF right now*
**I want to simulate effects of heat flux on the fluid flow as well as heat loss from absorber outer wall to the vacuum and then to the glass cover as well**
How did you model that problem?? Any article or something? How did you create vaccum?
Sir suppose a bike is running at some speed and i have to consider the cfd analysis of fin of it . What will be the boundary conditions and can i solve it in steady state thermal analysis ? If possible please make a tutorial of it sir
yes, you can analyze it in Steady state thermal if you know the Convective Heat transfer Coefficient value, by providing Convection BC on the Fin surface you can get the result.
If you don't know the convective heat transfer coefficient value then it would be better to do it in ANSYS Fluent with a enclosure fluid domain over the fin surface and only you need to put the wind velocity as input and heat /temperature on the fin surface.
@@AnsysTutor sir how to provide velocity in steady state analysis
@@AnsysTutor thank you sir
there is no direct way you can provide velocity in ANSYS Steady-State Analysis Workbench Solver, you have to calculate the convective heat transfer coefficient and assign that in the convection option. But in ANSYS Fluid Flow (Fluent) you can assign the Velocity in the inlet Boundary conditions, as "Inlet velocity ".