Simulating a Jet Impingement in ANSYS Fluent using Eulerian Multiphase model | 17 | CFD Basics

[@nicolamenga8943]

Tjank you for this very useful tutorial. I have a question. At [10:38] you check the cell zone conditions. By opening the "surface body", you set the phase as water. Why? The surface body indicates the domain which at the start of the simulation is filled with air. Why in the cell zone conditions you set the phase as "water"? Thank you 😃

[@kjyap98]

my man, thanks legend

[@gotetisatyanarayana4847]

If the jet hits a very hot plate, one more phase liquid vapor exits. Then how to modify the physics of problem

[@TanmayAgrawal7]

Oh then it might be quite tricky! You have to incorporate boiling model, I haven't checked it out yet.

[@15ayushman]

How to measure the depth created by a mixture of gas+particles jets coming out through the shock tube and hitting the material placed perpendicular to the jet?

[@monikasiyal9841]

Sir how to remove courant no. Error from the model. Before starting calculation this error happening again and again.calculation is not starting.and convergence tolerance can't be reached telling this

[@trending_india6471]

As Courant No., C ≡ u∆t ∆x, so reduce the time step size in Run Calculation part.

[@samanthajonesjackson4131]

What would you have to do differently if it was a submerged jet? Like if the jet was going through water, as opposed to air.

[@TanmayAgrawal7]

You have to use an additional domain around the jet. It would be worthwhile to checkout my tutorial about a falling droplet, that would be a good starting point.

[@joseffreebird2372]

Hi i will be happy to cooperate, I am student working on jet impingement on hot plate.

[@ytdsm]

thanks for this video. how should I proceed to mist flow cooling on a moving plate? Mist flow consist of water droplets in an air stream

[@AMANPANDOH]

Sir if the air is also moving with some velocity along with the free jet, how do we initialize?

[@caleblee3423]

Could you record a video talk about particle track in CFD-post? Thank you so much

[@bhavindesai631]

Can i add abrasive partical with water....?

[@TanmayAgrawal7]

Yes. You can use multiphase flow models

[@anuragray6408]

Hello sir! Can u please tell me if this simulation can be done using single phase that is air jet exhaust in ambient? Does the boundary conditions remain same or do I have to do something different

[@b75_vijayvenkatarajesh89]

sir I need 3d analysis where can I get it?

[@catthan]

Thanks for the tutorial. Could you help me understand why 1. You're not using DPM and/or VOF for this and 2. why you patch the air material instead of assigning it as a mesh zone. You can point me to any reading material to save time. Thanks in advance.

[@FranciscoGarcia-hz2th]

I hope if you can help me to use the impimging in air and how to enter the concentration of Co2 too

[@abhishekskumar5586]

But sir, didn't you put the cell zone condition as water in the interior surface? Then how is it that when we initialized it, it was air in the interior surface? I'm very new at this. Sorry. Could someone explain?

[@abdullahshaikh2432]

Hello Mr Tanmay, During setting boundary condition when I select only water for Jet_In it doesnt show the momentum tab active hence I cannot input any velocity it shows only Multiphase tab.

[@silhouette6733]

May I ask if we can get the stagnation region of the impingement from the simulation?

[@TanmayAgrawal7]

In my experience, RANS simulations where you’re trying to resolve free shear regions (jet) as well as the wall (stagnation), may not do a great job in both the places simultaneously. But yes, you may get some information. Extract the velocity profiles.

[@SAIKRISHNA-it6jv]

Is it just because air is the one initially present in the domain, so it's primary phase. Isn't it the primary phase needs to be continuous and if so water will be the primary phase right ....?

[@AmirulMakhtar]

hi sir. i follow each of your step until the calculation part. since you didn’t show how to calculate, so i press the calculate after set the time step size and max iterations as suggested. but still i cannot generate the results and dont know how to produce it… can you please help me

[@traavel_bug]

Thanks alot..effort appreciated 👌

[@anshumansinha5874]

Can I track the contact area between the 2 phases? Let's say only in the lower rectangular domain of your geometry, Can you tell me the surface area of water which is exposed to the air inside the chamber?

[@abhishekbihari177]

Thanks you, but what if i am using a high pressure (1 bar) argon gas jet in a pipe. Do I still need to use the Multiphase - eulerian model?

[@mechanicaldaa5323]

Yes

[@nitinnegi6797]

Very helpful

[@monikasiyal9841]

Sir from the simulation I got temperature-time plot but heat flux-time plot is not coming what are the reasons? please tell sir

[@vimlakumari4912]

Hi Tanmay Thank you for the video,im struggling with a hot plate problem, how do i set boundary conditions for the hot wall, the phases auto change ,how can i avoid this

[@TanmayAgrawal7]

Is it a multi phase problem? What boundary conditions are you using? Constant temperature or heat flux?

[@PriyanshuMisra-iu3td]

Thank you Tanmay for the tutorial, may I know what could I do at the inlet if I were to change this to a pulsating jet instead of a continuous one?(Question is open to the users as well)

[@TanmayAgrawal7]

I suppose you’d need to write a user desired function for that.

[@priyanshumisra471]

Yep worked out using multiple nested if conditions thank you for that

[@TanmayAgrawal7]

Perhaps you can share the UDF here so others could be benefitted by that.

[@manelsouguir8126]

Which scheme in solution method have you choosen please ?

[@TanmayAgrawal7]

The default scheme, i.e. SIMPLE algorithm.

[@manelsouguir8126]

@@TanmayAgrawal7 thanks you.

[@akashkumardigal656]

Thank You very much Sir

[@pushpendraverma1554]

I just started working on jet impingements and this video turns out to be very useful for me, Thankyou Can you plzz upload a video with 3D model and jet hitting the hot plate

[@TanmayAgrawal7]

I will make a note of it and see what I can do. With the student version, I restrict myself to 2D but the idea stays the same.

[@salmanouh9549]

Hi, Mr. Tanmay thanks for this helpful video. Would you give some ideas in how to implement a liquid spraying in a rotating domain?

[@TanmayAgrawal7]

Thank you for watching this. Sorry, but I haven't tried it before.

[@rahuldevpandey3614]

if two fluid like water and oil are mixed then how can it possible to solve in ansys , and which model can i used and please tell the ansys setup solution.

[@TanmayAgrawal7]

It depends on what your objective is. Try with Eulerian model if the problem is general.

[@rahuldevpandey3614]

@@TanmayAgrawal7 actually my problem is that to visulise the instability at the interface of two fluid where porosity and permeability properties was given

[@TanmayAgrawal7]

You might need fine grid-resolution first of all in addition to the various models.

[@frankstinson1949]

can we apply same method for 3d models ?

[@TanmayAgrawal7]

Think you can.

[@tabletoptutor555]

Bhaiya please upload google drive link; I am unable to time step for animation

[@md.samsularefin6857]

Hello Agarwal ! Its a good tutorial that helps me so much. Could you please give me some suggestion about the fact that how can I use ANSYS Fluent as a beginner and also how can I develop on jet calculation by using ANSYS Fluent??

[@TanmayAgrawal7]

Please refer to my previous videos. I have a few very beginner tutorials as well

[@santoshdivate5397]

How to analyse when the jet is unconfined ?

[@TanmayAgrawal7]

In that case, you should use a periodic boundary condition on the side walls.

[@santoshdivate5397]

@@TanmayAgrawal7 where to select it ? Bcz as a whole taken as outlet.

[@TanmayAgrawal7]

Not entirely sure how to do that in fluent. Please try looking up on Google.

[@shoibindia9472]

I want to a plate where jet is hitting

[@TanmayAgrawal7]

This as you can see is very similar. You can model the bottom domain to be wide enough to simulate a plate.

[@shoibindia9472]

@@TanmayAgrawal7 i want to hit high pressure water around 300 MPa what will be the boundary conditions. Thank you

[@TanmayAgrawal7]

You can try pressure-inlet boundary condition in that case. Make sure to use a small time-step and fine mesh size.

[@shoibindia9472]

@@TanmayAgrawal7 can i take plate as solid ( any material ) Actually i want to see the stresses on solid plate.

[@TanmayAgrawal7]

I think yes. As long as you know the basic mechanical properties, you can have any material. A rough estimate can also be seen in this tutorial if you use pressure contours 😃

[@akashkumardigal656]

Sir plz make a video on 3D jet Impingement

[@nikhilsonar98]

Very useful video Sir , I am doing a project on study of heat transfer characteristics of circular jet impingement on (constant heat flux) flat plate. In which jet to traget spacing, Reynold number is important. I want to do CFD analysis for this Please can you make video solution on it because no video on it on KZbin So it will helpfull to many people who want to do research in this field Please sir make video as soon as possible

[@akshayyennam6956]

Sir I need some help in doing my project. So would you give your mail id where I can explain the problem? Actually I am getting some floating point error while calculating, so I would really appreciate you helping me.

[@TanmayAgrawal7]

[e-mail]

[@baseljamal8907]

Number of time steps = 0 ? ...

[@TanmayAgrawal7]

I had already finished the simulation and was teaching through a demo case :)

[@shivamsingh4787]

Hii sir.. I'm also working on similar type of project. Bt facing lots of prblm.. So if u can help me out..

[@TanmayAgrawal7]

What problems are you facing?

[@akashkumardigal656]

Make a video on 3D jet impingement

[@TanmayAgrawal7]

I'll try, thanks for the suggestion.

[@avgspacelover]

My solution is diverging,and how to make sure the water reaches bottom

[@TanmayAgrawal7]

Did you follow the tutorial? Or did you introduce any changes?

[@sadiqalquraishi5297]

Amazing video, thanks. my question is how to simulate corrosion by the water jet impinging on a flat surface

[@avgspacelover]

I have taken 0.001 time steps and no. Of time steps 200

[@avgspacelover]

It is not converging

[@danimahendra7125]

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[@danimahendra7125]

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[@danindraadipratama2694]

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