ANSYS Fluent Tutorial | Sloshing Simulation in ANSYS Fluent Without UDF | Named Expressions in ANSYS

[@moparikshya]

Thank You Ansys Tutor ! From your tutorial videos, I have learnt lots of things.

[@AnsysTutor]

You are most welcome. @Mo Parikshya🙏🙏🙏🙏

[@jloudefonty3231]

Great video, thanks for the explanation and demo

[@AnsysTutor]

Thank you. ❤️

[@aliramezani4561]

Hi dear friend This was a really cool idea and I was able to use it. I hope you continue to be creative as well

[@AnsysTutor]

Thank you Ali.

[@aneesurrehman4135]

great work ... please make video on oil container sloshing effects

[@AnsysTutor]

It can be done similarly, only you need to change the size of the container and the displacement.

[@NitishKUMAR-kn8pz]

Nice video, but sir at the interfaces of liquids you didn't apply any slip condition like I want to apply navier slip boundary condition at interfaces , so can you please apply Navier slip boundary condition at interfaces and make a video, as I'm not able to apply it using standard boundary condition as well as using UDF. Please........

[@manojdandin2903]

Please can u make vedio of extracting results such as time history for force, displacement and engery of this model

[@정현준-v4z]

Awesome! It's really helpful. Thanks sir

[@AnsysTutor]

You are most welcome.

[@manojkumar-cm2ym]

good explanation, could you provide some videos on multiphase flow reactors in ansys

[@AnsysTutor]

Will try to make a tutorial video if possible.

[@manojkumar-cm2ym]

@@AnsysTutor thanks

[@balajisrinivas7688]

Thank you! Can you provide videos on condensation through porous medium?? Or flow through porous medium?? Very grateful

[@AnsysTutor]

Will try to make a tutorial if possible.

[@balajisrinivas7688]

@@AnsysTutor Thank you🙏

[@lampfall7915]

Good video , please could help me with my two phase modeling which I need to patch the inlet surface with water and air because I have superficial vélocipède

[@AnsysTutor]

In inlet boundary you could define the volume fraction of each phase. You should patch the volume of the geometry not the surface.

[@lampfall7915]

@@AnsysTutor thank you teacher I really appreciate your help

[@hazemkhaled2248]

great , do u have new fluent tutorial guide to practice more for self expression as i need to use it in adsorption cooling cycle , thanks

[@AnsysTutor]

Will try to add new tutorials soon.

[@softwaretraining-naval]

thanks for sharing!

[@antares365]

Great video, very interesting to know about multiphase problems. I have a question: is there some way to write the named expression in older versions? Because the "Named expressions" button doesn´t appear in my tree.

[@AnsysTutor]

Named expression is available in latest versions ,for older versions you need to use UDF.

[@dimitrispapanikolaou2325]

ti 8es re?

[@lilianasanroman7882]

Thank you. Question: is it possible to do it, but in the Y direction I mean, considering up and down in order to obtain a surface like in splashing object?

[@AnsysTutor]

Yes its possible.

[@mtjmbl3252]

Great video. Can you make a video to show how to simulate sloshing of water in a tank with floating elastic thin plate on the surface of the water?

[@AnsysTutor]

Will try to make a tutorial if possible.

[@leopoldadenot8053]

Hello thanks for your video. What parts can I ignore if i only want to have one fluid and air instead of two?

[@AnsysTutor]

You can skip the patching of the second zone and its geometry.

[@sarathchandran9521]

Is it possible to extract slosh frequency, slosh force on tank wall and moment from this study as these parameters are essential for explaining severity of slosh. Then please explain the procedure.

[@manojdandin2903]

Sir did u get the answers for this problem how to find above mentioned requiments

[@1507유하윤]

I love the music! can I get names of the songs??

[@AnsysTutor]

Its in the youtube audio library. See in the description.

[@NitishKumar-bt2wx]

How we can apply navier slip boundary condition at liquid interface and no slip boundary condition at walls? please answer or refer some documentation or videos , if possible.

[@AnsysTutor]

You can apply such slip boundary if you choose the Turbulence flow model.

[@VelkanXX]

Hi, is possible to add an acceleration value to the container base that doesn't changes periodically but by given acceleration values every 0,1 seconds?

[@AnsysTutor]

Yes it can be given, by tabular transient table data input method.

[@ΚωνσταντίνοςΒολικός]

Hello, great videos, i am trying to do the same but with only one fluid and air and i can't figure it out. Also i am trying to add walls with thickness, not just lines but i am not sure how to name them (named selection), could you provide any tips? Thanks a lot!

[@AnsysTutor]

In that case you dont need to add the species transport model. You can model the wall in ansys design modeller and provide the named selection to it. In cell zone conditions select the material for the glass.

[@ΚωνσταντίνοςΒολικός]

@@AnsysTutor Thank you very much, i will continue watching your videos and learning from them.

[@akuaalder9819]

@@AnsysTutor i keep getting this error" Warning: Flow boundary zone (top_outer_wall) is adjacent to a solid zone (air_domain). This problem MUST be fixed before solution can proceed!" any idea how to solve it?

[@akuaalder9819]

apparently aluminium is the default material of my air domain. Any help?

[@akuaalder9819]

How do we read off the sloshing height?

[@phoenixlee3180]

Hello, just a quick question: why did you initially slice it into 3 bodies, when you only patched two phases? Wouldn't it be better to just slice it into two bodies?

[@AnsysTutor]

We have 2 different liquid layers and one layer of air top of it thatswhy 3 bodies.

[@phoenixlee3180]

@@AnsysTutor Oh I see! Sorry, I must’ve missed that!! Thank you for the tutorial!! I just started and it’s super helpful!💙💙

[@1507유하윤]

감사합니다.

[@NitishKumar-bt2wx]

why you kept other options as default like using 2nd order upwind scheme as momentum discretization but first order upwind scheme as liquid layers 2? See the time 16:53 minutes in your video. Please explain . I know about these methods but not understanding your about the reason of your default options. Please Explain.

[@AnsysTutor]

For more accuracy you can take second order discretization for liquid layer 2, it would generally take more time to solve.

[@NitishKumar-bt2wx]

The fluid 1 and fluid 2 that we used , are these any physical fluid or it's just imaginary fluid you considered? If it's physical fluid then mention them . Please

[@AnsysTutor]

You can take any fluid, make sure that fluid have different density and denser fluid should be patched at the bottom layer.

[@salahhasan1365]

Can we simulate all fluids layer in the same simulation ( 2 liquid + Air)

[@AnsysTutor]

Yes.

[@unnikrishnang3601]

Whether you have considered surface tension here?

[@sajidmomin7759]

I am trying to simulate 2d sloshing tank phenomena with air and water as fluid. The water in the tank is filled upto 0.15m and total height of tank is 0.32m. The length of the tank is given as 0.57m. I want to provide velocity in the form Acos(wt). The point at which this excitation is in the center of tank and on the free water surface. I am not getting how to give this kind of excitation in fluent. Pls help me in this regard.

[@zyg-r2n]

what if all the walls all solid wall instead of the top wall pressure outlet?

[@AnsysTutor]

It can be done similarly, only instead of pressure outlet change it to wall.

[@NitishKumar-bt2wx]

How can i write normal derivative of the velocity at the wall in a cylindrical tank like shown in your tutorial here?

[@NitishKumar-bt2wx]

This expression I want to write in Named Expression

[@gaming4life25]

why did we use patch option in the initialization part? It was not clear...

[@AnsysTutor]

Patching is done to define the material in the respective part of the geometry. Which we can not define in any other way.

[@NitishKumar-bt2wx]

How much time generally it takes to complete the solution?

[@AnsysTutor]

Arround 8-10 hours

[@emreaygoren1701]

Is this case validated?

[@AnsysTutor]

No, it's just a tutorial demonstration.

[@trinhduongquang9351]

What version of software do you use?

[@AnsysTutor]

Ansys 20 R1