Відео

glad you liked it but lost a lot of physicalness due to domain size and it's simplifications.the source body is complex and i am planning to see how much i get close to reality for in-house type cfd.that's the beauty of these tools.finding a optimum solution,cost effective,time effective and accuracy with your capabilities.

@@AlperCemYlmaz yes, and finding the right mesh resolution is always tricky xD

this has nothing to do with the code itself.of course it is(the case) far away from industrial quality work but not type of colorful fluid dynamics.i dont think people in industry use buoyancy driven solver with source terms to solve heat sink case.

@@AlperCemYlmaz i've been testing few of these open source shits... kind of wasting time... all of them was so much far away of proper results...😅

@@AlperCemYlmaz Mjento zawsze zastafjali na ój to ktuś marnuje sfuj i czyjź Czos na produkcję takiego guffna...😅

* PAINT advance dynamic

@@jakubsobka2621 yes i agree with you to an extend.most of the complex numerical simulations are inaccurate.it is not kind of a job that undergrad boy with a 7 years of laptop like me can handle.it really needs sophistication and dedication for years.so knowledge of engineer is crucial for results. i know there are plenty of potato open-source projects but codes like su2 and openfoam are really serious tools that widely used in both industry and academia.

yeah dude turn it around.

the case is already deleted but beta2 is 90 degree obviously for alpha2 if you assume 0.15m of radius and w2 around 30m/s that makes alpha 2 angle 75 80 degree

if you are dealing with patches you could integrate over a patch in Paraview. Try Extract Block,select your patch and then integrate variables.

@@AlperCemYlmaz I agree thanks for your answer but i really want to start from the code because i will learn more about coding? so knowing how to code this normal vector on the patch will really help....and I think it will be a big plus for the advance of my project...

@@ulrichbenash2338 I will suggest you to check API guide.There are many functionObjects you can search for.Find your need then delve into source code. This code was developed over many years by the smartest and hardest working people in the world. The code is open source and we have the opportunity to access the knowledge of these people. My suggestion is to examine the code and think of things to add to it instead of starting from scratch. I think this is what learning is like. use "foamGetDict" command to get your specific functionObject and then add that function to your controlDict file. Here is the link. www.openfoam.com/documentation/guides/v2206/api/group__grpFunctionObjects.html

yes it is.vortex blockages prevent hot air to move downwards.i will try to post a case similar to general usage air fryers this week.this is just a test case.and the streamline demonstration made this occlusion event obvious.

that's cool! @@AlperCemYlmaz

It comes unphysical to me either. My intention was simulating on glass surface and i was too obsessed with contact angles.But couldn't figure out how to simulate in glass surface.I think contact angles and that droplet movement correlated somehow.I did a test case on dynamic contact angles, you can check if you would like to. Reasons come to my mind: 1-It moves because i couldn't manage to resolve contact angles. 2-I did not specify any surface tension effects between solid(bottom) and droplet.And i don't know how. 3-The kinetic energy transfer by bottom heat. 4-writeInterval.This one has 0.01 and the contact angle test case has 0.005.They both have heat transfer from the bottom and altough the test case drops from some height the movement seems smaller. I should do some test cases in order to find the reality.Thanks for your attention.

I got my coarser mesh and still investigating the case. Firstly that droplet smearing effect comes when i switch to 2nd order accurate time scheme.After i turn that into backward Euler the smearing effect disappears. Still i could not figure out the movement. As i see it does not source from numerical schemes and contact angles or temperature field.I also add eddy viscosity into laminar case to implement roughness wall function. Sometimes those kind of physical problems become challenging.

@@AlperCemYlmaz Thank you for your reply to my question. I don't find out the reason but I have an idea. I think the surface tension difference due to the curvature difference is one of the reasons of this movement. So, I recommend you to check the case of the plane interface like free surface on the cup with evaporation. I hope you to get the good results in this challenging area.

@@ucyu7002Yes,I agree. Net cohesive forces between air-liquid and adhesive forces between liquid-solid are contributing to define contact angle. In this case the droplet is not surrounded by walls and it has just a bottom contact with solid surfaces.I think the problem arises here because hence there are no surrounding force contributers,the force balance collapse and droplet pretends unphysically.I also tested in capillary case(surrounded by walls) and contact angles work fine.I went for define lateral force contributers explicitly but seems like openfoam just allows me to define surface tension value between phases.Solid ground is not a phase.Of course there should be a solution and going to investigate. The balance i mentioned: en.wikipedia.org/wiki/Surface_tension#/media/File:SurfTensionContactAngle.png Thank you for contribution by the way you really pushed me to do some work in this case.If you wouldn't ask, the test case would remain the same.

@@ucyu7002 The Incorrect behavior was stemming from multiphase solver.I switched it to twoPhase solver then it fixed.

Merhaba.Geç yanıt için üzgünüm buraya sadece video atmak için giriyorum. Salome ile ilgili özel bir planım yok.Düşük hesaplama maliyetli boru içi akış case'leri yapmam gerekti ve Salome'da biraz uğraştım.Bunu da insanların işine yarar diye paylaşmak istedim. Salome veya openfoam ile ilgili bir sorunuz varsa elimden geldiğince yardımcı olmaya çalışırım.Sorularınız için mail atabilirsiniz.Hakkında kısmında mail adresim bulunmakta.

by using "stream tracer".also i made them thicker using "tube" property. you can also add glyphs to enhance visualization by using arrows.since it is wall-bounded flow you should reduce opacity.

@@AlperCemYlmaz nice, thank you, ill try StreamTracer 🙂