Learning Forum

[karthikeyan506]

Hi, I like to simulate corrosion in Ansys for composite materials . Is there any add on available for it? or it there any codes in apl for them

 

 

 

[PSiedlac123]

What effects of corrosion You would like to analyze? Mechanical weakening, Damage, Diffusion, Chemical or Electrochemical product forming ... I suppose most of these chemical /CFD problems can be solved with ANSYS Fluent, and mechanical part with ANSYS APDL.

Here You can start with some reading:  https://support.ansys.com/staticassets/ANSYS/Conference/Houston/downloads/Numerical%20Simulation%20of%20Flow%20Induced%20Corrosion%20-%20SW%20Research.pdf

 

[Shamkhal Mammadov]

The link is not working, can you please share it again?

[Rob]

It looks like a backend update broke some of the older links. Are any of these what you're after?  https://www.ansys.com/search#q=corrosion&t=AllAnsysTab&sort=relevancy  

[karthikeyan506]

Hi, I would like to do everything related to corrosion. DO you have anys simulations with you related to corrosion and can you possibly share with me.  

 

[Rob]

You need to be more specific, and figure out what you need (and can afford to do given time and software & hardware constraints) before trying to model anything. Ie are you worried about FeO, FeO3, FeS etc, is the oxide stable, does it alter the surface or risk "blowing" composite material. 

[karthikeyan506]

Hi,

I am trying to do oxidation on composite materials. I just need to determine thermal stresses, analysis of interlaminar stress. Do you recommend any softwares. I have access to ANSYS. I need to verify the surface topography and corrosion on coated surfaces of composites. Do you have some files which you have studied.

 

 

 

[Shamkhal Mammadov]

Hi, I am starting to work on CO2 corrosion in Ansys, is there anything you can recommend me to read?

[Shamkhal Mammadov]

How do you exactly od that? could you p[lease share with your UDF files or some other files?

[Rob]

As with my questions to the OP. Are you looking at the cause, effect, speed etc? 

[Shamkhal Mammadov]

Yes, we are doing research at the university, and I am trying to model the CO2 corrosion that happens inside the pipe. I need help plotting the corrosion rate (speed). I will try to determine it based on simulations with different percentages of H20 (and etc.) added to the stream. Could you please help me with it ? I will be very happy if we can have a short teems meeting where I can ask a couple of questions.

[Rob]

No Teams, we need to work via the Community. 

The reaction rate will be a function of "stuff", and that is something you'll need to define. The solver will then work out the flow parts (speed, concentration, temperature etc) to return a reaction rate for those conditions. 

[Shamkhal Mammadov]

do I need to write a UDF to be able to visualize the corrosion process and obtain rates?  I will try to post details and pictures of what I am trying to do.

Thanks for helping

[Rob]

Pictures are good! :)  

You shouldn't need a UDF, between the standard chemistry, electrochemistry (which I may need to read up on) and corrosion models (which I also need to read up on) you're aiming to supply the data for a range of known values and then let the solver work out what happens for whatever your model is doing. It's not an easy topic as you need to look at surface chemisty plus how the new surface reacts: ie rust breaks down exposing fresh iron to further corrode but aluminium oxide is stable and slows/prevents further problems. Aluminium chloride isn't stable which is why alloy wheels and road salt don't always go together well! 

[Kariuki Karanja]

hello. I want to perform wear and corrosion analysis on ansys. The analysis is to be done on a metal matrix composite. How do I go about it?

[Rob]

I'd start by working out what physics you want/need and then post a new Topic in /forum/forums/forum/installation-and-licensing/ansys-products/ explaining exactly what you need from the model(s).   CFD can handle some of the corrosion chemistry but you may need Mechanical for wear (I don't know re Mech). 

[Kariuki Karanja]

I appreciate your reply. Are there tutorials from ANSYS on performing such simulations.

 

[Rob]

Please refer to my previous comment.