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online cfd

  • 04-06-2010 9:04pm
    #1
    CatFromHue
    Moderators, Science, Health & Environment Moderators Posts: 18,269 Mod ✭✭✭✭


    hi

    i was wondering if anyone had any experience of taking classes in cfd.

    i never did it in college and kinda wished i had. i was thinking of trying some of the cfd classes shown in the link below from ansys

    http://www.ansys.com/services/ts-schedules-hq-sort.asp?LOCATION_ID=32

    has anyone any experience of these?

    or would know of any night classes in dublin where i could take it?


Comments

  • #2
    judas101
    Closed Accounts Posts: 1,581 ✭✭✭judas101


    12,900 dollars for an ANSYS course?

    If you want to learn that get I reckon you could get one on one tutorials for way less which would bring you up to speed. I'm sure there's lots of unemployed CFD experts around Dublin who would be more than keen to tutor you.

    You wont get a formal qualification from this method but its probably the most effectice and cheapest.

    Whats the big appeal to CFD? I dont think there are lots of jobs in this field.

    Also, there is more to CFD than just ANSYS, you will need to know the fundamentals to understand the theory behind the subject. Governing equations, discretisation, turbulence modelling, flow charachteristics ect.

    ANSYS would traditionally be explored after an understanding of the fundamentals was had. Probelms may be solved using VBA code in excel providing knowledge of the governing equations is known.

    I'd like to hear some of the more experienced opinions on this and perhaps I can offer more insight.


  • #3
    CatFromHue
    Moderators, Science, Health & Environment Moderators Posts: 18,269 Mod ✭✭✭✭CatFromHue


    well i wasnt going to do all the courses

    i might just get a book on cfd from the library to see what its all about

    i wouldnt be looking to become an expert just really to get a basic grasp of it, similar to what someone who studied it in uni would have got

    workwise there is no real reason for me to do this, its more id just like to ad another string to my bow if that dream job ever came up.


  • #4
    chris85
    Registered Users, Registered Users 2 Posts: 4,502 ✭✭✭chris85


    ansys is great but the licence for a copy of the program is big money from what i remember in college, into the tens of thousands for a small number of liceneces.

    you need a fundamental understanding of fluid dynamics and ideally an advanced knowledge of it. knowing how to determine boundary conditions and so forth.

    I would not be advanced in it but have some understanding of it from college. Great program but really only as good as the details you input into it which take a lot of consideration to do. Its very complex... VERY!!!


  • #5
    judas101
    Closed Accounts Posts: 1,581 ✭✭✭judas101


    Chris is right. I too would only advise exploring ANSYS after gaining knowledge of fundamental CFD principles.


  • #6
    CatFromHue
    Moderators, Science, Health & Environment Moderators Posts: 18,269 Mod ✭✭✭✭CatFromHue


    ok so thanks lads

    i might just get the book out of the library and see how i go with that first

    i have or at least i had a good grasp of aerodynamics and boundary layer theory in college so hopefully they'll help somewhat


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  • #7
    enda1
    Registered Users, Registered Users 2 Posts: 5,166 ✭✭✭enda1


    Check this out OP.

    There's some serious progress going on in this field at the moment.


  • #8
    Turbulent Bill
    Registered Users, Registered Users 2 Posts: 1,639 ✭✭✭Turbulent Bill


    chris85 wrote: »
    ansys is great but the licence for a copy of the program is big money from what i remember in college, into the tens of thousands for a small number of liceneces.

    you need a fundamental understanding of fluid dynamics and ideally an advanced knowledge of it. knowing how to determine boundary conditions and so forth.

    I would not be advanced in it but have some understanding of it from college. Great program but really only as good as the details you input into it which take a lot of consideration to do. Its very complex... VERY!!!

    I'd echo this, you need a good understanding of fluid dynamics before going near CFD, in the same way that you need to know solid mechanics for FEA. I'm not familiar with ANSYS CFD, but the solid mechanics functions had excellent verification examples in the help files which allowed you to compare the numerical solution produced by ANSYS to textbook solutions of classical problems. This was great for checking boundary conditions etc. as well as final results.

    Modern numerical solvers are extremely powerful and flexible, so they can find a solution for almost any problem. The downside is that they can arrive at solutions even for wrongly-defined boundary conditions, loads etc. which look reasonable but can be totally wrong. You really need to start simple, verify and then gradually add complexity.


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