CFD Explained: Learn the Basics & Resources

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Discussion Overview

The discussion revolves around the basics of Computational Fluid Dynamics (CFD), including its definition, applications, and resources for learning. Participants share links, personal experiences, and advice regarding the use of CFD software and hardware requirements.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant requests information and resources to learn about CFD.
  • Several links to introductory resources on CFD are provided, including a Wikipedia page and a dedicated CFD website.
  • Another participant questions the motivation behind wanting to learn something without understanding it first.
  • One participant expresses a desire to learn CFD due to its relevance in their upcoming postgraduate studies.
  • Concerns are raised about running CFD analyses on personal computers, with one participant warning that it could overwhelm RAM and processing power.
  • Another participant counters that the feasibility of running CFD on personal computers depends on the specific problem being solved, suggesting that smaller simulations can be handled on less powerful machines.
  • A participant shares their experience of running CFD programs on an older laptop, indicating that results can be obtained even with limited computing capacity.
  • There is a suggestion that using dedicated CFD software would be more efficient than running custom programs on personal computers.

Areas of Agreement / Disagreement

Participants express differing views on the capabilities of personal computers for running CFD analyses. While some caution against using home desktops for complex simulations, others assert that smaller problems can be effectively solved on standard machines. The discussion remains unresolved regarding the best practices for running CFD analyses.

Contextual Notes

Participants mention various factors that influence the performance of CFD analyses, such as the complexity of the model and the computational resources available. There is an acknowledgment of the limitations of personal computing hardware for certain types of simulations.

jonbonraki
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can u guys tell me what exactly is CFD and hit me with some usual stuff like links and videos so that i can get good at it..
thanks in advance
 
Engineering news on Phys.org
Why do you want to get good at something if you don't know what it is?
 
i love to get good at what i don't know,dats how i stay hunger

beside i think i m going to come across it in my post graduation
 
An Advice: Never run this CFD analysis at your home desktop. It would screw the hell out of your RAM and processor.In simple words, CFD is the use of computer to predict the flow and its properties in various situations. Those computers are mostly many core processors operating in parallel and their solvers run from day to several weeks to get results
 
FAlonso said:
An Advice: Never run this CFD analysis at your home desktop. It would screw the hell out of your RAM and processor.

In simple words, CFD is the use of computer to predict the flow and its properties in various situations. Those computers are mostly many core processors operating in parallel and their solvers run from day to several weeks to get results

Of course it all depends on what kind of model you're running, and how many simultaneous equations you eventually try to solve. It's perfectly fine to run CFD on any computer you see fit, but the size of the simulation you can solve will be limited by the amount of ram and hard drive space you have available.
 
In simple words, CFD is the use of computer to predict the flow and its properties in various situations. Those computers are mostly many core processors operating in parallel and their solvers run from day to several weeks to get results

That is simply not true. I've ran tests on my laptop. It really depends on the problem to be solved. Will you solve a multistage turbine on your desktop? No. Can you solve a 100k node problem? Sure.
 
I've written some programs in Fortran and QBasic that perform CFD analysis. I ran a program in uncompiled QBasic...it took a while to run but you can get results on a desktop or laptop. In my case it was an older laptop without much computing capacity at all. If memory serves me correctly, the output file consisted of a direction and magnitude given the length of the model we setup to run. We then plotted the data on a grid with a certain length and direction to represent what was going on.

If anybody wants scans of the program, I'd be happy to provide them.

Of course it would be quicker and easier just to run this on a real CFD software.
 

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