Improve Your CFD Analysis With These Tips

While performing CFD analysis over the years, like most CFD practitioners, I've accumulated a set of tips and techniques I use again and again. On this page, I've gathered some of them together.

Hopefully, you will find something here you didn't know before. Even if you are already an experienced CFD user, at least these ideas can be a reminder to follow best practices.


The first tip is a reminder to accumulate and keep handy a set of simple test cases. You never know when you might need a good test case.

Knowing you need a good set of test cases is one thing. Finding them is another. Here are some further thoughts on finding and using CFD validation cases

Another thing to keep in mind is the possibility that your TVD limiter can have a broader impact on your solution than you might expect.

There are so many different turbulence models to choose from, it can be a bit overwhelming at times. Here is a brief turbulence model overview to help orient you.

Following up on the turbulence modeling overview, here are some things to consider when choosing a turbulence model for any given application.

Sometimes, when an initial simulation doesn't work out the way we want, it is possible to tweak various model settings to get better results. While that works sometimes, it is a risky thing to do, as this reacting flow example shows.

There are a lot of different computational mesh types, and a lot of related jargon. For a quick overview of the major grid types and their strengths and weaknesses, check out this primer on CFD grid types.

So many different numerical methods are used in CFD that it can be bewildering to try to keep up with it all. As a result, you may be tempted to ignore the subject entirely. That would be a mistake. On this page, I show an example of how your choice of computational fluid dynamics modeling approach can affect your results.

Next are some CFD tips of a different nature.

Are you interested in pursuing a career in computational fluid dynamics? Here are some thoughts on getting started in a CFD career.

Are you already a practicing CFD engineer? Ever thought about becoming a consultant? Here are some thoughts on CFD consulting

Sometimes a CFD code's performance is hugely affected by unexpected things. Here's an example from my own experience where I learned the hard way about how the version of MPI one uses can dramatically affect parallel performance

That's all the CFD analysis tips for now. Keep checking back, as I plan on adding more tips and tricks as time goes on. In the meantime, if you have a comment, correction, or tip of your own that you'd like to share,

contact me and let me know.

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