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Old   February 15, 2011, 18:24
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Brianne
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What are some good reference(s) to self learn CFD and different gridding techniques? I am formally from an experimental background. I will be working on external flows like missiles, rockets, and airplanes over entire flight regime (subsonic,transonic,supersonic, and hypersonic).

My manager suggested "Numerical Computation of Interal and External Flows" by Hirsch. Are there any others you would suggest?
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Old   February 15, 2011, 20:11
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Hirsch's books are thorough, but can be terse. For a beginner, I recommend the set of books by Klaus Hoffman, et. al., which can be found at www.eesbooks.com. Anderson, Tannehill, and Pletcher is also a good basic reference (make sure you get the latest edition). ATP can be found on amazon.com.
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Old   February 16, 2011, 14:07
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Sounds like you are also looking for best practices for CFD. I don't know of a good reference. I've seen some recommend ERCOFTAC Best Practice Guidelines. I've never read it, so can't say much about it. You can also dig through AIAA papers. If you are close to a university you may be able get access to the papers for free or maybe your company has access to it. Unfortunately, in general, people publish what works and not what doesn't. A lot of the things which don't work or behave badly is passed along by word of mouth. I'd also suggest that you experiment. Grid up a NACA 0012 airfoil and see what happens if you try different boundary conditions or what happens as you move the far field boundary further away. And see how separation is predicted if you run laminar or turbulent (RANS). If you run RANS, see how the solution behaves if you limit the eddy viscosity to a maximum level. Try different code settings. Then, come up with other geometries. And keep the geometries simple, 2D or axisymmetric. Don't worry, you'll be able to break CFD even on those cases. In fact, make it a challenge. What can be done to break CFD? Then ask yourself, why did it break?

For example, here is a fun one. The separation of flow from a blunt cone cylinder at transonic speeds. It is possible to get two different converged steady state answers depending on how one converges the solution.

http://www.hegedusaero.com/examples/...eShoulder.html
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Old   February 17, 2011, 11:48
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Brianne
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Thank you for your assistance.
I had the books ordered and I will work through your suggestion of an airfoil with different boundary conditions.
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Old   February 17, 2011, 16:32
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Quote:
Originally Posted by agd View Post
Hirsch's books are thorough, but can be terse. For a beginner, I recommend the set of books by Klaus Hoffman, et. al., which can be found at www.eesbooks.com. Anderson, Tannehill, and Pletcher is also a good basic reference (make sure you get the latest edition). ATP can be found on amazon.com.
The book by Klaus Hoffman, I used the first edition of the book, excellent introduction to the finite difference methods, comparable in clarity to professor's Michael Leschziner class notes but when the finite volume technique became the standard, I used the book by Blazek, I do not know if the current edition of Klaus Hoffman book deals with this finite volume or not, I wish to read a comment on the current edition, thanks
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