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Old   December 18, 2007, 09:38
Default dynamic mesh reference
  #1
mateus
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Hi,

I'm writing a paper where I used Dynamic meshes. I have to make some reverence to a book or a paper but I can't really find something. Strangely also Fluend documentation doesn't have any references...

Please post some books or basic papers on these methods (dynamic mesh and mesh update techniques).

Thanks, Mateus
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Old   December 18, 2007, 10:34
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  #2
Patrick Godon
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Do you meant adaptive mesh ?
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Old   December 20, 2007, 14:03
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  #3
Giles
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J.T. Batina. Unsteady Euler airfoil solutions using unstructured dynamic meshes. AIAA Journal, 28(8):1381{1388, 1990.

J.T. Batina. Unsteady Euler algorithm with unstructured dynamic mesh for complex-aircraft aerodynamic analysis. AIAA Journal, 29(3):327{333, 1991.

F. J. Blom. Considerations on the spring analogy. International Journal for Numerical Methods in Fluids, 32:647{668, March 2000.

Dehong Zeng and C. Ross Ethier. A semi-torsional spring analogy model for updating unstructured meshes in 3d moving domains. Finite Elem. Anal. Des., 41(11-12):1118{1139, 2005.
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Old   December 21, 2007, 04:13
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Alberto
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I'have a question in these field. Which is the difference between adptive and dynamic mesh?I think that adaptive means that the grid is finer where the gradient of solution is larger,or it is wrong?and dynamic? Do you have some reference for a good algoritm of adaptive (i think)mesh.I need it for study the planimetric evolution of rivers(like meandering or braiding), so I need to change the mesh with the new position of river.I work with finite volume method? thank so much Alberto
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Old   December 21, 2007, 05:56
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ganesh.cfd@gmail.com
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Dear Alberto,

A dynamic mesh is one that changes with time. It is adaptive in the sense that it follows and hence "adapts" to the moving features. On the other hand, adaptive mesh refers to a mesh wherein selective areas where the flow features are more are resolved better, using some suitable strategy. For unsteady flows, you may possibly use them interchangeably. However, for simple problems such as store separation etc.. when there arises a need to regenerate the mesh or mesh movement using some strategies such as spring analogy, we refer to the it as dynamic meshes. Dynamic adaptive meshes are ones wherein the mesh is adjusted to the motion of the body and wherin high resolution of the flow features are provided by clustering the nodes/dividing the cells or both.

Hope this helps

Regards,

Ganesh

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Old   December 21, 2007, 12:13
Default Re: dynamic mesh reference
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Alberto
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Thanks!do you have some good reference for my problem?2D shallow waters models o similar?thanks so much
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