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unstructured or structured mesh????????

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Old   March 13, 2011, 17:52
Default unstructured or structured mesh????????
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Morteza
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hi dear all
a question?
what is the different between structured and unstructured mesh to obtain good results in fluent?
for example? for a 3d impingement jet, what is the different between these two types? i want to obtain yplus=1 and good distribution for nusselt number
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Old   March 13, 2011, 22:00
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Raashid Baig
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Quote:
Originally Posted by morteza08 View Post
hi dear all
a question?
what is the different between structured and unstructured mesh to obtain good results in fluent?
for example? for a 3d impingement jet, what is the different between these two types? i want to obtain yplus=1 and good distribution for nusselt number
Hi Morteza,
It will be difficult to say which one is better, it depends on a lot of other factors like type of problem and the solver involved. But generally saying my experience says for problems like yours(internal flows) a carefully constructed structured mesh will surely give good results. If you are not in a hurry (since you can construct unstructured meshes more quickly) go for a fine structured mesh which should have even more fine elements near the jet.
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