Hi Barry,<br><div class="gmail_quote">On Tue, Jan 26, 2010 at 6:08 PM, Barry Smith <span dir="ltr"><<a href="mailto:bsmith@mcs.anl.gov">bsmith@mcs.anl.gov</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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Typing "why use staggered grids?" into google gave me the first answer: <a href="http://www.cfd-online.com/Wiki/Staggered_grid" target="_blank">http://www.cfd-online.com/Wiki/Staggered_grid</a><br>
<br></blockquote><div><br>I did see that webpage and it is where I started.<br> </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Though a bit terse and far from complete it is more or less correct. As it states, coding a non-staggered grid is generally easier,<br>
<br></blockquote><div>Agreed.<br> </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
You can use or not use staggered grids for such problems but you should understand something about the issues before you do anything. This isn't really a question about PDEs but a question about PDE discretizations for which there is a huge literature. You should talk to a fluid dynamics person about your particular problem.<br>
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<br></font></blockquote><div><br><br>Agreed. Thank you very much for the suggestion. Sorry for this off-topic thread.<br><br>Yan<br><br> </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
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Barry</font><div><div></div><div class="h5"><br>
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On Jan 26, 2010, at 4:57 PM, Ryan Yan wrote:<br>
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Hi All,<br>
I am re-thinking my discretization of a problem: is the stagger grid only good for SIMPLE scheme?<br>
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I am wondering if I am using a stagger grid with FVM to discretize the conservation system(velocity, pressure, internal energy), is there any drawback of using newton's method to solve it, comparing with the SIMPLE scheme for which the staggered grid is suit for? I am not sure whether the question is asked properly, please feel free to ask more information if needed. Any comment is welcome.<br>
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Thanks a lot,<br>
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Yan<br>
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