<div dir="ltr"><div><div>Thanks Katie and Tubois for your response. <br></div>That clarifies my doubts. I am able to generate (although fairly coarse) mesh using boxes with annulus geometry for cylinder and merge them with rectangular mesh boxes. I am working on to get the desired mesh refinement. <br>
<br></div>Regards<br>Ravi<br><br><div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Mar 13, 2014 at 9:43 PM, Ravi Tumkur <span dir="ltr"><<a href="mailto:ravi.tumkur@gmail.com" target="_blank">ravi.tumkur@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Hi All,<br><br></div>We are trying to build a mesh to simulate external cylinder flow, similar to the one given in the example "ext_cyl". Searching though the documentation, we understand that it is possible to generate several boxes of mesh using genbox and combine using pretex to get the final mesh. <br>
<br></div><div>We are having difficulty in interpreting the boundary condition (BC) strings in the input to files to genbox. It is clear for a rectangular box, the BC string follows the order West, East, South, and North in 2D. What is the analogous interpretation for a circular annulus geometry? such as for the one defined by the box files given in "primer.pdf" (<a href="http://www.mcs.anl.gov/~fischer/primer.pdf" target="_blank">http://www.mcs.anl.gov/~fischer/primer.pdf</a>), which is repeated below:<br>
<br>x2d.rea<br>2 spatial dimension<br>1 number of fields<br>#<br># comments<br>#<br>#<br>#========================================================<br>#<br>Y cYlinder<br>3 -24 1 nelr,nel_theta,nelz<br>.5 .3 x0,y0 - center of cylinder<br>
ccbb descriptors: c-cyl, o-oct, b-box (1 character + space)<br>.5 .55 .7 .8 r0 r1 ... r_nelr<br>0 1 1 theta0/2pi theta1/2pi ratio<br>v ,W ,E ,E , bc’s (3 characters + comma)<br><br><br></div><div>
Does "v" corresponds to BC at r0 and W correspond to BC at r_nelr in r-direction and the two E's correspond to BC at theta0 and theta1? <br>
<br></div><div>Thanks in advance for your help.<br><br></div><div>Regards,<br>Ravi<span class="HOEnZb"><font color="#888888"><br></font></span></div><span class="HOEnZb"><font color="#888888"><div><br><br><br><br></div><div>
<br><br><br></div><div><div><div><br clear="all"><div><div><div><div><div><div><br>-- <br>Ravi Kumar T R<br>
<br>University of Illinois at Urbana-Champaign<br>ph : <a href="tel:%2B1%20217%20778%207538" value="+12177787538" target="_blank">+1 217 778 7538</a><br><a href="http://lndvl.mechse.illinois.edu/" target="_blank">http://lndvl.mechse.illinois.edu/</a>
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</blockquote></div><br><br clear="all"><br>-- <br>Ravi Kumar T R<br><br>University of Illinois at Urbana-Champaign<br>ph : +1 217 778 7538<br><a href="http://lndvl.mechse.illinois.edu/">http://lndvl.mechse.illinois.edu/</a>
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