<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Fri, Apr 13, 2018 at 1:51 PM, Robert Walker <span dir="ltr"><<a href="mailto:rlwalker@usc.edu" target="_blank">rlwalker@usc.edu</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">Ok, let me rephrase that...something like way FEniCS (if i remember correctly) handles this ... between two values with a very small difference between them on each axis? Is there an example of something like that to use as a security blanket from which to expand?</div></blockquote><div><br></div><div>I would start with a Gaussian source at some point, and then push it toward the limit. That way you know</div><div>all the correct normalization, and its smooth.</div><div><br></div><div> Matt</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><span class="HOEnZb"><font color="#888888"><div>Robert</div></font></span></div><div class="gmail_extra"><span class=""><br clear="all"><div><div class="m_-5067456103744702799gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Robert L. Walker<br></div><div>MS Petroleum Engineering</div><div>Mork Family Department of Chemicals and Materials Sciences<br></div><div>University of Southern California<br>------------------------------<wbr>----------------<br></div><div>Mobile US: +1 (213) - 290 -7101<br></div><div>Mobile EU: +34 62 274 66 40<br></div><div><a href="mailto:rlwalker@usc.edu" target="_blank">rlwalker@usc.edu</a><br></div></div></div></div>
<br></span><div><div class="h5"><div class="gmail_quote">On Fri, Apr 13, 2018 at 10:46 AM, Matthew Knepley <span dir="ltr"><<a href="mailto:knepley@gmail.com" target="_blank">knepley@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 class="gmail_extra"><div class="gmail_quote"><span>On Fri, Apr 13, 2018 at 1:40 PM, Robert Walker <span dir="ltr"><<a href="mailto:rlwalker@usc.edu" target="_blank">rlwalker@usc.edu</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>Hello,</div><div><br></div><div>Is there an example of application of a point source in one of the tutorial PETScFE style examples? Ideally this would be some point on the interior, and not necessarily on a boundary.</div><div><br>Thanks, and apologies in advance if this is a stupid question,</div></div></blockquote><div><br></div></span><div>No, good question. You would have to decide what that meant in FEM terms. All the internal integrals are done</div><div>with quadrature. So putting the source at a quadrature point would work, although its a little difficult to know where</div><div>they will be. You could smooth it out a little, and check coordinates in the forcing function. Last, you could check</div><div>for a "close enough" quadrature point and put it there. I think making a slightly extended source is usually best.</div><div><br></div><div> Thanks,</div><div><br></div><div> Matt</div><span><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Robert </div><div><br></div><br clear="all"><div><div class="m_-5067456103744702799m_-3354304310618996497m_2490555387741070381gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Robert L. Walker<br></div><div>MS Petroleum Engineering</div><div>Mork Family Department of Chemicals and Materials Sciences<br></div><div>University of Southern California<br>------------------------------<wbr>----------------<br></div><div>Mobile US: +1 (213) - 290 -7101<br></div><div>Mobile EU: +34 62 274 66 40<br></div><div><a href="mailto:rlwalker@usc.edu" target="_blank">rlwalker@usc.edu</a><br></div></div></div></div>
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</blockquote></span></div><span class="m_-5067456103744702799HOEnZb"><font color="#888888"><br><br clear="all"><div><br></div>-- <br><div class="m_-5067456103744702799m_-3354304310618996497gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.caam.rice.edu_-7Emk51_&d=DwMFaQ&c=clK7kQUTWtAVEOVIgvi0NU5BOUHhpN0H8p7CSfnc_gI&r=BWOpUsAp5dvI5cUiP4uZxQ&m=NhwycEffStNWdPC1pT8qnGZOOnaReNM_T0V8yU1UKHE&s=qwCDj6rCWjIJ1T-NmL3j1bZCdrFx5cOVzTA-l0e0W0o&e=" target="_blank">https://www.cse.buffalo.edu/~k<wbr>nepley/</a><br></div></div></div></div></div>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>What most experimenters take for granted before they begin their experiments is infinitely more interesting than any results to which their experiments lead.<br>-- Norbert Wiener</div><div><br></div><div><a href="http://www.caam.rice.edu/~mk51/" target="_blank">https://www.cse.buffalo.edu/~knepley/</a><br></div></div></div></div></div>
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