<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div></div><div><br><div><div>Le 24 oct. 2018 à 19:11, Octavio Castillo Reyes <<a href="mailto:ocastilloreyes@gmail.com">ocastilloreyes@gmail.com</a>> a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div>Dear Riad, <br></div><div><br></div><div>I'm trying to reproduce your strategy. Until now, I have the topography layer (see attached image). However, I'm having troubles to define and close the volume... Can you share with me your *.geo script? How do you merge the 2D surface with other flat surfaces in order to close the volume?</div><div><br></div><div>Thank you for your time and support. <br></div><div><br></div><div>best regards</div><div><br></div><div>O.<br></div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, Sep 25, 2018 at 2:42 PM Octavio Castillo Reyes <<a href="mailto:ocastilloreyes@gmail.com">ocastilloreyes@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Yes, thank you! <br></div><div><br></div><div><span id="m_3623828592157781865gmail-result_box" class="m_3623828592157781865gmail-" lang="en"><span>This will be very useful to me.</span> <span class="m_3623828592157781865gmail-">I will try to apply it to a real case and I will tell you</span></span></div><div><span id="m_3623828592157781865gmail-result_box" class="m_3623828592157781865gmail-" lang="en"><br></span></div><div><span id="m_3623828592157781865gmail-result_box" class="m_3623828592157781865gmail-" lang="en">Best regards</span></div><div><span id="m_3623828592157781865gmail-result_box" class="m_3623828592157781865gmail-" lang="en"><br></span></div><div><span id="m_3623828592157781865gmail-result_box" class="m_3623828592157781865gmail-" lang="en">O.<br></span></div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, Sep 25, 2018 at 1:04 PM Riad HASSANI <<a href="mailto:Riad.Hassani@unice.fr" target="_blank">Riad.Hassani@unice.fr</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Hi Octávio,<div><div><div>I'm not sure I understood your question correctly. </div><div>Is that the kind of thing you want to do? (if yes, the procedure works well):</div><div><img id="m_3623828592157781865m_-27978913469240914761D308D77-2F9E-4D7C-AE66-BC1093CF1071" height="422" width="766"></div><div>Best,</div><div>Riad</div><div><br></div><div>Le 21 sept. 2018 à 12:52, Octavio Castillo Reyes <<a href="mailto:ocastilloreyes@gmail.com" target="_blank">ocastilloreyes@gmail.com</a>> a écrit :</div><br class="m_3623828592157781865m_-2797891346924091476Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div dir="ltr"><div>Dear all, <br></div><div><br></div><div>I'm interested too. My domains are composed 3, 4 or 5 materials (maybe more) where each interface might include a topography. For instance, do you know if is possible include another layer to the model proposed by Riad Hassani?</div><div><br></div><div>Any idea?</div><div><br></div><div>Best regards</div><div><br></div><div>O.<br></div></div></div><br><div class="gmail_quote"><div dir="ltr">On Fri, Sep 21, 2018 at 12:37 PM Riad HASSANI <<a href="mailto:Riad.Hassani@unice.fr" target="_blank">Riad.Hassani@unice.fr</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word">Hi Stephanie,<div><div><div><br></div><div>the only trick I had found at the time is in three steps (there may be more direct solutions, if so, I'm interested!):</div><div><br></div><div>1) mesh only the "skin" of your domain (2D mesh), save it in a .msh file</div><div>2) move the nodes of the surface to match with your topography (use an external program that reads the .msh, interpolates the topography on the appropriate faces and rewrites your .msh).</div><div>3) in a .geo file, merge this new .msh, define the volume and then mesh it (3D mesh) (for example, if the initial domain has 6 faces : Merge "skin_modified.msh"; Surface Loop(1) = {1,2,3,4,5,6}; Volume(1)={1}; )</div><div><br></div><div>Best,</div><div><br></div><div>Riad</div><div><br></div><div><img id="m_3623828592157781865m_-2797891346924091476m_-6486986602777856275C58DD49C-FA1E-4C31-90C9-903DAC6B2088" height="575" width="733"></div><div><br></div><div>Le 21 sept. 2018 à 02:12, Stephanie Jarvis <<a href="mailto:Stephanie.Jarvis@colorado.edu" target="_blank">Stephanie.Jarvis@colorado.edu</a>> a écrit :</div><br class="m_3623828592157781865m_-2797891346924091476m_-6486986602777856275Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div>Hello,</div><div><br></div><div>Can gmsh can handle topography? I see this has been asked several times but I can't find a resolution. I have surveyed grid points from a hillslope surface that I need to create a 3D mesh for (top of the box is the hillslope topography, bottom is flat extending into the surface). I've tried embedding the points into a surface I create around them, using Point In Surface, but the points mesh as holes (if they're below that surface) or in the air by themselves (if they're above)--there is no interpolation between them. I've also tried several variations of lines and splines connecting the points, but I can't get that to mesh successfully. Plugin(Tetrahedralize) looks promising, but it's unclear to me how to use it--is it possible to get a "View" out of a bunch of points? Or do I need to create an interpolated surface outside of gmsh and bring that in to mesh?<br></div><div><br></div><div>Thank you!</div><div>Stephanie<br></div></div>
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