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<div class="">Dear Guillaume, </div>
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<div class="">The answer is no, the formulation that computes the boundary condition is not called per time step, only once. AssignedFromResolution and TransferSolution where thought for doing just one computation (often expensive) to be reused further. </div>
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<div class="">I think about another way of doing what you want…</div>
<div class="">Maybe the simplest way to go is just imposing it as an additional term in your formulation:</div>
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<div class="">Galerkin { [ -ExtField[] , {h} ] ;</div>
<div class=""> In Infinity ;</div>
<div class=""> Jacobian SurfaceJacobian ;</div>
<div class=""> Integration SimpleIntegration ; }</div>
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<div class=""> </div>
<div class="">and then you remove the constraint. That’s what we do in high frequency for the boundary conditions at infinity. </div>
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<div class="">Have a look, e.g. at the dipole case with Microwave.pro.</div>
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<div class="">Galerkin { DtDof [ Sqrt[epsilon[]*nu[]] * ( Normal[] /\ Dof{e} ) /\ Normal[] , {e} ];</div>
<div class=""> In SigmaInf; Integration I1; Jacobian JSur; }</div>
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<div class="">If that does not work, then try to use a formulation that you call very time in your loop with a projection in between.</div>
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<div class="">Best regards, </div>
<div class="">Ruth</div>
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—<br class="">
Prof. Ruth V. Sabariego<br class="">
KU Leuven <br class="">
Dept. Electrical Engineering ESAT/Electa, EnergyVille<br class="">
<a href="http://www.esat.kuleuven.be/electa" class="">http://www.esat.kuleuven.be/electa</a></div>
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<a href="http://www.energyville.be" class="">http://www.energyville.be</a></div>
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Free software: <a href="http://gmsh.info" class="">http://gmsh.info</a> | <a href="http://getdp.info" class="">http://getdp.info</a> | <a href="http://onelab.info" class="">http://onelab.info</a><br class="">
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<blockquote type="cite" class="">
<div class="">On 8 Feb 2018, at 16:32, DILASSER Guillaume <<a href="mailto:Guillaume.DILASSER@cea.fr" class="">Guillaume.DILASSER@cea.fr</a>> wrote:</div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">Dear Ruth,<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">Thank you for the quick answer, I completely missed the Group definition… To me it was obvious that,<span class="Apple-converted-space"> </span><i class="">Phi</i><span class="Apple-converted-space"> </span>being
defined on the whole<span class="Apple-converted-space"> </span><i class="">Domain</i><span class="Apple-converted-space"> </span>and<span class="Apple-converted-space"> </span><i class="">Infinity</i><span class="Apple-converted-space"> </span>being a subset
of it,<span class="Apple-converted-space"> </span><i class="">Phi</i><span class="Apple-converted-space"> </span>was also automatically defined on<span class="Apple-converted-space"> </span><i class="">Infinity</i>… I will now know that it is not the case.<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">Can I ask you another question ? I have noticed that dipole.pro and mstrip.pro are static problems, mine on the other hand is a dynamic one solved
in the time domain. Therefore, I was wondering if the pre-resolution giving the boundary conditions will be called at each time step automatically or if I need to call it myself from the Resolution block. I do not think that there is an example for that in
the demos are benchmarks…<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">Thank you again for your help,<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">Yours faithfully,<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class="">
<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class="">Guillaume Dilasser<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125);" class=""><o:p class=""> </o:p></span></div>
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<b class=""><span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">De :</span></b><span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><span class="Apple-converted-space"> </span>Ruth Vazquez
Sabariego [<a href="mailto:ruth.sabariego@kuleuven.be" class="">mailto:ruth.sabariego@kuleuven.be</a>]<span class="Apple-converted-space"> </span><br class="">
<b class="">Envoyé :</b><span class="Apple-converted-space"> </span>jeudi 8 février 2018 15:49<br class="">
<b class="">À :</b><span class="Apple-converted-space"> </span>DILASSER Guillaume <<a href="mailto:Guillaume.DILASSER@cea.fr" class="">Guillaume.DILASSER@cea.fr</a>><br class="">
<b class="">Cc :</b><span class="Apple-converted-space"> </span><a href="mailto:getdp@onelab.info" class="">getdp@onelab.info</a><br class="">
<b class="">Objet :</b><span class="Apple-converted-space"> </span>Re: [Getdp] Issue with constraint from pre-resolution<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""><o:p class=""> </o:p></span></div>
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<span lang="EN-GB" class="">Dear Guillaume, <o:p class=""></o:p></span></div>
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<span lang="EN-GB" class="">You need to include the ‘Infinity’ surface in the support of your basis function:<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> <o:p class=""></o:p></span></div>
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<span lang="EN-GB" class="">{ Name Hrot_Hphi_3D ; Type Form1 ;<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> BasisFunction {<o:p class=""></o:p></span></div>
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<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class="">
<span lang="EN-GB" class=""> { Name sn ; NameOfCoef phi ; Function BF_GradNode ;<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> Support Region[{Domain, Infinity}] ; Entity NodesOf[ DomainCC ] ; }<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> { Name se ; NameOfCoef he ; Function BF_Edge ;<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> Support DomainC ; Entity EdgesOf[ All , Not BndDomainC ]; }<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> }<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> Constraint {<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> { NameOfCoef phi ;<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> EntityType NodesOf ;<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> NameOfConstraint ExtField ; }<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> }<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""> }<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class="">Otherwise, it does not find the degrees of freedom as the research is done starting with that Support region. <o:p class=""></o:p></span></div>
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<span lang="EN-GB" class="">If I do that I get<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : System 1/1: 60 Dofs <o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : Generate[SystemBoundaryConditions]<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : Solve[SystemBoundaryConditions] <o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : N: 60 - preonly lu mumps<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : TransferSolution[SystemBoundaryConditions]<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif; color: rgb(82, 48, 225);" class="">E n d P r e - R e s o l u t i o n (1/1)<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : (Wall = 1.29631s, CPU = 0.027512s, Mem = 9.85547Mb)<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif; color: rgb(82, 48, 225);" class="">E n d P r e - P r o c e s s i n g<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif; color: rgb(82, 48, 225);" class="">P r o c e s s i n g . . .<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : CreateDir[Results]<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : InitSolution[SystemMagnetics]<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : TimeLoopTheta ...<o:p class=""></o:p></span></div>
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<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class="">
<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : Theta Time = 1e-06 s (TimeStep 1, DTime 1e-06)<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : GenerateJac[SystemMagnetics]<o:p class=""></o:p></span></div>
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<div style="margin: 0cm 0cm 0.0001pt; font-size: 12pt; font-family: "Times New Roman", serif;" class="">
<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : SolveJac[SystemMagnetics] <o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : N: 1348 - preonly lu mumps<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : 0 Nonlinear Residual norm 0.000000000000e+00<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class="">Info : GetResidual[SystemMagnetics] <o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 9pt; font-family: Helvetica, sans-serif;" class="">that does not converge, but at least the BC are there</span><span lang="EN-GB" class="">…<o:p class=""></o:p></span></div>
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</span><span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 9pt; font-family: Helvetica, sans-serif;" class="">HTH,</span><span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 9pt; font-family: Helvetica, sans-serif;" class="">Ruth</span><span lang="EN-GB" style="font-size: 7.5pt; font-family: Monaco, serif;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="" class="">—<br class="">
Prof. Ruth V. Sabariego<br class="">
KU Leuven <br class="">
Dept. Electrical Engineering ESAT/Electa, EnergyVille<br class="">
</span><a href="http://www.esat.kuleuven.be/electa" style="color: purple; text-decoration: underline;" class=""><span lang="EN-GB" class="">http://www.esat.kuleuven.be/electa</span></a><span lang="EN-GB" style="" class=""><o:p class=""></o:p></span></div>
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<a href="http://www.energyville.be/" style="color: purple; text-decoration: underline;" class=""><span lang="EN-GB" class="">http://www.energyville.be</span></a><span lang="EN-GB" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="" class="">Free software: </span><a href="http://gmsh.info/" style="color: purple; text-decoration: underline;" class=""><span lang="EN-GB" class="">http://gmsh.info</span></a><span lang="EN-GB" style="" class=""> | </span><a href="http://getdp.info/" style="color: purple; text-decoration: underline;" class=""><span lang="EN-GB" class="">http://getdp.info</span></a><span lang="EN-GB" style="" class=""> | </span><a href="http://onelab.info/" style="color: purple; text-decoration: underline;" class=""><span lang="EN-GB" class="">http://onelab.info</span></a><span lang="EN-GB" style="" class=""><br class="">
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<span lang="EN-GB" class="">On 8 Feb 2018, at 15:23, DILASSER Guillaume <</span><a href="mailto:Guillaume.DILASSER@cea.fr" style="color: purple; text-decoration: underline;" class=""><span lang="EN-GB" class="">Guillaume.DILASSER@cea.fr</span></a><span lang="EN-GB" class="">>
wrote:<o:p class=""></o:p></span></div>
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<span lang="EN-GB" class=""><o:p class=""> </o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">Dear GetDP user,<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">I am writing to call for some help concerning the constraints of type<span class="apple-converted-space"> </span><i class="">AssignFromResolution</i>.<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">I am using an H-Phi magnetodynamic model and I would like to control the field on the outer boundaries of the modelling domain to match a specific time-dependant profile.
Because the external field I want to apply is too complex for the usual<span class="apple-converted-space"> </span><i class="">Assign</i><span class="apple-converted-space"> </span>type of constraint (it is the sum of two functions with different time dependences),
I have been trying to use<span class="apple-converted-space"> </span><i class="">AssignFromResolution</i>. My current model (not working) is attached with this email. The issue is, during pre-processing, I get the following warning about the system for the
pre-resolution, with is apparently empty :<o:p class=""></o:p></span></p>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Consolas;" class="">Info : Generate[SystemBoundaryConditions]</span><span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Consolas;" class="">Warning : Generated system is of dimension zero</span><span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Consolas;" class="">Info : Solve[SystemBoundaryConditions]</span><span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Consolas;" class="">Warning : Zero-size system: skipping solve!</span><span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">Unfortunately, I do not understand where those errors come from... I have tried to identify the problem by comparing my code with the benchmark examples antennas/dipole.pro
and antennas/mstrip.pro that also use<span class="apple-converted-space"> </span><i class="">AssignFromResolution</i><span class="apple-converted-space"> </span>constraints but I can’t seem to find it… Thank you in advance for your help !<o:p class=""></o:p></span></p>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class="">Yours faithfully,<o:p class=""></o:p></span></div>
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<span lang="EN-GB" style="font-size: 11pt; font-family: Tahoma, sans-serif; color: rgb(0, 0, 153);" class="">Guillaume DILASSER</span><span lang="EN-GB" style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span style="font-size: 7.5pt; font-family: Arial, sans-serif; color: rgb(0, 0, 153);" class="">Ingénieur de recherche / Research engineer</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span style="font-size: 7.5pt; font-family: Arial, sans-serif; color: rgb(0, 0, 153);" class=""> </span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span style="font-size: 7.5pt; font-family: Arial, sans-serif; color: rgb(0, 0, 153);" class="">CEA Saclay</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span style="font-size: 7.5pt; font-family: Arial, sans-serif; color: rgb(0, 0, 153);" class="">Bât.123 – P. 213c</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span style="font-size: 7.5pt; font-family: Arial, sans-serif; color: rgb(0, 0, 153);" class="">Point courrier n°11</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span style="font-size: 7.5pt; font-family: Arial, sans-serif; color: rgb(0, 0, 153);" class="">91191 Gif-sur-Yvette Cedex</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span style="font-size: 7.5pt; font-family: Arial, sans-serif; color: rgb(0, 0, 153);" class="">France</span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span style="font-size: 7.5pt; font-family: Arial, sans-serif; color: rgb(0, 0, 153);" class=""> </span><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<a href="mailto:guillaume.dilasser@cea.fr" style="color: purple; text-decoration: underline;" class=""><span style="font-size: 7.5pt; font-family: Arial, sans-serif;" class="">guillaume.dilasser@cea.fr</span></a><span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""><o:p class=""></o:p></span></div>
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<span style="font-size: 11pt; font-family: Calibri, sans-serif;" class=""> <o:p class=""></o:p></span></div>
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<Vortex_shaking_Fazilleau_1_display.geo><Vortex_shaking_Fazilleau_1_geometry.geo><Vortex_shaking_Fazilleau_1_model.pro><Vortex_shaking_Fazilleau_1_parameters.geo><span style="font-size: 9pt; font-family: Helvetica, sans-serif;" class="">_______________________________________________<br class="">
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