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<div class="">The easiest way is to use global quantities.</div>
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<div class="">You can use the following Function space:</div>
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<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""><br class="">
</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class="">FunctionSpace {</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name Hgrad_vf_Ele ; Type Form0 ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> BasisFunction {</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> // v = v s + v s</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> // n n c,k c,k</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name sn ; NameOfCoef vn ; Function BF_Node ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> Support DomainCC_Ele ; Entity NodesOf[ All, Not SkinDomainC_Ele ] ; }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name sck ;NameOfCoef vck ; Function BF_GroupOfNodes ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> Support DomainCC_Ele ; Entity GroupsOfNodesOf[ SkinDomainC_Ele ] ; }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> GlobalQuantity {</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name GlobalElectricPotential ; Type AliasOf ; NameOfCoef vck ; }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name GlobalElectricCharge ; Type AssociatedWith ; NameOfCoef vck ; }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""> Constraint {</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""> { NameOfCoef vn ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> EntityType NodesOf ; NameOfConstraint ElectricScalarPotential ; }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco; min-height: 14px;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class="">
</div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { NameOfCoef GlobalElectricPotential ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> EntityType GroupsOfNodesOf ; NameOfConstraint GlobalElectricPotential ; }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { NameOfCoef GlobalElectricCharge ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> EntityType GroupsOfNodesOf ; NameOfConstraint GlobalElectricCharge ; }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">}</span></div>
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</span></div>
<div class="">then formulation</div>
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<span style="font-variant-ligatures: no-common-ligatures" class="">Formulation {</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name Electrostatics_vf ; Type FemEquation ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> Quantity {</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name v ; Type Local ; NameOfSpace Hgrad_vf_Ele ; }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name Q ; Type Global ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> NameOfSpace Hgrad_vf_Ele [GlobalElectricCharge] ; }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name V ; Type Global ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> NameOfSpace Hgrad_vf_Ele [GlobalElectricPotential] ; }</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""> Equation {</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""> Galerkin { [ epsr[] * Dof{d v} , {d v} ] ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> In DomainCC_Ele ;</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""> Jacobian Vol ; Integration GradGrad ; }</span></div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""></span><br class="">
</div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> GlobalTerm { [ -Dof{Q}/eps0 / Length , {V} ] ; In SkinDomainC_Ele ; }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class="">}</span></div>
</div>
<div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class="">
</span></div>
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</div>
<div class="">and the post-processing gives you directly the capacity:</div>
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<span style="font-variant-ligatures: no-common-ligatures" class=""><br class="">
</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class="">PostProcessing {</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name EleSta_vf ; NameOfFormulation Electrostatics_vf ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> PostQuantity {</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name v ; Value { Term { [ {v} ] ; Jacobian Vol; In DomainCC_Ele ; } } }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name e ; Value { Term { [ -{d v} ] ; Jacobian Vol; In DomainCC_Ele ; } } }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name d ; Value { Term { [ -eps0*epsr[] * {d v} ] ; Jacobian Vol; In DomainCC_Ele ; } } }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name em ; Value { Term { [ Norm[{d v}] / 1.e6 ] ; Jacobian Vol; In DomainCC_Ele ; } } } // Warning: in kV/mm</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name Q ; Value { Term { [ {Q} ] ; In SkinDomainC_Ele ; } } }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name V ; Value { Term { [ {V} / 1.e3 ] ; In SkinDomainC_Ele ; } } } // Warning: in kV</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name C ; Value { Term { [ {Q}/{V} ] ; In SkinDomainC_Ele ; } } }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class="">}</span></div>
</div>
<div class=""><span style="font-variant-ligatures: no-common-ligatures" class=""><br class="">
</span></div>
<div class="">with domains:</div>
<div class="">
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class="">Domain_Ele Whole electric domain</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class="">DomainCC_Ele Nonconducting regions</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class="">DomainC_Ele Conducting regions (not used)</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class="">SkinDomainC_Ele Skin of conducting regions (surfaces)</span></div>
</div>
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</div>
<div class=""><br class="">
</div>
<div class="">The other possibility is forgetting about the global quantities and define an integral quantity in the postprocessing.</div>
<div class="">
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> { Name Cpos ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> Value {</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> Integral { Type Global ;</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> [ epsilon[] * SquNorm[-{d v}] ] ; In DomainCC_Ele ; Jacobian Vol ; Integration I1 ; }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div>
<div style="margin: 0px; font-size: 10px; line-height: normal; font-family: Monaco;" class="">
<span style="font-variant-ligatures: no-common-ligatures" class=""> }</span></div>
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div class="">HTH,</div>
<div class="">Ruth</div>
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</div>
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<div style="color: rgb(0, 0, 0); letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; orphans: auto; text-align: start; text-indent: 0px; widows: auto; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">
—<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>
<div style="orphans: auto; text-align: start; text-indent: 0px; widows: auto; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">
<a href="http://www.energyville.be" class="">http://www.energyville.be</a></div>
<div style="color: rgb(0, 0, 0); letter-spacing: normal; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; orphans: auto; text-align: start; text-indent: 0px; widows: auto; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">
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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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<div>
<blockquote type="cite" class="">
<div class="">On 28 Mar 2016, at 14:34, Geoffrey LOSSA [531522] <<a href="mailto:Geoffrey.LOSSA@umons.ac.be" class="">Geoffrey.LOSSA@umons.ac.be</a>> wrote:</div>
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<div class="WordSection1" style="page: WordSection1; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;">
<div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">
Dear all,<o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">
<o:p class=""> </o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">
I’m looking to calculate the stored electrostatic energy in order to deduct some parasitic capacitance of a system (inductor).<o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">
What is the term or the expression to be integrated in the Getdp electrostatic formulation?<o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">
<o:p class=""> </o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">
Thanks in advance for the help,<o:p class=""></o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">
<o:p class=""> </o:p></div>
<div style="margin: 0in 0in 0.0001pt; font-size: 11pt; font-family: Calibri, sans-serif;" class="">
Geoffrey<o:p class=""></o:p></div>
</div>
<span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">_______________________________________________</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<span style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; float: none; display: inline !important;" class="">getdp
mailing list</span><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<a href="mailto:getdp@onelab.info" style="color: purple; text-decoration: underline; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">getdp@onelab.info</a><br style="font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">
<a href="http://onelab.info/mailman/listinfo/getdp" style="color: purple; text-decoration: underline; font-family: Helvetica; font-size: 12px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px;" class="">http://onelab.info/mailman/listinfo/getdp</a></div>
</blockquote>
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