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Commit d25b28b7 authored by Christophe Geuzaine's avatar Christophe Geuzaine
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Update microstrip.pro

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......@@ -104,10 +104,10 @@ Group{
FunctionSpace {
/* The function space in which we shall pick the electric scalar potential "v"
solution is definied by
solution is defined by
- a domain of definition (the "Support": "Dom_Hgrad_v_Ele")
- a type ("Form0" means scalar field)
- a set of scalar basis functions ("BF_Node" means nodal basis functions)
- a set of basis functions ("BF_Node" means scalar nodal basis functions)
- a set of entities to which the basis functions are associated ("Entity":
here all the nodes of the domain of definition "NodesOf[All]")
- a constraint (here the Dirichlet boundary conditions)
......@@ -116,11 +116,11 @@ FunctionSpace {
v(x,y) = Sum_k vn_k sn_k(x,y)
where the "vn_k" are the nodal values (connectors) and "sn_k(x,y)" the
nodal basis functions. Not all connectors are unknowns of the FE problem,
due to the "Constraint", which assigns particular values to the nodes of
the Ground and Electrode regions. GetDP deals with that automatically on
basis of the definition of the FunctionSpace. */
where the "vn_k" coefficients are the nodal values (connectors) and
"sn_k(x,y)" the nodal basis functions. Not all connectors are unknowns of
the FE problem, due to the "Constraint", which assigns particular values to
the nodes of the Ground and Electrode regions. GetDP deals with that
automatically on basis of the definition of the FunctionSpace. */
{ Name Hgrad_v_Ele; Type Form0;
BasisFunction {
......@@ -128,7 +128,7 @@ FunctionSpace {
Support Dom_Hgrad_v_Ele; Entity NodesOf[ All ]; }
// using "NodesOf[All]" instead of "NodesOf[Dom_Hgrad_v_Ele]" is an
// optimization, which allows GetDP to not explicitly build the list of
// all nodes
// all the nodes
}
Constraint {
{ NameOfCoef vn; EntityType NodesOf; NameOfConstraint Dirichlet_Ele; }
......@@ -140,8 +140,8 @@ Jacobian {
/* Jacobians are used to specify the mapping between elements in the mesh and
the reference elements (defined in standardized unit cells) over which
integration is performed. "Vol" represents the classical 1-to-1 mapping
between elements of identical geometrical dimension, i.e. in this case a
reference triangle/quadrangle onto triangles/quadrangles in the z=0 plane
between identical spatial dimensions, i.e. in this case a reference
triangle/quadrangle onto triangles/quadrangles in the z=0 plane
(2D <-> 2D). "Sur" would be used to map the reference triangle/quadrangle
onto triangles/quadrangles in a 3D space (2D <-> 3D), or to map the
reference line segment onto segments in 2D space (1D <-> 2D). "Lin" would
......@@ -178,15 +178,15 @@ Formulation {
(-Div(epsilon Grad v) , v')_Vol_Ele = 0
holds for all so-called "test-functions" v', where (.,.)_D denotes an inner
product over the domain D. If the test-functions v' are differentiable,
product over a domain D. If the test-functions v' are differentiable,
integration by parts using Green's identity leads to finding v such that
(epsilon Grad v, Grad v')_Vol_Ele + (epsilon n.Grad v, v')_Bnd_Vol_Ele = 0
holds for all v', where Bnd_Vol_Ele is the boundary of Vol_Ele. In our
microstrip example this surface term vanishes, as either there is no test
function v' (on the Dirichlet boundary) or the "epsilon n.Grad v" is zero
(on the homogeneous Neumann boundary). We are thus eventually looking for
microstrip example this surface term vanishes, as there is either no test
function v' (on the Dirichlet boundary), or "epsilon n.Grad v" is zero
(on the homogeneous Neumann boundary. We are thus eventually looking for
functions v in the function space Hgrad_v_Ele such that
(epsilon Grad v, Grad v')_Vol_Ele = 0
......
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