Boundary markers of nodes and faces in Tetgen
Let's say I create a .poly detailing the information of the my domain geometry.
I also add node boundary markers and face boundary markers.
Question 1:
Do I have to be consistent between the boundary markers of nodes and faces? I mean, if a node belongs to a face with boundary marker 1, do I have to label it with 1 too?
Question 2:
In the case there's no need to be consistent, what will happen when I create the mesh? Specifically talking, which boundary markers will appear in .face and .node files? The boundary markers of the faces or the nodes specified in the .poly file? How should I proceed to propagate the boundary markers in a good way
(I'm doing Finite element method, so I want to know which are my Dirichlet and Neumann faces)?
finite-element-analysis tetgen
asked Nov 10 '18 at 5:43
Gonzalo BenavidesGonzalo Benavides
1186
add a comment |
Let's say I create a .poly detailing the information of the my domain geometry.
I also add node boundary markers and face boundary markers.
Question 1:
Do I have to be consistent between the boundary markers of nodes and faces? I mean, if a node belongs to a face with boundary marker 1, do I have to label it with 1 too?
Question 2:
In the case there's no need to be consistent, what will happen when I create the mesh? Specifically talking, which boundary markers will appear in .face and .node files? The boundary markers of the faces or the nodes specified in the .poly file? How should I proceed to propagate the boundary markers in a good way
(I'm doing Finite element method, so I want to know which are my Dirichlet and Neumann faces)?
finite-element-analysis tetgen
asked Nov 10 '18 at 5:43
Gonzalo BenavidesGonzalo Benavides
1186
add a comment |
Let's say I create a .poly detailing the information of the my domain geometry.
I also add node boundary markers and face boundary markers.
Question 1:
Do I have to be consistent between the boundary markers of nodes and faces? I mean, if a node belongs to a face with boundary marker 1, do I have to label it with 1 too?
Question 2:
In the case there's no need to be consistent, what will happen when I create the mesh? Specifically talking, which boundary markers will appear in .face and .node files? The boundary markers of the faces or the nodes specified in the .poly file? How should I proceed to propagate the boundary markers in a good way
(I'm doing Finite element method, so I want to know which are my Dirichlet and Neumann faces)?
finite-element-analysis tetgen
asked Nov 10 '18 at 5:43
Gonzalo BenavidesGonzalo Benavides
1186
Let's say I create a .poly detailing the information of the my domain geometry.
I also add node boundary markers and face boundary markers.
Question 1:
Do I have to be consistent between the boundary markers of nodes and faces? I mean, if a node belongs to a face with boundary marker 1, do I have to label it with 1 too?
Question 2:
In the case there's no need to be consistent, what will happen when I create the mesh? Specifically talking, which boundary markers will appear in .face and .node files? The boundary markers of the faces or the nodes specified in the .poly file? How should I proceed to propagate the boundary markers in a good way
(I'm doing Finite element method, so I want to know which are my Dirichlet and Neumann faces)?
finite-element-analysis tetgen
finite-element-analysis tetgen
asked Nov 10 '18 at 5:43
Gonzalo BenavidesGonzalo Benavides
1186
asked Nov 10 '18 at 5:43
Gonzalo BenavidesGonzalo Benavides
1186
edited Nov 10 '18 at 17:57
Gonzalo Benavides
asked Nov 10 '18 at 5:43
Gonzalo BenavidesGonzalo Benavides
1186
asked Nov 10 '18 at 5:43
Gonzalo BenavidesGonzalo Benavides
1186
asked Nov 10 '18 at 5:43
Gonzalo BenavidesGonzalo Benavides
1186
1186
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
Dirichlet boundary conditions are associated with nodal degrees of freedom; Neumann boundary conditions describe fluxes/tractions on element faces.
Dirichlet boundary conditions will be specified at nodes. The node ids are pertinent here.
Neumann boundary conditions are specified on element faces.
They are separate by definition and necessity. I am not sure about the Tetgen generation tool, but my guess is that node and element numbering should not be affected by your boundary conditions.
answered Nov 12 '18 at 18:10
duffymoduffymo
270k32315503
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53236317%2fboundary-markers-of-nodes-and-faces-in-tetgen%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Dirichlet boundary conditions are associated with nodal degrees of freedom; Neumann boundary conditions describe fluxes/tractions on element faces.
Dirichlet boundary conditions will be specified at nodes. The node ids are pertinent here.
Neumann boundary conditions are specified on element faces.
They are separate by definition and necessity. I am not sure about the Tetgen generation tool, but my guess is that node and element numbering should not be affected by your boundary conditions.
answered Nov 12 '18 at 18:10
duffymoduffymo
270k32315503
add a comment |
Dirichlet boundary conditions are associated with nodal degrees of freedom; Neumann boundary conditions describe fluxes/tractions on element faces.
Dirichlet boundary conditions will be specified at nodes. The node ids are pertinent here.
Neumann boundary conditions are specified on element faces.
They are separate by definition and necessity. I am not sure about the Tetgen generation tool, but my guess is that node and element numbering should not be affected by your boundary conditions.
answered Nov 12 '18 at 18:10
duffymoduffymo
270k32315503
add a comment |
Dirichlet boundary conditions are associated with nodal degrees of freedom; Neumann boundary conditions describe fluxes/tractions on element faces.
Dirichlet boundary conditions will be specified at nodes. The node ids are pertinent here.
Neumann boundary conditions are specified on element faces.
They are separate by definition and necessity. I am not sure about the Tetgen generation tool, but my guess is that node and element numbering should not be affected by your boundary conditions.
answered Nov 12 '18 at 18:10
duffymoduffymo
270k32315503
Dirichlet boundary conditions are associated with nodal degrees of freedom; Neumann boundary conditions describe fluxes/tractions on element faces.
Dirichlet boundary conditions will be specified at nodes. The node ids are pertinent here.
Neumann boundary conditions are specified on element faces.
They are separate by definition and necessity. I am not sure about the Tetgen generation tool, but my guess is that node and element numbering should not be affected by your boundary conditions.
answered Nov 12 '18 at 18:10
duffymoduffymo
270k32315503
answered Nov 12 '18 at 18:10
duffymoduffymo
270k32315503
answered Nov 12 '18 at 18:10
duffymoduffymo
270k32315503
answered Nov 12 '18 at 18:10
duffymoduffymo
270k32315503
270k32315503
add a comment |
add a comment |
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53236317%2fboundary-markers-of-nodes-and-faces-in-tetgen%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
