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Please, have a look at the tutorial 13
<a class="moz-txt-link-freetext" href="http://geuz.org/gmsh/doc/texinfo/gmsh.html#t13_002egeo">http://geuz.org/gmsh/doc/texinfo/gmsh.html#t13_002egeo</a><br>
I think it describes exactly what you want to achieve.<br>
<br>
Best,<br>
Mikhail<br>
<br>
<br>
<div class="moz-cite-prefix">On 03/17/2015 10:44 AM, Thomas
Bernhardt wrote:<br>
</div>
<blockquote
cite="mid:CAJBAppqg6cUfGb0u+20X4iLTNgtotH6HSTcA_7P8w0L_JrypYA@mail.gmail.com"
type="cite">
<div dir="ltr">This works if I want the mesh to be as small as the
smaller of the meshes across the surface but what if the mesh is
too small and I want it to be the size of the larger?
<div class="gmail_extra"><br>
<div class="gmail_quote">On Tue, Mar 17, 2015 at 9:22 AM,
Mikhail Artemyev <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:artemiev.mikhail@gmail.com" target="_blank">artemiev.mikhail@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF"> Here is a quick and
dirty solution:<br>
<br>
// --- scalpel2.geo ---<br>
Merge "scalpel2.step";<br>
Mesh.CharacteristicLengthMax = 2;<br>
Mesh.Algorithm = 1; // MeshAdapt<br>
<br>
The picture of the mesh I got is attached.<br>
<br>
Best,<br>
Mikhail
<div>
<div><br>
<br>
<br>
<div>On 03/17/2015 09:54 AM, Thomas Bernhardt wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">The original scalpel is present in
the .step file and in the .geo file I have
defined one compound surface. My goal is to be
able to have a uniform mesh throughout that
compound surface. The end goal is to have a
process for making uniform meshes across
surfaces that are one surface but divided on a
CAD model. Thanks for your help.</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Tue, Mar 17, 2015 at
8:46 AM, Mikhail Artemyev <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:artemiev.mikhail@gmail.com"
target="_blank">artemiev.mikhail@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF"> Hi
Thomas,<br>
<br>
If you share that example of a scalpel
with Compound Surfaces that you defined, I
can try and show what can be done.<br>
<br>
Best,<br>
Mikhail
<div>
<div><br>
<br>
<br>
<div>On 03/17/2015 09:18 AM, Thomas
Bernhardt wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Can you give me an
example of how I can change the
mesh sizes in practice? Where do I
change that option?</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Thu,
Mar 12, 2015 at 9:43 AM, Mikhail
Artemyev <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:artemiev.mikhail@gmail.com"
target="_blank">artemiev.mikhail@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0
.8ex;border-left:1px #ccc
solid;padding-left:1ex">
<div dir="ltr">
<div class="gmail_extra">Hi
Thomas,<br>
<br>
</div>
<div class="gmail_extra">I
would suggest to play with
the size of the mesh
cells. There are several
ways: <a
moz-do-not-send="true"
href="http://geuz.org/gmsh/doc/texinfo/gmsh.html#Specifying-mesh-element-sizes"
target="_blank">http://geuz.org/gmsh/doc/texinfo/gmsh.html#Specifying-mesh-element-sizes</a><br>
<br>
</div>
<div class="gmail_extra">Best,<br>
</div>
<div class="gmail_extra">Mikhail<br>
<br>
</div>
<div class="gmail_extra"><br>
<br>
<div class="gmail_quote"><span>On
Thu, Mar 12, 2015 at
10:05 AM, <span
dir="ltr"><<a
moz-do-not-send="true"
href="mailto:gmsh-request@ace20.montefiore.ulg.ac.be" target="_blank">gmsh-request@ace20.montefiore.ulg.ac.be</a>></span>
wrote:<br>
</span>
<blockquote
class="gmail_quote"
style="margin:0px 0px
0px
0.8ex;border-left:1px
solid
rgb(204,204,204);padding-left:1ex">
<div
style="overflow:hidden"><span>Hello,<br>
In this picture
the top is the
original mesh of
the scalpel. In
the bottom<br>
I defined some
compound surfaces.
The mesh changed
but the problem is
that<br>
even in the one
compound surface
the mesh goes from
point to point and
is<br>
smaller in the
areas where there
used to be a
smaller surface. I
would like<br>
to be able to have
a uniform mesh
across surfaces.
Does this make the<br>
problem clear?
Thanks for your
help.<br>
<br>
On Wed, Mar 11,
2015 at 9:51 AM,
David Bernstein
<<br>
<a
moz-do-not-send="true"
href="mailto:David.Bernstein@meliorinnovations.com" target="_blank">David.Bernstein@meliorinnovations.com</a>>
wrote:<br>
<br>
</span> > Hi
Thomas, I?m sorry
but I don?t
understand your
problem. It would
be
<div>
<div><br>
> helpful if
you could post a
small example.<br>
><br>
> Dave<br>
><br>
> On Mar
10, 2015, at
10:14 AM, Thomas
Bernhardt <<a
moz-do-not-send="true" href="mailto:tzbernhardt@gmail.com"
target="_blank">tzbernhardt@gmail.com</a>><br>
> wrote:<br>
><br>
> I am
finding that I
can define a
compound surface
and instead of a
bunch<br>
> of separate
meshes it treats
it as one mesh
but the points
from the<br>
> original
surface
divisions
remain. So the
problem is that
the mesh is<br>
> defined
based on points.
The one mesh is
the same as the
original broken
up<br>
> meshes. The
mesh will still
be smaller on
the part of the
compound surface<br>
> that used
to be a smaller
surface because
points are
closer together.
Any<br>
> fix for
this? Thanks for
your help!<br>
><br>
> Thomas
Bernhardt<br>
><br>
> On Tue, Mar
10, 2015 at
10:23 AM, David
Bernstein <<br>
> <a
moz-do-not-send="true"
href="mailto:David.Bernstein@meliorinnovations.com" target="_blank">David.Bernstein@meliorinnovations.com</a>>
wrote:<br>
><br>
>> Hi
Thomas, Take a
look at the
Compound
Line/Surface/Volume
entities in<br>
>> Gmsh.
These will
probably do what
you want.<br>
>><br>
>>
Regards,<br>
>> Dave<br>
>><br>
>><br>
>> > On
Mar 10, 2015, at
7:42 AM, Thomas
Bernhardt <<a
moz-do-not-send="true" href="mailto:tzbernhardt@gmail.com"
target="_blank">tzbernhardt@gmail.com</a>><br>
>> wrote:<br>
>> ><br>
>> >
Hello,<br>
>> > I
am trying to
create a mesh in
gmsh of a model
that I have
imported.<br>
>> The
problem that I
find is that
every line in
the model
divides the
mesh.<br>
>> Is
there a way to
mesh the whole
surface as one
body ignoring
the lines<br>
>> that
divide parts.
For example on a
simple aircraft
model there will
be a<br>
>> line
dividing the
metal surface
from the glass
of the cockpit.
However,<br>
>> when
defining a mesh
I want to ignore
this division
and treat it as
one<br>
>> single
surface. Thanks
for any help you
can provide.<br>
>> ><br>
>> >
Thomas Bernhardt<br>
>> >
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