<div dir="ltr">Eddie's description is correct. Apologies for the lack of clarity.<div><br></div><div>I have been working in 2D cylindrical prior to this. My problem is the finite size of the z-dimension, I would like to avoid this issue. My understanding of this simulation space is that by restricting my domain to 1D (radius) I can approximate an infinitely-long axial dimension.</div><div><br></div><div>It is not clear to me how the absorption physics would be calculated without dimension perpendicular to the radius.</div><div><br></div><div>-Zach</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Aug 16, 2021 at 11:35 AM David Blackman <<a href="mailto:drblackman@eng.ucsd.edu">drblackman@eng.ucsd.edu</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Yeah, that also make sense, as simulating he plasma expanding
laterally through the lasers radial beam profile. It still makes
more sense to do that as a 2D cylindrical simulation though
surely? Would the absorption physics even work like that in 1D?<br>
</p>
<div>On 16/08/2021 08:26, Eddie Hansen
wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">If I understand correctly, the objective is to
have a laser that travels in the axial direction (perpendicular
to the radius), and the beam has a radial profile. He wants to
simulate in 1D cylindrical and observe plasma expansion
radially.</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Aug 16, 2021, 10:13 AM
David Blackman <<a href="mailto:drblackman@eng.ucsd.edu" target="_blank">drblackman@eng.ucsd.edu</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>I'm not sure I understand exactly what you are trying to
do. What you asking doesn't seem to make sense. The laser
will travel along the radius, yet your super Gaussian
profile will be spatially varying at 90 degrees to the
radius, and you want to do it in 1D. I suspect you want a
polar geometry with the laser traveling in from the
radius, right?<br>
<br>
Maybe look at the 2D laser slab? You might be able to put
something together with cylindrical geometry, you could
model it as a circle arc at the end of a tube with the
laser coming in from the longitudinal direction maybe?
Otherwise a well refined Cartesian grid might be better.<br>
</p>
<div>On 16/08/2021 07:59, Thibault Goudal wrote:<br>
</div>
<blockquote type="cite">
<div style="font-family:arial,helvetica,sans-serif;font-size:12pt;color:rgb(0,0,0)">
<div>Hello,<br>
</div>
<div>just to contribute to the conversation, in the
example1d.par, the geometry is cartesian. I haven't
seen explicitely a flash.par input deck including 1D
spherical geometry and laser energy deposition.<br>
</div>
<div>I'm not sure that it's possible so far unless
mimicing a spherical geometry with
cartesian/cylindrical mesh but not confident of
catching the physics accurently. <br>
</div>
<div><br>
</div>
<hr id="gmail-m_-429587563889322433m_-7397335141211779995zwchr">
<div><b>De: </b>"Zach Barfield" <a href="mailto:zachbarfield60@gmail.com" rel="noreferrer" target="_blank"><zachbarfield60@gmail.com></a><br>
<b>À: </b>"Andy Sha Liao" <a href="mailto:andy@f.energy" rel="noreferrer" target="_blank"><andy@f.energy></a><br>
<b>Cc: </b>"flash-users" <a href="mailto:flash-users@flash.uchicago.edu" rel="noreferrer" target="_blank"><flash-users@flash.uchicago.edu></a><br>
<b>Envoyé: </b>Lundi 16 Août 2021 16:39:16<br>
<b>Objet: </b>Re: [FLASH-USERS] Laser across a 1D
domain<br>
</div>
<div><br>
</div>
<div>
<div dir="ltr">Yes,<br>
<div>In example1d.par the laser is a single ray that
propagates along the radius. I am interested in
sending a spatially-varying (supergaussian) laser
across the radius.</div>
<br>
<div>-Zach</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Aug 16,
2021 at 10:20 AM Andy Sha Liao <a href="mailto:andy@f.energy" rel="noreferrer" target="_blank"><andy@f.energy></a>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Zach,<br>
<br>
<div>Have you looked at example1d.par in
LaserSlab? </div>
<br>
<br>
<div>Andy</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Aug
16, 2021 at 9:05 AM Zach Barfield <<a href="mailto:zachbarfield60@gmail.com" rel="noreferrer" target="_blank">zachbarfield60@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Hello all,<br>
<div>Does anyone know how to simulate a
laser impinging <i>across</i> the radius
of a 1D radial domain?</div>
<div>It seems to me that FLASH has no
capability of including dimensionality in
the laser beam when using a 1D geometry,
is this true?</div>
<br>
<div>I am using a 1D radial domain because I
would like to simulate the laser heating
of a cylinder of gas with an approximately
infinite z-dimension. I am only interested
in the temporal evolution of the radial
profile.</div>
<br>
<div>Cheers,</div>
<div>Zach Barfield</div>
</div>
</blockquote>
</div>
</blockquote>
</div>
<br>
</div>
</div>
</blockquote>
</div>
</blockquote>
</div>
</blockquote>
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</blockquote></div>