<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Are you working from a particular example, or writing your own code from scratch?<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">Am 03.02.2021 um 18:11 schrieb Stefano Zampini <<a href="mailto:stefano.zampini@gmail.com" class="">stefano.zampini@gmail.com</a>>:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Cannot say anything if you don't provide a minimal code we can run to reproduce the issue</div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Il giorno mer 3 feb 2021 alle ore 20:07 Sepideh Kavousi <<a href="mailto:skavou1@lsu.edu" class="">skavou1@lsu.edu</a>> ha scritto:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div class="">Hello,</div>
<div dir="ltr" class="">I have a very stupid problem that I am really ashamed of asking but it has been with me for days and I do not know what to do. I want to solve the Javier stokes equation with finite difference method. When I wanted to run the code, the snes norm
value does not change and i get an error for timestep convergence. I thought I might do something wrong so, I <span style="font-size:inherit" class="">tried to simplify the equation I want to solve to an easy form, given as:</span></div>
<div dir="ltr" class="">u_t=u_x +u_y</div>
<div dir="ltr" class="">Where _t is the time derivative and _x and _y are the derivative in x and y direction. When I want to solve this problem, it still does not do anything at all and the snes function norm is zero all the time. I know I am missing something but
does anyone have any idea what should I check in my code. The answers does not change with time.</div>
<div dir="ltr" class="">Best,</div>
<div dir="ltr" class="">Sepideh</div>
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</blockquote></div><br clear="all" class=""><div class=""><br class=""></div>-- <br class=""><div dir="ltr" class="gmail_signature">Stefano</div>
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