<div dir="ltr"><div><div><div><div>Hi Nek's,<br><br>I have a question regarding the linearised Navier-Stokes solver while the underlying base flow is time-dependant. As far as I understand, one should simply have to set param(31) = 1 to achieve this (and p31 = -1 for a steady state base flow). What about the boundary conditions however?<br>
<br>For instant, I want to investigate the linear dynamics of perturbations evolving onto a lid-driven cavity flow exhibiting a periodic limit cycle I have computed. How could I impose in userbc:<br><br>ux = 1<br></div>uy = 0<br>
</div>uz = 0<br><br>for the periodic base flow time-evolution, and in the meantime:<br><br><div><div>ux = 0<br></div>uy = 0<br></div>uz = 0<br><br></div>for the perturbation?<br><br></div>Cheers,<br>JC<br clear="all"><div>
<div><div><div><div><div><br>-- <br><div dir="ltr">Jean-Christophe Loiseau<br><a href="https://sites.google.com/site/loiseaujc/" target="_blank">Homepage</a><br></div>
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