<div dir="ltr">Dear neks<div><br></div><div>I want to compute the rhs of the linearized Navier-Stokes equation which would be of the form</div><div><br></div><div>M du/dt = A(us) u + Bp</div><div>0 = B^T u</div><div><br></div>
<div>where us is the stationary solution about which the equations are linearized. I want to use ARPACK to compute eigenvalues for which I need to be able to compute the above matrix-vector products. Is this already available in some part of nek. I have tried to read perturb.f but have not succeeded in clearly understanding the code.</div>
<div><br></div><div>Thanks</div><div>praveen</div></div>