<div dir="ltr">Hello,<br><br>I am a new user of PETSC and I have a hopefully not too embarassing question. I am trying to integrate and timestep the 3D acoustic wave equation:<br><br>u_tt = ( c2 ) * LAPLACIAN( u )<br><br>
Does any of the timestepping operators in PETSc work with a second-order derivative with the one above? Normally, I would just expand u_tt as a finite difference approximation using Leapfrog (or CN or RK ...) and explicitly solve for the u field at timestep n+1. However I would like to use the vector-matrix formulation in PETSc -my goal is to be able to solve the acoustic wave equation explicitly or implicitly (the user would decide with a command-line option).<br>
<br>Thanks,<br>Mark <br clear="all"><br>-- <br>Mark Patrick Cheeseman<br><br>Research Scientist<br>KSL (KAUST Supercomputing Laboratory)<br>Building 1, Office #126<br>King Abdullah University of Science & Technology<br>
Thuwal 23955-6900<br>Kingdom of Saudi Arabia<br> <br>EMAIL : <a href="mailto:mark.cheeseman@kaust.edu.sa">mark.cheeseman@kaust.edu.sa</a><br>PHONE : +966 (2) 808 0221 (office)<br> +966 (54) 470 1082 (mobile)<br>
SKYPE : mark.patrick.cheeseman<br>
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