<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><div>Hi,</div><div>I'm working on the parallelization of an existing 3D solver for incompressible Navier-Stokes equations based on a cut-cell method. </div><div>The equations are discretized on a Cartesian staggered grid on which an arbitrary complex geomertry is represented by its level-set function such that the method preserves the usual Cartesian 7-points stencil. </div><div>The time integration is performed with a semi-explicit projection method (AB/BDF2) and as a result a Poisson eq. (for the pressure) and a Helmoltz eq. (momentum) must be solved at each time step. </div><div>Due to the data structure I plan to use DMDA object to build the linear system, am I right ? </div><div>I read in the archives that dmda objects were not designed to handle with staggered grids, does it still hold ?</div><div>And finally I plan to model my code on the ksp example ex46.c, is there any F90 version of it ? </div><div>Any advice and suggestions will be greatly appreciated.</div><div>Best regards,</div><div>Yoann</div><div><h1 style="box-sizing: border-box; margin: 0px 0px 20px; padding: 0px 0px 19px; border-width: 0px 0px 1px; border-bottom-style: solid; border-bottom-color: #eeeeee; outline: 0px; font-size: 36.63px; vertical-align: baseline; font-weight: 300; line-height: 40px; color: #333333; font-family: 'Open Sans', 'Liberation Sans', FreeSans, sans-serif; background: 0px 0px #ffffff;" data-mce-style="box-sizing: border-box; margin: 0px 0px 20px; padding: 0px 0px 19px; border-width: 0px 0px 1px; border-bottom-style: solid; border-bottom-color: #eeeeee; outline: 0px; font-size: 36.63px; vertical-align: baseline; font-weight: 300; line-height: 40px; color: #333333; font-family: 'Open Sans', 'Liberation Sans', FreeSans, sans-serif; background: 0px 0px #ffffff;"><br></h1></div><div><span name="x"></span>=================================================<br>Yoann CHENY <br>Maître de Conférences<br>Enseignement : EEIGM 03 83 36 83 49<br>Recherche : <a href="http://lemta.ensem.inpl-nancy.fr/" data-mce-href="http://lemta.ensem.inpl-nancy.fr/">LEMTA</a> UMR 7563 CNRS 03 83 59 55 94 <div>=================================================<br><div><br></div></div><span name="x"></span><br></div></div></body></html>