<div>Hi, </div>
<div> </div>
<div>Does anyone happen to meet such convergency problem? I have implemented a petsc solver </div>
<div>to simulate driven cavity flow problem. I use petsc to solve the poisson equation. When I set the space step </div>
<div>dx = 1 or 0.01, it works fine. However, when i tried to simulate a meso scale problem, i set dx = 0.0001, dt = 0.00001. </div>
<div>I got a error : floating point execption..</div>
<div> </div>
<div>Does anyone point me out how to solve this problem ?</div>
<div> </div>
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<div><br clear="all"><br><br>ong<br>Solidification Simulation Lab, <br>State Key Lab of Mould & Die Technology,<br>Huazhong Univ. of Sci. & Tech. China </div>