<div dir="ltr"><div class="gmail_extra"><span style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">Hi Neks</span><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px"><br></div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">when I setup a profile 2D flow, there are informations like this, but the simulation is not crash,</div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px"><br></div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px"><div style="margin:0px;font-size:18px;font-family:'Andale Mono';color:rgb(41,249,20);background-color:rgb(0,0,0)"><div style="margin:0px">Step 800, t= 8.0000000E-02, DT= 1.0000000E-04, C= 0.431 9.2444E+03 1.0117E+01</div><div style="margin:0px"> Solving for fluid F T T</div><div style="margin:0px"> 800 100 **ERROR**: Failed in HMHOLTZ: VELX 3.7727E-16 5.3129E-02 1.0000E-16</div><div style="margin:0px"> 800 100 **ERROR**: Failed in HMHOLTZ: VELY 2.4683E-16 3.5181E-02 1.0000E-16</div><div style="margin:0px"> 800 U-PRES gmres: 23 5.6827E-15 1.0000E-14 9.6473E-07 9.5640E-01 2.4052E+00</div><div style="margin:0px"> 800 8.0000E-02 1.0044E+01 Fluid done</div><div style="margin:0px"> 800 8.00000000000E-02 6.70022578679E-01 1.99103625323E-01 4.70918953356E-01 1dragx</div><div style="margin:0px"> 800 8.00000000000E-02 4.12612202513E-01 5.10664067531E-01 -9.80518650173E-02 1dragy</div><div style="margin:0px"> dump history points</div><div style="margin:0px"> done :: dump history points</div><div><br></div></div><div><br></div><div>The CFL number is below than 0.5 already, the polynomial order is 7 in this case. when I choose a lower order p, this information will be disappeared after several iteration steps. I have checked the mesh looks fine, the parameters setting are copied from “ext_cyl” with a smaller values of p21 to p25, I don’t know what is wrong, should I ignore ?</div></div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px"><br></div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">thanks,</div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px"><br></div><div style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">Wei</div><div><br></div>
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