<div dir="ltr">Hi,<div><br></div><div>I'm wondering if there is a TS example for a similar system:</div><div><br></div><div>d/dt [f(x)] = g(x)</div><div><br></div><div>For example, in PFLOTRAN, we have the following governing equation for subsurface flow:<br>
</div><div><br></div><div>d/dt [ sat(P)*den(P)*por] = - g(P)</div><div><br></div><div>where,</div><div>sat = saturation,</div><div>den = density,</div><div>por = porosity,</div><div>P = Pressure</div><div><br></div><div>PFLOTRAN uses SNES to solve the nonlinear system of equations that arises from a backward Euler time discretization. I'm trying to seek guidance on how one would go about reformulating PFLOTRAN's equations to use TS.</div>
<div><br></div><div>Thanks,</div><div>-Gautam</div></div>