[petsc-users] Steps to solve time step second-order differential problem

[Jed Brown]

You can either rewrite as a first-order system or use TSSetI2Function (see examples) with TSALPHA2.

https://urldefense.us/v3/__https://petsc.org/release/manualpages/TS/TSSetI2Function/*tsseti2function__;Iw!!G_uCfscf7eWS!a0HRe5m1TFfnxS6ZDGPkzSdsxgzubcDgMzFOPD-04IN5oE7gYM8QZnR9wcBCLVAWC47fej6mbRTAVAodtGc$ 

Diego Magela Lemos via petsc-users <petsc-users at mcs.anl.gov> writes:

> For a second-order differential problem defined as
>
> M u_tt + C u_t + K u = F(t)
>
> what would be the steps to solve this problem using TS?
>
> P.S.: I already have the matrices M, C, and K implemented as Mat objects.