[petsc-dev] How to get subsnes for subproblems based field decomposition

[Lulu Liu]

Hi,

For example, I would like to solve the nonlinear driven cavity problem
(ex19.c in SNES). There are four components: u,v, omega, T.

I want to solve one equation at one time, is there any easier way to get
subsnes (for subproblems) from original SNES.

Thanks!

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