petsc-3.7.1 2016-05-15
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TSSetI2Function

Set the function to compute F(t,U,U_t,U_tt) where F = 0 is the DAE to be solved.

Synopsis

#include "petscts.h"  
PetscErrorCode TSSetI2Function(TS ts,Vec F,TSI2Function fun,void *ctx)
Logically Collective on TS Many br

Input Parameters

ts - the TS context obtained from TSCreate() Many br
F - vector to hold the residual (or NULL to have it created internally) Many br
fun - the function evaluation routine Many br
ctx - user-defined context for private data for the function evaluation routine (may be NULL) Many br

Calling sequence of fun

 fun(TS ts,PetscReal t,Vec U,Vec U_t,Vec U_tt,Vec F,ctx);

t - time at step/stage being solved Many br
U - state vector Many br
U_t - time derivative of state vector Many br
U_tt - second time derivative of state vector Many br
F - function vector Many br
ctx - [optional] user-defined context for matrix evaluation routine (may be NULL) Many br

Many br

Keywords

TS, timestep, set, ODE, DAE, Function

See Also

TSSetI2Jacobian()

Level:beginner
Location:
src/ts/interface/ts.c
Index of all TS routines
Table of Contents for all manual pages
Index of all manual pages