Adaptive time step for unsteady system
We are using a constant time step for the unsteady system. Sometimes, the boundary condition or body force changes only in a small time interval. Using a constant time step is inefficient for the whole simulation. Is it possible to add an adaptive time step and only set the CFL value? For example, we update the integration coefficients, alpha, beta, and gamma, in each time integration by taking into account the nonuniform time steps.