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BranchSwitching

oxiphysics_core::continuation

Struct BranchSwitching 

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pub struct BranchSwitching {
    pub epsilon: f64,
    pub max_iter: usize,
    pub tol: f64,
}
Expand description

Bordered-system branch switching at a bifurcation point.

Solves the bordered system [J, v; w^T, 0] [du; dσ] = [-F; 0] where v and w are the (approximate) null vectors of J to switch branches. Returns the perturbed state on the new branch.

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§epsilon: f64

Perturbation magnitude ε applied in the null-space direction.

§max_iter: usize

Maximum Newton iterations for the corrector after switching.

§tol: f64

Newton tolerance.

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impl BranchSwitching

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pub fn new(epsilon: f64, max_iter: usize, tol: f64) -> Self

Create a new BranchSwitching with given parameters.

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pub fn switch( &self, state: &ContinuationState, jac: &dyn Fn(&[f64], f64) -> Vec<Vec<f64>>, ) -> ContinuationState

Switch branch at state using the bordered system approach.

Returns the new continuation state on the secondary branch.

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