@Article{IJNAM-20-805, author = {Fiordilino , Joseph Anthony and Winger , Matthew}, title = {Unconditionally Energy Stable and First-Order Accurate Numerical Schemes for the Heat Equation with Uncertain Temperature-Dependent Conductivity}, journal = {International Journal of Numerical Analysis and Modeling}, year = {2023}, volume = {20}, number = {6}, pages = {805--831}, abstract = {

In this paper, we present first-order accurate numerical methods for solution of the heat equation with uncertain temperature-dependent thermal conductivity. Each algorithm yields a shared coefficient matrix for the ensemble set improving computational efficiency. Both mixed and Robin-type boundary conditions are treated. In contrast with alternative, related methodologies, stability and convergence are unconditional. In particular, we prove unconditional, energy stability and optimal-order error estimates. A battery of numerical tests are presented to illustrate both the theory and application of these algorithms.

}, issn = {2617-8710}, doi = {https://doi.org/10.4208/ijnam2023-1035}, url = {http://global-sci.org/intro/article_detail/ijnam/22142.html} }