H-refinement is a mesh refinement technique used in numerical methods for solving partial differential equations (PDEs). It involves refining the mesh by subdividing elements to increase accuracy in areas where the solution may exhibit rapid changes or complexities, effectively enhancing the resolution of the computational grid. This method is particularly useful when dealing with problems that have localized features, such as sharp gradients or discontinuities, allowing for better approximation of the solution while maintaining computational efficiency.
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