Weighted Time-Semidiscretization Quasilinearization Method for Solving Rihards' Equation

This paper concerns efficient \(\sigma \) - weighted (\(0<\sigma <1\)) time-semidiscretization quasilinearization technique for numerical solution of Richards’ equation. We solve the classical and a new \(\alpha \) - time-fractional (\(0<\alpha <1\)) equation, that models anomalous diffusion in porous media. High-order approximation of the \(\alpha =2(1-\sigma )\) fractional derivative is applied. Numerical comparison results are discussed.

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