TY - JOUR
TI - A novel box-type scheme for variable coefficient fractional sub-diffusion equationunder Neumann boundary conditions
AU - Zhang Pu
AU - Cao Lili
JN - Thermal Science
PY - 2024
VL - 28
IS - 4
SP - 3435
EP - 3441
PT - Article
AB - In this paper, a novel box-type scheme with convergence order O(τ3-α + h2) is  constructed for the fractional sub-diffusion equation with spatially  variable coefficient under Neumann boundary conditions. Using L2 formula and  the energy method, stability of the scheme are proved. A numerical example  is carried out and the result meets with the theoretical analysis.