scholarly journals Second-Order Stable Finite Difference Schemes for the Time-Fractional Diffusion-Wave Equation

2014 ◽  
Vol 65 (1) ◽  
pp. 411-430 ◽  
Author(s):  
Fanhai Zeng
Keyword(s):  
Wave Equation ◽  
Finite Difference ◽  
Fractional Diffusion ◽  
Second Order ◽  
Difference Schemes ◽  
Finite Difference Schemes ◽  
Diffusion Wave

Two finite difference schemes for time fractional diffusion-wave equation

2013 ◽  
Vol 64 (4) ◽  
pp. 707-720 ◽  
Author(s):  
Jianfei Huang ◽  
Yifa Tang ◽  
Luis Vázquez ◽  
Jiye Yang
Keyword(s):  
Wave Equation ◽  
Finite Difference ◽  
Fractional Diffusion ◽  
Difference Schemes ◽  
Finite Difference Schemes ◽  
Diffusion Wave

scholarly journals Backward differentiation formula finite difference schemes for diffusion equations with an obstacle term

2020 ◽  
Author(s):  
Olivier Bokanowski ◽  
Kristian Debrabant
Keyword(s):  
Finite Difference ◽  
Mathematical Finance ◽  
Second Order ◽  
Difference Schemes ◽  
Diffusion Equations ◽  
Finite Difference Schemes ◽  
Differentiation Formula ◽  
Backward Differentiation Formula ◽  
Hamilton Jacobi Bellman ◽  
Nicolson Scheme

Abstract Finite difference schemes, using backward differentiation formula (BDF), are studied for the approximation of one-dimensional diffusion equations with an obstacle term of the form $$\begin{equation*}\min(v_t - a(t,x) v_{xx} + b(t,x) v_x + r(t,x) v, v- \varphi(t,x))= f(t,x).\end{equation*}$$For the scheme building on the second-order BDF formula, we discuss unconditional stability, prove an $L^2$-error estimate and show numerically second-order convergence, in both space and time, unconditionally on the ratio of the mesh steps. In the analysis an equivalence of the obstacle equation with a Hamilton–Jacobi–Bellman equation is mentioned, and a Crank–Nicolson scheme is tested in this context. Two academic problems for parabolic equations with an obstacle term with explicit solutions and the American option problem in mathematical finance are used for numerical tests.

Sign in / Sign up

Export Citation Format

Share Document