A modified cubic B-spline differential quadrature method for three-dimensional non-linear diffusion equations

作者：Dahiya Sumita^*; Mittal Ramesh Chandra

来源：Open Physics, 2017, 15(1): 453-463.

DOI：10.1515/phys-2017-0051

• Brusselator system
• Michales-Menten system
• Burgers' Equation
• Modified cubic B-spline DQM
• SSP-RK43 method

This paper employs a differential quadrature scheme for solving non-linear partial differential equations. Differential quadrature method (DQM), along with modified cubic B-spline basis, has been adopted to deal with three-dimensional non-linear Brusselator system, enzyme kinetics of Michaelis-Menten type problem and Burgers' equation. The method has been tested efficiently to three-dimensional equations. Simple algorithm and minimal computational efforts are two of the major achievements of the scheme. Moreover, this methodology produces numerical solutions not only at the knot points but also at every point in the domain under consideration. Stability analysis has been done. The scheme provides convergent approximate solutions and handles different cases and is particularly beneficial to higher dimensional non-linear PDEs with irregularities in initial data or initial-boundary conditions that are discontinuous in nature, because of its capability of damping specious oscillations induced by high frequency components of solutions.

• 出版日期2017-1