Lötstedt, P. and Ramage, A. and Hemmingsson-Frändén, L. and Söderberg, S. (2002) Implicit solution of hyperbolic equations with space-time adaptivity. BIT Numerical Mathematics, 42 (1). pp. 134-158. ISSN 0006-3835Full text not available in this repository. (Request a copy from the Strathclyde author)
Adaptivity in space and time is introduced to control the error in the numerical solution of hyperbolic partial differential equations. The equations are discretised by a finite volume method in space and an implicit linear multistep method in time. The computational grid is refined in blocks. At the boundaries of the blocks, there may be jumps in the step size. Special treatment is needed there to ensure second order accuracy and stability. The local truncation error of the discretisation is estimated and is controlled by changing the step size and the time step. The global error is obtained by integration of the error equations. In the implicit scheme, the system of linear equations at each time step is solved iteratively by the GMRES method. Numerical examples executed on a parallel computer illustrate the method.
|Keywords:||Finite volume method - linear multistep method - error control - adaptivity - GMRES - parallel computation, Mathematics|
|Subjects:||Science > Mathematics|
|Department:||Faculty of Science > Mathematics and Statistics|
|Depositing user:||Strathprints Administrator|
|Date Deposited:||27 Jan 2007|
|Last modified:||06 Jan 2017 03:12|