Local block refinement with a multigrid flow solver
Article first published online: 14 DEC 2001
Copyright © 2001 John Wiley & Sons, Ltd.
International Journal for Numerical Methods in Fluids
Volume 38, Issue 1, pages 21–41, 10 January 2002
How to Cite
Lange, C. F., Schäfer, M. and Durst, F. (2002), Local block refinement with a multigrid flow solver. Int. J. Numer. Meth. Fluids, 38: 21–41. doi: 10.1002/fld.202
- Issue published online: 14 DEC 2001
- Article first published online: 14 DEC 2001
- Manuscript Revised: 21 DEC 2000
- Manuscript Received: 8 AUG 2000
- grid refinement;
- block-structured grids;
- finite volume method
A local block refinement procedure for the efficient computation of transient incompressible flows with heat transfer is presented. The procedure uses patched structured grids for the blockwise refinement and a parallel multigrid finite volume method with colocated primitive variables to solve the Navier-Stokes equations. No restriction is imposed on the value of the refinement rate and non-integer rates may also be used. The procedure is analysed with respect to its sensitivity to the refinement rate and to the corresponding accuracy. Several applications exemplify the advantages of the method in comparison with a common block structured grid approach. The results show that it is possible to achieve an improvement in accuracy with simultaneous significant savings in computing time and memory requirements. Copyright © 2002 John Wiley & Sons, Ltd.