Yg. Lai et Aj. Przekwas, A MULTIGRID ALGORITHM FOR A MULTIBLOCK PRESSURE-BASED FLOW AND HEAT-TRANSFER SOLVER, Numerical heat transfer. Part B, Fundamentals, 30(2), 1996, pp. 239-254
A multigrid algorithm is developed along with an implicit multiblock p
ressure-based solver for calculating flow and heat transfer problems o
n nonorthogonal grids. The implicit treatment of the block interface h
as proven to be important for the efficiency of a multiblock method In
this study, the implicitness is adopted for all grid levels during a
multigrid solution process. As a result, the block interface becomes i
nvisible in the final solutions and the convergence is not adversely a
ffected. The proposed multiblock multigrid algorithm is demonstrated o
n several representative two-dimensional flow and heat transfer proble
ms. The results show that order-of-magnitude saving in computational t
ime can be achieved with the multigrid algorithm.