The purpose of this paper is to show how these three problems influence the grid generation process for CFD applications. A further complication is the employment of codes with different model levels and solution approaches.
Every method has different requirements with respect to grid generation.
Surface grid generation is one of the major problems in grid generation. The definition of the block faces and the surfaces of the configuration is the process where most changes to the grid will occur. Therefore an interactive grid generation system, which is closely connected to the CAD data base helps to minimize the turn-around time. One of the features of the system discussed is a projection technique which assures that the generated grid lies on the original surfaces supplied by the CAD system. Special attention is paid to the multi-block concept, and its special features are discussed.