Abstract: An interactive method of block grid generation is studied, including the issues of interactive input, graphics view, grid quality check, visual random control of grid solving process, etc. An interactive generation system-BIGG is developed by the above techniques. The numerical results of grid generation and flow solution indicate that the interactive technique presented is feasible and effective, the system-BIGG improves the generation efficiency and grid quality.

Key words: grid, visualization, block decomposition, quality check