A hybrid expert system for complex CFD problems.

A new problem solving strategy for complex CFD systems is described, revolving around a new hybrid system which incorporates the advantages of both conventional and expert systems. The paper describes the structure of expert systems and subsequently their operation and illustrates the technique through a local compressible flow analysis example. Comparison of the operations for forward and backward chaining expert systems with conventional systems leads to an understanding of the advantages and disadvantages of each. Based upon these observations, a new hybrid system and associated problem solving strategy is described. Application was made to complex grid adaptation of the two dimensional Euler equations, highlighting the high efficiency and flexibility of the hybrid system.