A general framework for the integration of computational fluid dynamics and process simulation

Computational fluid dynamics (CFD) and process simulation are widely used i n the process industry. The two technologies are largely complementary, eac h being able to capture and analyse some of the important process character istics. Their combined application can, therefore, lead to significant indu strial benefits. This is especially true for systems, such as chemical reac tors, in which steady-state performance, dynamics and control strategy depe nd on mixing and fluid flow behaviour. This paper presents a new approach f or the integration of the capabilities of CFD technology and process simula tion via a general interface that allows the automatic exchange of critical variables between the two packages, leading to a simultaneous solution of the overall problem. The approach applies to both steady-state and dynamic problems. The feasibility of the approach and its first practical implement ation are demonstrated by integrating a widely used CFD package (Fluent 4.5 , by Fluent Inc.) within a general-purpose advanced process simulator (gPRO MS 1.7, by Process Systems Enterprise Ltd. (1999)). One case study involvin g a batch reactor is used to illustrate the ability of the combined tool to provide information on the detailed interactions between fluid mechanics, heat transfer, reaction and control strategy, and to provide insights on im portant design and operational decisions. (C) 2000 Elsevier Science Ltd. Al l rights reserved.