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Show Industrial Furnace Design Intelligent Support System if-Diss Takehito Imanari, Masaru Takei and Tsuneaki Nakamura Tokyo Gas Co.. Ltd. 1-16-25 Shibaura, Minato-ku, Tokyo 105 Japan Akira Osawa Osaka Gas Co., Ltd. 6-19-9 Torishima Konohana-ku, Osaka 554 Japan Syuichi Aoki Toho Gas Co., Ltd. 507-2 Shinpo-Machi, Tokai-shi, Aichi 476 Japan A B S T R A CT This paper describes the development and application of "if-Diss" (Industrial Furnace Design Intelligent Support System), a specialized CFD (Computational Fluid Dynamics) preprocessor for industrial furnaces. if-Diss is aimed to maximize the potential of C F D methods whose wider application has been expected to optimize design parameters as well as operating conditions of a wide variety of industrial furnaces. Having compiled a lot of know-how and expertise to model various furnaces, if-Diss facilitate the use of CFD, making it more attractive for furnace designers and engineers. if-Diss, developed by Tokyo Gas, in collaboration with Osaka Gas and Toho Gas, works as a front-end processor for major CFD solvers such as CFX, FLUENT/UNS and STAR-CD. if-Diss intelligently specifies numerical conditions suitable for industrial furnaces and generates input files to forward them to the CFD solvers. It consists of graphical user interface with a grid generator and a data-base of various analytical models. Analytical models, coded as user defined subprograms, allow users without detailed mathematical backgrounds to simulate complicated phenomena in the furnace. Coded in JAVA language, which runs under the internet browser, if-Diss can be used through network, thereby making it more user friendly and handy. 1. INTRODUCTIONS Natural gas for industrial use has been increasing in Japan, with its shares in volume more than a third of the total gas supplied. Since industrial heating is one of the main energy utilization of industries, it is very important for gas companies to put efforts to improve the performance of natural gas fueled industrial furnaces. Providing engineering service is one of the crucial tactics to gain customer satisfaction and market expansion. Industrial furnaces are used for many purposes such as reheating, forging, melting, drying, deodoring and heat-treating. With their sizes and processes different from each other, industrial furnaces need to meet various requirements such as higher thermal performance and lower environmental impact. Designing new furnaces or retrofitting existing ones requires proper considerations on various design parameters influencing furnace performances, such as furnace size and configurations, burner specifications, fuel input and so on. Since industrial furnaces are usually large in scale with high treating temperature, experimental approach is limited, 1 |