The Establishment of the Interactive Program on the Analysis of the Equivalent Thermal Properties of the Nuclear Fuel Bundle and Nuclear Fuel Casing Materials

th , 2012; revised: Sep. 20 th , 2012; accepted: Oct. 9 th , 2012 Abstract: Nuclear is now an important energy source for people, however, when the operation of the nuclear power plants, spent fuel is definitely produced as the waste material. Unfortunately, these spent fuel not only undisposed but also a big problem for the storage. Insufficient of storage space can let power plants stop operating and unsafe storage can cause the nuclear disaster. A well-developed spent fuel dry storage system is one of the methods to solve the storage problem. For last decade, Taiwan Taipower Company introduces a system module from USA, but it turns out not a suitable program for spent fuel dry storage system in Taiwan. To design and construct a suitable system for Taiwan, we need to do CFD simulations. FLUENT is a commercial CFD program with strong ability. With the help of FLUENT, INER get the accurate result of simulations. However, some of the simulation steps were inconvenient, such as the parameters were not friendly and hard on database renewing for FLUENT. With Visual Basic, we produce a new pro- gram, namely ADSS, to solve above problems. This program contains modularize calculation models for fuel assembly, homogenization model for fuel bundles and power distribution. With the help of the windows operation interface, the program connects with FLUENT very easy and makes the simulation processes be more effective as well. The simu- lation results shown the error were within 10% for the temperature distribution compare with the temperature use by the traditional method.