NUMERICAL ASSESMENT FOR CHARACTERISTIC OF HEAT TRANSFER NATURAL, FORCE AND COMBINED CONVECTION ON SUB CHANNEL WITH TRIANGULAR CYLINDER ARRANGEMENT

• Main Author: WALUYO (NIM : 24907001) Pembimbing 1 : Prof. Dr. Ir. Aryadi Suwono; Pembimbing 2 : Dr. Ir. Na, AGUS
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/14730
• Institution: Institut Teknologi Bandung

One of the research topics that are still being developed today is the heat transfer <br /> <br /> <br /> <br /> process that occurs in a nuclear reactor core. Heat transfer occurs in a nuclear reactor <br /> <br /> <br /> <br /> core covering natural, forced or combined convection. The role of natural, forced and <br /> <br /> <br /> <br /> combined convection in a nuclear reactor system are very important for safety <br /> <br /> <br /> <br /> systems. By studying the natural, forced and combined convection the importance of <br /> <br /> <br /> <br /> the safety limits, such as the allowed maximum power, minimum coolant flow rate <br /> <br /> <br /> <br /> and the maximum temperature of cooling nuclear reactors will be obtained. The limits <br /> <br /> <br /> <br /> of safety are important for determining the normal operating condition of a nuclear <br /> <br /> <br /> <br /> reactor and its emergency action that has to be taken in the event of an accident. <br /> <br /> <br /> <br /> Although convection correlation equations, especially the one for natural convection <br /> <br /> <br /> <br /> is very important, its availability is still very low and its accuracy is also still limited. <br /> <br /> <br /> <br /> This research is focused in observing the characteristics of natural, forced or <br /> <br /> <br /> <br /> combined convective heat transfer at a vertical sub channel with triangular <br /> <br /> <br /> <br /> arrangement of cylinders by using the FLUENT 6.3 computer software. <br /> <br /> <br /> <br /> The objectives of this research is to find a correlation equation of natural, forced and <br /> <br /> <br /> <br /> combined convective heat transfers. The Correlation equation can be compared with <br /> <br /> <br /> <br /> experiments following this study. To support the results of experiments carried out, <br /> <br /> <br /> <br /> so in this study will also do the design of the test model will be used in the <br /> <br /> <br /> <br /> experiment. Numerical simulations conducted in this study also uses the same test <br /> <br /> <br /> <br /> model that is used in the experiment.