ANALYSIS OF MOLTEN MATERIAL RELOCATION PROCESS DURING A SEVERE ACCIDENT OF REACTOR USING THE SEMI-IMPLICIT MOVING PARTICLE (MPS) METHOD
The process of relocating molten material during a nuclear reactor accident is important to study because a nuclear reactor has a very complex structure. The potential for damage to a nuclear reactor must be minimized by considering the process of relocating the molten material because the very comp...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/65581 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The process of relocating molten material during a nuclear reactor accident is important to study because a nuclear reactor has a very complex structure. The potential for damage to a nuclear reactor must be minimized by considering the process of relocating the molten material because the very complex structure can be one of the aspects that cause serious accidents. Therefore, in this study, an analysis of the molten material relocation process during a reactor accident was carried out using the Moving Particle Semi-implicit (MPS) method. The MPS method is a method that can analyze the free surface of an incompressible liquid without using a mesh grid. The MPS method can calculate interactions between particles using discretized gradients and laplacians and substituting load functions. There are three geometric designs that are simulated in this study, namely the process of relocating the molten material when it hits an inclined plane using water, oil, and paraffin wax materials, the process of relocating the molten material from two different tanks using water, mesran oil, and silicone oil, and the process of relocating molten material that resembles the shape of a reactor tank using Corium-100, Corium-22, and Fe75B25 materials. For the second design, experiments were carried out as a form of validation of the MPS method so that it could perform simulations for the third design. The data obtained are in the form of flow velocity, pressure profile, material flow pattern, and the mixing process of the two immiscible materials. It can be concluded that the characteristics of the material, namely density, and kinematic viscosity, affect the flow velocity, pressure, and surface shape of the melting material. |
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