PARTICLE BASED SIMULATION FINITE VOLUME PARTICLE (FVP) METHOD OF TWO IMMISCIBLE FLUIDS
In this modern era, the need for energy is increasing, the environment issues caused by the energy industry is also increasing. Therefore, one of the long-term alternative energy sources is nuclear energy. However, as is well known, there have been many nuclear reactor accidents, such as the Chernob...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/63911 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | In this modern era, the need for energy is increasing, the environment issues caused by the energy industry is also increasing. Therefore, one of the long-term alternative energy sources is nuclear energy. However, as is well known, there have been many nuclear reactor accidents, such as the Chernobyl, Three Miles Island, and Fukushima reactors. In those cases, there was an accident in the core reactor. In the reactor core reactor accidents, especially the melting of the reactor core. One phenomenon that occurs is the process of stratification of the molten metal component of the melted reactor core. Then in another situation in a Boiling Water Reactor (BWR), bubble flow phenomenon can be observed, generated by the heat from the fission reaction of nuclear fuel which boils the surrounding. In this study, we will discuss the process of stratification and bubble rising of two immiscible and incompressible fluids using simulation. In this study, we will discuss the bubble rising and stratification process of two immiscible and incompressible fluids using simulation. The simulation method that is used is a particle-based method which has advantages over the mesh method in simulating free surface conditions and has lighter computational load. The particle method used in this simulation is the Finite Volume Particle (FVP) method. In analyzing a complex reactor, the initial step is carried out with simple simulations using everyday fluids to examine the effect of fluid parameters on the process of a fluid mechanics phenomenon. The simulation of the stratification process is carried out using three types of fluids, water, cooking oil, and lubricating oil which are combined into three variations. Then for the bubble rising simulation, three variations were also carried out, bubble diameter, tube width, and bubble density. The stratification simulation results will be compared with the experimental results obtained from the reference. From the simulation results obtained, there is a pattern similar to the experimental results. Simulation data is also processed to obtain the penetration ratio between fluids in each variation as well as the length of penetration of water through cooking oil and lubricating oil. The results show that the magnitude of the difference in fluid density affects stratification process. Meanwhile, in the bubble rising simulation, it will be compared with the theory. Of the three variations in the bubble rising simulation, each variation affects the velocity of the bubble towards the surface. |
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