Investigation of Wall Shape and Immersed Body Effect on Two Phases (Solid - liquid) Fluidized Bed
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Abstract
The fluidized bed was commonly investigated with the walls of the test section being straight walls. The difference in this investigation is that the walls of the fluidized bed were taken as sine waves. The investigations were performed numerically. The SolidWorks software program was used to create the geometry, while the Ansys Fluent software program was used to perform the simulations. The computational fluid dynamics model was validated using the experimental and the numerical results from other research; it was also validated using the fluidized bed equation for velocity. The velocity of the flowing fluid was changed four times (0.15 m/s, 0.25 m/s, 0.35 m/s, and 0.45 m/s), while the initial height of the particles was altered two times (0.15 m and 0.25 m). Another geometry was created for the fluidized bed, which contained three holes that worked as immersed bodies. The results showed that the average pressure of the fluidized bed increased with the velocity of the working fluid. For a 0.15 m/s water velocity, the pressure was 9 kPa. As the water velocity was raised to 0.45 m/s, the pressure elevated to 13 kPa. Moreover, increasing the velocity of the working fluid led to an increase in the fluidization head. It was also shown that the wall shape created more turbulence and circulation in the fluidization process than the normal straight walls.
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