Fluidization Characteristic of Sewage Sludge Particles

Abstract:

The main objective of this study is to determine the basic characteristics of fluidization using sewage sludge particle as non-visual phenomena which can then be modeled physically and numerically with the program of Computational Fluid Dynamic (CFD). CFD modeling using Eulerian model incorporating the kinetic theory for solid particles was applied to the gas-solid flow at various superficial velocities for different particle sizes. The transfer momentum was calculated using Syamlal-O'Brien drag function and Eulerian multiphase model was used for analysis. Two-Dimensional computational domains discretized using rectangular cells (Quad), made within the 20 iteration steps of 0,001s. The gas velocity is found to be the ​​the most important factors that influence the formation process of fluidization; by increasing the rate of fluidization the bed expanse occurs higher as well the time of onset fluidization is shorter. The phenomenon can be explained well by modeling and simulation.

• Periodical: Applied Mechanics and Materials (Volume 776)
• Pages: 294-299
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.776.294
• Online since: July 2015
• Authors: I. Nyoman Suprapta Winaya*, Rukmi Sari Hartati, I. Nyoman Gde Sujana
• Keywords: CFD, Fluidization, Sewage Sludge, Simulation

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