Journal of Chemical Engineering & Process Technology
Open Access

Department of Chemical Engineering, Lakehead University, Thunder Bay, Ontario, Canada

Biography

Siamak Elyasi, an associate professor in Chemical Engineering, has developed a device that uses UV lights which he believes could disinfect any type of mask in about 20 minutes. He built the unit using a 3D printer and readily available materials.

Publications

• Research Article   
  A Numerical Model for Bubble Column Reactors: Prediction of the Fractional Gas Holdup by the Implementation of the Drift-Flux Model
  Author(s): Azadeh Bahramian* and Siamak Elyasi
  
  Comprehensive knowledge of hydrodynamics inside a reactor is crucial for the design and scale-up of bubble columns. Fractional gas holdup (αg) is an important parameter that should be obtained for the design of bubble column reactors. The estimation of this parameter depends mainly on experimental procedures. Drift-flux theory is one of the most practical and accurate models for calculating the gas holdup. Although many researchers have studied bubble column reactors, because of the limits of the experimental setting, there are few studies that have operated over a wide range of superficial gas velocities. In this work, a transient 3-D numerical simulation of upward air-water flow in the bubble column was performed over a wide range of superficial gas velocities (0.025-0.4 m/s) using the Eulerian-Eulerian model. The effect of the superficial gas velocity on the flow pattern was .. View More»
  DOI: 10.35248/2157-7048.19.10.396

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