Numerical Simulation Study on the Concentration Field in an Oscillatory Flow Reactor with Conic Ring Baffles

Abstract:

The three-dimensional construct of concentration field in an oscillatory flow reactor (OFR) containing periodically spaced conic ring baffles was investigated by numerical simulation employing Reynolds-averaged Navier-Stokes equations. The computation covered a range of Oscillatory Reynolds number (Reo) from 623.32 to 3116.58 at Strouhal number (St) 0.995 and 1.99. The contour of concentration field showed that the concentration in the most part of the channel is relative uniform and a small retention area is found below the conic ring baffles, which means a region of relative poor mixing. In addition, the turbulent diffusion coefficient calculated from the simulation results implied the greater oscillatory amplitude and oscillatory frequency superimposed to the fluid, the stronger is the turbulence intensity.

• Periodical: Applied Mechanics and Materials (Volume 378)
• Pages: 418-423
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.378.418
• Online since: August 2013
• Authors: Gang Liu, Jia Wu, Wei Li
• Keywords: Concentration Field, Conic Ring Baffles, Numerical Simulation, Oscillatory Flow Reactor, Turbulent Diffusion Coefficient

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