Gas-particle flows are very commonly found in pharmaceutical, chemical and petroleum industries. The optimization of the operations involved normally requires a detailed knowledge of the very intrinsic phenomena that take place within the equipment handling the mixture. Once multiphase flows have peculiar characteristics, their behavior should be extensively evaluated. One of these characteristics is the turbophoresis, which occurs in turbulent confined gas-solid flows. The dispersed phase concentrates at the walls and forms a segregated particle flow, where high mass-loading effects become important. Thus, in this work the Euler/Lagrange approach to three-dimensional unstructured meshes is used to numerically assess the turbophoretic effect. The influence of the coupling between phases (two- and four-way coupling) and wall roughness are taken into account. Results show that the particle deposition depends on the coupling and wall roughness. Four-way coupling effects are observed to increase the turbophoresis phenomenon and modify the gas phase dynamics.
- Fluids Engineering Division
A Numerical Analysis of the Turbophoresis in a Turbulent Gas-Particle Flow
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Utzig, J, de Souza, FJ, & Meier, HF. "A Numerical Analysis of the Turbophoresis in a Turbulent Gas-Particle Flow." Proceedings of the ASME 2014 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels. Volume 1C, Symposia: Fundamental Issues and Perspectives in Fluid Mechanics; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Gas-Solid Flows: Dedicated to the Memory of Professor Clayton T. Crowe; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes. Chicago, Illinois, USA. August 3–7, 2014. V01CT18A011. ASME. https://doi.org/10.1115/FEDSM2014-21993
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