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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Dallagi, Heni Gheith, Ramla Saabi, Ahmad Al Faille, Christine Augustin, Wolfgang Benezech, Thierry Aloui, Fethi |
| Copyright Year | 2018 |
| Abstract | In some industrial processes, aqueous foams flow presents an important phase of the process, whereas, they cause pressure drop when designing and dimensioning systems. Identifying the different rheological parameters of foam flow is an interest key to understanding the interfacial phenomena. Actually, the difficulty to model the rheological parameters of foam flow is a major challenge. In this study, we present a robust model to describe the foam fluid inside horizontal channels by the reverse approach of a numerical simulation (Computational Fluid Dynamics: CFD), based on the behavior laws of the Herschel-Bulkley type, for the non-Newtonian fluids. This reverse method starts from experimental (deduced from Particle Image Velocimetry (PIV) technique) results of the previous experimental work of Chovet (2015). The pressure losses measurements near-wall velocity fields, velocity profiles and the wall shear stress evolution including the void fraction from 55% to 85%, are considered in order to identify the different parameters of the developed model to determine the nature of the flow, the foams rheological behavior and the foam flow regime along the length of the channel. The numerical study (CFD) is applied for two conditions: the first one for a wet foam flow with a void fraction of 70% and a foam flow velocity of 2cm/s (one-dimensional regime) and the second one, for a foam quality of 55% and a flow rate of 6cm/s. The numerical evolutions are identical to experimental ones for these same conditions. Therefore, we can conclude that the Herschel-Bulkley rheological model can correctly describe the aqueous foams fix behavior. |
| Sponsorship | Fluids Engineering Division |
| File Format | |
| ISBN | 9780791851579 |
| DOI | 10.1115/FEDSM2018-83338 |
| Volume Number | Volume 3: Fluid Machinery; Erosion, Slurry, Sedimentation; Experimental, Multiscale, and Numerical Methods for Multiphase Flows; Gas-Liquid, Gas-Solid, and Liquid-Solid Flows; Performance of Multiphase Flow Systems; Micro/Nano-Fluidics |
| Conference Proceedings | ASME 2018 5th Joint US-European Fluids Engineering Division Summer Meeting |
| Language | English |
| Publisher Date | 2018-07-15 |
| Publisher Place | Montreal, Quebec, Canada |
| Access Restriction | Subscribed |
| Subject Keyword | Computational fluid dynamics Computer simulation Rheology Dimensions Flow (dynamics) Pressure Non-newtonian fluids Design Foams (chemistry) Interface phenomena Fluids Pressure drop Particulate matter Shear stress Porosity |
| Content Type | Text |
| Resource Type | Article |
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