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Hogendoorn W, Poelma C. Particle-Laden Pipe Flows at High Volume Fractions Show Transition Without Puffs. Phys Rev Lett. 2018;121(19):194501doi: 10.1103/PhysRevLett.121.194501.
Hogendoorn, W., & Poelma, C. (2018). Particle-Laden Pipe Flows at High Volume Fractions Show Transition Without Puffs. Physical review letters, 121(19), 194501. https://doi.org/10.1103/PhysRevLett.121.194501
Hogendoorn, Willian, and Poelma, Christian. "Particle-Laden Pipe Flows at High Volume Fractions Show Transition Without Puffs." Physical review letters vol. 121,19 (2018): 194501. doi: https://doi.org/10.1103/PhysRevLett.121.194501
Hogendoorn W, Poelma C. Particle-Laden Pipe Flows at High Volume Fractions Show Transition Without Puffs. Phys Rev Lett. 2018 Nov 09;121(19):194501. doi: 10.1103/PhysRevLett.121.194501. PMID: 30468602.
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Phys Rev Lett. 2018 Nov 09;121(19):194501. doi: 10.1103/PhysRevLett.121.194501.

Particle-Laden Pipe Flows at High Volume Fractions Show Transition Without Puffs.

Physical review letters

Willian Hogendoorn, Christian Poelma

Affiliations

  1. Delft University of Technology, Multiphase Systems (3ME-P&E), 2628 CA Delft, The Netherlands.

PMID: 30468602 DOI: 10.1103/PhysRevLett.121.194501

Abstract

Using ultrasound imaging velocimetry, we are able to present unique insight in transitional particle-laden flows. Together with a Moody diagram of time-averaged properties, we demonstrate that the laminar-turbulent transition behavior at high volume fractions is distinct from the single-phase case and cases with low volume fractions. For low volume fractions, a sharp transition is found with the presence of turbulent puffs, similar to the single-phase case. Seemingly, particles in this regime trigger subcritical transition. For high volume fractions a smooth transition is discovered without turbulent puffs in the transition regime. For this regime, particles cause a supercritical transition.

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