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THMT-15. Proceedings of the Eighth International Symposium On Turbulence Heat and Mass Transfer
September, 15-18, 2015, Sarajevo, Bosnia and Herzegovina

DOI: 10.1615/ICHMT.2015.THMT-15


ISBN Print: 978-1-56700-427-4

ISBN CD: 978-1-56700-428-8

Deposition fraction of ellipsoidal fibers in a turbulent duct flow

pages 575-578
DOI: 10.1615/ICHMT.2015.THMT-15.1240
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ABSTRAKT

The dynamics of elongated fibers is complex because of their anisotropic shape effect. To study motion of such particles, hydrodynamic forces and torques of the fibers were determined using creeping formulations and to examine dispersion and deposition of fibers in turbulent duct flow user defined subroutines were developed and coupled to the Fluent discrete phase model (DPM) module. These user defined subroutines were proposed to solve for the coupled translation and rotational equations of motion for ellipsoidal fibers using the simulated flow field from the Fluent package. Studies were performed for dispersion and deposition of fibers in a turbulent duct flow. Results highlighted the importance of proper turbulence fluctuations modeling in the deposition of fibers in turbulent flows. Good agreement is observed in prediction of fiber deposition in the turbulent channel flow in comparison with the previous experimental results.

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