MATEC Web Conf.
Volume 261, 20195ième Congrès International Francophone de Mécanique Avancée (CIFMA 2018)
|Number of page(s)||3|
|Section||Flows, Transport Phenomena, and Interactions|
|Published online||29 January 2019|
Bedform dynamics from coupled bed-flow direct numerical simulations
1 School of Engineering, Lebanese American University, Byblos, Lebanon
2 Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL, USA
3 ExxonMobil Upstream Research Company, Houston, TX, USA
* Corresponding author: firstname.lastname@example.org
We present results of time-evolving coupled direct numerical simulations between an erodible bed and an overlying pressure-driven, turbulent flow field. A total of 6 simulations are considered, the details of which are shown in Table 1. The numerical setup consists of a horizontally periodic open channel, and the simulations are run at a shear Reynolds number of Reτ = 180. The coupling between the spatially and temporally evolving sediment bed and the flow field is enforced through the explicit immersed boundary method (IBM) of Uhlmann . The flow field is fully resolved and is obtained by integrating the conservation of mass and momentum equations using a pseudo spectral code . On the other hand, the sediment bed is modelled via the Exner equation . Details about the numerical approach are available in [4-5].
© Owned by the authors, published by EDP Sciences, 2019
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