Development of in/outflow boundary conditions for MPM simulation of uniform and non-uniform open channel flows

Xuanyu Zhao, Marco Bolognin, Lian Donfang, Alexander Rohe, Phil Vardon

Research output: Contribution to journalArticleScientificpeer-review

9 Citations (Scopus)
143 Downloads (Pure)

Abstract

This paper describes the development and application of inflow and outflow boundary conditions (BCs) for the material point method (MPM) in order to simulate fluid flow problems. This corresponds to velocity and pressure controlled BCs. Due to the coupled Lagrangian and Eulerian description of the fluid motion in MPM it is necessary to add and remove material points, with appropriate kinematic properties, to and from the computational domain. The newly-developed BCs have been used to simulate uniform open channel flow and the phenomenon of free overfall in open channels, which is transient conditions leading to non-uniform flow due to a sudden bed level drop. It is shown that the numerical results predict well the flow geometry including end depth ratio, pressure distribution and accelerations, therefore the velocities and displacements.
Original languageEnglish
Pages (from-to)27-33
Number of pages7
JournalComputers & Fluids
Volume179
DOIs
Publication statusPublished - 30 Jan 2019

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Material point method
  • Inflow/outflow boundary conditions
  • Free overfall
  • Open channel flows

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