Validation of the particle finite element method (PFEM) for simulation of free surface flows

Abstract

Literari Network Awards for Excellence: "Engineering Computationa" Outstanding Paper Presented at COMPLAS X - International Conference on Computational Plasticity in BarcelonaPurpose – The purpose of this paper is to evaluate the possibilities of the particle finite element method for simulation of free surface flows.\ud Design/methodology/approach – A numerical simulation of a number of examples for which experimental data are available is performed. The simulations are run using the same scale as the experiment in order to minimize errors due to scale effects. Some examples are chosen from the civil engineering field: a study of the flow over a flip bucket is analyzed for both 2D and 3D models, and the flow under a planar sluice gate is studied in 2D. Other examples, such as a 2D and 3D “dam break” with an obstacle are taken from the smooth particle hydrodynamics literature.\ud Findings – Different scenarios are simulated by changing the boundary conditions for reproducing flows with the desired characteristics. Different mesh sizes are considered for evaluating their influence on the final solution.\ud Originality/value – Details of the input data for all the examples studied are given. The aim is to identify benchmark problems for future comparisons between different numerical approaches for free surface flows.Peer ReviewedAward-winningPostprint (published version

Lagrangian versus Eulerian integration errors

“…The PFEM has been successfully used to solve the Navier-Stokes equations [18][19][20][21] and fluid-structure interaction problems [22][23][24][25] as well as solid mechanics problems [26]. The advantages of the PFEM concerning the tracking of internal interfaces have also been explored and used to solve fluid mechanics problems including multi-fluid flows [27].…”

Unified Lagrangian Formulation for Fluid and Solid Mechanics, Fluid-Structure Interaction and Coupled Thermal Problems Using the PFEM

“…In the last years, many scientific publications have shown the efficacy of the PFEM for solving free surface flow problems, see among others [32,68,117]. The PFEM has also been tested successfully in other kind of problems, such as fluid mechanics including thermal convection-diffusion [5,80,95], multi-fluids [36,62], granular materials [131], bed erosion [87], FSI [81,132] and excavation [19].…”

“…Shape method for detecting the contours of the domains and then performing the Delaunay triangulation with the geometric restrictions of those boundaries [68,87,130].…”

Analysis of the discharge capacity of radial-gated spillways using CFD and ANN – Oliana Dam case study

“…This method utilizes an underlying mesh that is regenerated at each time step and has been successfully applied to solve a wide number of engineering problems involving fluid-structure interaction, as well as dam hydraulics (Larese et al 2008 ), some of which are hard to solve with alternative methods (Onate et al 2004.…”