Exploring Waves Propagation with a Newly Developed High-Performance Code in OpenFoam using Free-Surface Capturing Approach

A. Mehmood; D. I. Graha; K. Langfeld; D. M. Greaves; K. Akhtar; A. Naveed

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Exploring Waves Propagation with a Newly Developed High-Performance Code in OpenFoam using Free-Surface Capturing Approach

Author(s)

A. Mehmood Department of Mechanical Engineering, University of Engineering and Technology, Peshawar, Pakistan

D. I. Graha University of Plymouth, Drake Circus, Plymouth PL4 8AA, United Kingdom

K. Langfeld University of Plymouth, Drake Circus, Plymouth PL4 8AA, United Kingdom

D. M. Greaves University of Plymouth, Drake Circus, Plymouth PL4 8AA, United Kingdom

K. Akhtar Department of Mechanical Engineering, University of Engineering and Technology, Peshawar, Pakistan

A. Naveed Department of Mechanical Engineering, University of Engineering and Technology, Peshawar, Pakistan

Abstract

To address the demands of contemporary research and industry, it is crucial to reduce computational costs and rely on open-source codes to simulate real-world wave propagation phenomena. As a response, we have developed an efficient solver for modeling free surfaces within the OpenFOAM computational fluid dynamics (CFD) software package. Our approach involves employing the finite volume method for discretization to solve the Laplacian of the velocity potential. Moreover, we have devised the necessary kinematic and dynamic boundary conditions to depict fluid behavior at the computational domain's boundaries and the free surface's behavior. The convergence analysis demonstrated the expected first-order accuracy of the solver as the error decreased with a reduction in grid size. Time discretization study showed good temporal convergence as decreasing the time step size resulted in lower error. Wave period comparison validated the numerical solution by comparing it with 2nd-order Stokes theory, and a close agreement was observed between the simulated and analytical wave periods. We also validated our model by comparing them with experimental data from previous studies. The comparisons showed good agreement between the numerical simulations and experimental measurements, confirming the reliability of the developed numerical model. It is pertinent to note that our solver and boundary conditions are novel, exclusive to our research and were not present in the standard OpenFOAM distribution.

Publication Details

Page(s) 12-24

DOI DOI not available

Published Journal: Technical Journal, Volume: 28, Issue: 2, Year: 2023

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Keywords

Modelling, - CFD, Potential flow