TY - JOUR
T1 - Modeling oil dispersion under breaking waves. Part I: Wave hydrodynamics
AU - Cui, Fangda
AU - Daskiran, Cosan
AU - King, Thomas
AU - Robinson, Brian
AU - Lee, Kenneth
AU - Katz, Joseph
AU - Boufadel, Michel C.
N1 - Funding Information:
This research was supported by a contract with the Department of Fisheries and Oceans Canada, Center for Offshore Oil and Gas Exploration Research, and through a grant from the Multi-Partner Research Initiative under Grant Number MECTS-#3939073-v1-OFSCP. However, no official endorsement should be implied by these entities. This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation (NSF) Grant Number TG-BCS190002. Specifically, we used the Bridges computer cluster, which is an NSF-funded system at the Pittsburgh Supercomputing Center (PSC).
Funding Information:
This research was supported by a contract with the Department of Fisheries and Oceans Canada, Center for Offshore Oil and Gas Exploration Research, and through a grant from the Multi-Partner Research Initiative under Grant Number MECTS-#3939073-v1-OFSCP. However, no official endorsement should be implied by these entities. This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation (NSF) Grant Number TG-BCS190002. Specifically, we used the Bridges computer cluster, which is an NSF-funded system at the Pittsburgh Supercomputing Center (PSC).
Publisher Copyright:
© 2020, Springer Nature B.V.
PY - 2020/12
Y1 - 2020/12
N2 - The dispersion (transport and breakup) of oil droplets under breaking waves is essential for evaluating the impact of oil spills on the environment, and for designing countermeasures. In this part of the work (Part I), the hydrodynamics of a wave breaker in a 1.0 m deep tank obtained experimentally by Rapp and Melville (Philos Trans R Soc Lond A Math Phys Eng Sci 331(1622):735–800, 1990) using the dispersive focusing method was investigated numerically using Reynold-averaged Navier–Stokes (RANS) within the CFD code ANSYS Fluent. The renormalization group (RNG) k–ε turbulence closure model was adopted to simulate wave turbulence, and the transient water–air interface was captured using volume of fluid (VOF) method. The simulated surface excursion and velocity fields matched closely the experimental observations during wave breaking. The energy dissipation of the wave crest showed good agreement with recent laboratory work and numerical simulations through evaluating the breaking parameter. The RANS approach was able to reproduce the turbulent kinetic energy field engendered by the breakers and simulated the residual turbulence within about two wave periods after the passage of the wave train. The VOF scheme Compressive provided a better agreement with the observation than the Geo-reconstruct scheme. The approach herein suggests that RANS method coupled with VOF in ANSYS Fluent is capable of capturing the major hydrodynamic forces and turbulence, and thus could be used to predict environmental processes within the breaking waves such as oil droplet formation and transport.
AB - The dispersion (transport and breakup) of oil droplets under breaking waves is essential for evaluating the impact of oil spills on the environment, and for designing countermeasures. In this part of the work (Part I), the hydrodynamics of a wave breaker in a 1.0 m deep tank obtained experimentally by Rapp and Melville (Philos Trans R Soc Lond A Math Phys Eng Sci 331(1622):735–800, 1990) using the dispersive focusing method was investigated numerically using Reynold-averaged Navier–Stokes (RANS) within the CFD code ANSYS Fluent. The renormalization group (RNG) k–ε turbulence closure model was adopted to simulate wave turbulence, and the transient water–air interface was captured using volume of fluid (VOF) method. The simulated surface excursion and velocity fields matched closely the experimental observations during wave breaking. The energy dissipation of the wave crest showed good agreement with recent laboratory work and numerical simulations through evaluating the breaking parameter. The RANS approach was able to reproduce the turbulent kinetic energy field engendered by the breakers and simulated the residual turbulence within about two wave periods after the passage of the wave train. The VOF scheme Compressive provided a better agreement with the observation than the Geo-reconstruct scheme. The approach herein suggests that RANS method coupled with VOF in ANSYS Fluent is capable of capturing the major hydrodynamic forces and turbulence, and thus could be used to predict environmental processes within the breaking waves such as oil droplet formation and transport.
KW - Computational fluid dynamics
KW - Deep-water plunging breaker
KW - Dispersive focusing method
KW - RANS method
KW - Volume of fluid method
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U2 - 10.1007/s10652-020-09753-7
DO - 10.1007/s10652-020-09753-7
M3 - Article
AN - SCOPUS:85086726383
SN - 1567-7419
VL - 20
SP - 1527
EP - 1551
JO - Environmental Fluid Mechanics
JF - Environmental Fluid Mechanics
IS - 6
ER -