%0 Journal Article %1 Torres-Freyermuth20131019 %A Torres-Freyermuth, A. %A Puleo, J.A. %A Pokrajac, D. %D 2013 %I Blackwell Publishing Ltd %J Journal of Geophysical Research: Oceans %K 2013 from:erick007 %N 2 %P 1019-1033 %R 10.1002/jgrc.20074 %T Modeling swash-zone hydrodynamics and shear stresses on planar slopes using Reynolds-Averaged Navier-Stokes equations %U https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878939673&doi=10.1002%2fjgrc.20074&partnerID=40&md5=47946edcc2ffab6f1517943441e440b9 %V 118 %X 1 A numerical model solving the Reynolds-Averaged Navier-Stokes equations, with a volume of fluid-tracking scheme and turbulence closure, is employed for estimating hydrodynamics in the swash zone. Model results for run-up distance, water depth, and near-bed velocity are highly correlated (r2 > 0.97) with ensemble-averaged dam-break-driven swash data. Moreover, modeled bed shear stresses are within 20% of estimates derived from measured velocity profiles. Dam-break-driven swash simulations are conducted to determine the effect of foreshore characteristics (bed roughness and foreshore slope) on bore-induced swash-zone hydrodynamics and bed shear stresses. Numerical results revealed that the boundary layer vanishes during flow reversal, grows during the backwash, and becomes depth limited at the end of the swash cycle. In general, the uprush experiences larger shear stresses but for a shorter duration than the backwash. Some variability in this pattern is observed depending on the bed roughness, foreshore slope, and cross-slope location in the swash zone, implying that large spatial gradients in shear stresses can occur on the foreshore. The mean tangential force per unit area supplied to the bed is offshore directed for the simulated cases, with the exception of the mild-slope (1:25) cases, owing to the skewed nature of swash flows. The temporal evolution of the momentum balance inside the swash zone shows an important contribution to the total force from turbulence and advection at the early/final stage of the swash cycle, whereas the local acceleration does not appear to be a significant contribution. © 2013 American Geophysical Union. All Rights Reserved.

@article{Torres-Freyermuth20131019, abbrev_source_title = {J. Geophys. Res. C Oceans}, abstract = {1 A numerical model solving the Reynolds-Averaged Navier-Stokes equations, with a volume of fluid-tracking scheme and turbulence closure, is employed for estimating hydrodynamics in the swash zone. Model results for run-up distance, water depth, and near-bed velocity are highly correlated (r2 > 0.97) with ensemble-averaged dam-break-driven swash data. Moreover, modeled bed shear stresses are within 20% of estimates derived from measured velocity profiles. Dam-break-driven swash simulations are conducted to determine the effect of foreshore characteristics (bed roughness and foreshore slope) on bore-induced swash-zone hydrodynamics and bed shear stresses. Numerical results revealed that the boundary layer vanishes during flow reversal, grows during the backwash, and becomes depth limited at the end of the swash cycle. In general, the uprush experiences larger shear stresses but for a shorter duration than the backwash. Some variability in this pattern is observed depending on the bed roughness, foreshore slope, and cross-slope location in the swash zone, implying that large spatial gradients in shear stresses can occur on the foreshore. The mean tangential force per unit area supplied to the bed is offshore directed for the simulated cases, with the exception of the mild-slope (1:25) cases, owing to the skewed nature of swash flows. The temporal evolution of the momentum balance inside the swash zone shows an important contribution to the total force from turbulence and advection at the early/final stage of the swash cycle, whereas the local acceleration does not appear to be a significant contribution. © 2013 American Geophysical Union. All Rights Reserved.}, added-at = {2021-06-02T06:00:26.000+0200}, affiliation = {Laboratorio de Ingeniería y Procesos Costeros, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Sisal, Yucatán, Mexico; Ocean Engineering Laboratory, Center for Applied Coastal Research, Department of Civil and Environmental Engineering, Newark, DE, United States; School of Engineering, University of Aberdeen, King's College, Aberdeen, AB24 3UE, United Kingdom}, author = {Torres-Freyermuth, A. and Puleo, J.A. and Pokrajac, D.}, biburl = {https://www.bibsonomy.org/bibtex/2b698842780d4bd2b2024e59544698040/publ_del_lipc}, correspondence_address1 = {Torres-Freyermuth, A.; Laboratorio de Ingeniería y Procesos Costeros, , Sisal, Yucatán, Mexico; email: atorresf@ii.unam.mx}, document_type = {Article}, doi = {10.1002/jgrc.20074}, funding_details = {National Science FoundationNational Science Foundation, NSF, 0845004}, interhash = {3fb1ae5a753f8233b16eaeb171c96e27}, intrahash = {b698842780d4bd2b2024e59544698040}, issn = {21699291}, journal = {Journal of Geophysical Research: Oceans}, keywords = {2013 from:erick007}, language = {English}, number = 2, pages = {1019-1033}, publisher = {Blackwell Publishing Ltd}, source = {Scopus}, timestamp = {2021-06-23T06:32:12.000+0200}, title = {Modeling swash-zone hydrodynamics and shear stresses on planar slopes using Reynolds-Averaged Navier-Stokes equations}, url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84878939673&doi=10.1002%2fjgrc.20074&partnerID=40&md5=47946edcc2ffab6f1517943441e440b9}, volume = 118, year = 2013 }