Boundary-layer hydrodynamics and bedload sediment transport in oscillating water tunnels
Oscillating water tunnels are experimental facilities commonly used in coastal engineering research. They are intended to reproduce near-bed hydrodynamic and sediment transport phenomena at a realistic scale. In an oscillating water tunnel, a piston generates an oscillatory motion that propagates al...
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| Format: | Article |
| Language: | en_US |
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Cambridge University Press
2012
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| Online Access: | http://hdl.handle.net/1721.1/69678 https://orcid.org/0000-0002-6984-6499 |
| _version_ | 1826213416877948928 |
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| author | Gonzalez-Rodriguez, David Madsen, Ole S. |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Gonzalez-Rodriguez, David Madsen, Ole S. |
| author_sort | Gonzalez-Rodriguez, David |
| collection | MIT |
| description | Oscillating water tunnels are experimental facilities commonly used in coastal engineering research. They are intended to reproduce near-bed hydrodynamic and sediment transport phenomena at a realistic scale. In an oscillating water tunnel, a piston generates an oscillatory motion that propagates almost instantaneously to the whole tunnel; consequently, flow is uniform along the tunnel, unlike the propagating wave motion in the sea or in a wave flume. This results in subtle differences between the boundary-layer hydrodynamics of an oscillating water tunnel and of a propagating wave, which may have a significant effect in the resulting sediment transport. In this paper, we present a zeroth-order analytical model of the turbulent boundary-layer hydrodynamics in an oscillating water tunnel. By using a time-varying eddy viscosity and by accounting for the constraints arising from the tunnel's geometry, the model predicts the oscillating water tunnel hydrodynamics and yields analytical expressions to compute bed shear stresses for asymmetric and skewed waves, both in the absence or presence of an imposed current. These expressions are applied to successfully quantify bedload sediment transport in oscillating water tunnel experiments. |
| first_indexed | 2024-09-23T15:48:45Z |
| format | Article |
| id | mit-1721.1/69678 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T15:48:45Z |
| publishDate | 2012 |
| publisher | Cambridge University Press |
| record_format | dspace |
| spelling | mit-1721.1/696782022-10-02T04:16:17Z Boundary-layer hydrodynamics and bedload sediment transport in oscillating water tunnels Gonzalez-Rodriguez, David Madsen, Ole S. Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Madsen, Ole S. Madsen, Ole S. Gonzalez-Rodriguez, David Oscillating water tunnels are experimental facilities commonly used in coastal engineering research. They are intended to reproduce near-bed hydrodynamic and sediment transport phenomena at a realistic scale. In an oscillating water tunnel, a piston generates an oscillatory motion that propagates almost instantaneously to the whole tunnel; consequently, flow is uniform along the tunnel, unlike the propagating wave motion in the sea or in a wave flume. This results in subtle differences between the boundary-layer hydrodynamics of an oscillating water tunnel and of a propagating wave, which may have a significant effect in the resulting sediment transport. In this paper, we present a zeroth-order analytical model of the turbulent boundary-layer hydrodynamics in an oscillating water tunnel. By using a time-varying eddy viscosity and by accounting for the constraints arising from the tunnel's geometry, the model predicts the oscillating water tunnel hydrodynamics and yields analytical expressions to compute bed shear stresses for asymmetric and skewed waves, both in the absence or presence of an imposed current. These expressions are applied to successfully quantify bedload sediment transport in oscillating water tunnel experiments. Singapore-MIT Alliance for Research and Technology (Center for Environmental Sensing and Modeling (CENSAM)) Singapore. National Research Foundation 2012-03-16T15:12:26Z 2012-03-16T15:12:26Z 2011-01 2010-08 Article http://purl.org/eprint/type/JournalArticle 0022-1120 1469-7645 http://hdl.handle.net/1721.1/69678 Gonzalez-Rodriguez, David, and Ole Secher Madsen. “Boundary-layer Hydrodynamics and Bedload Sediment Transport in Oscillating Water Tunnels.” Journal of Fluid Mechanics 667 (2010): 48–84. © Cambridge University Press 2010. https://orcid.org/0000-0002-6984-6499 en_US http://dx.doi.org/10.1017/S0022112010004337 Journal of Fluid Mechanics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Cambridge University Press Madsen via Ann Graham |
| spellingShingle | Gonzalez-Rodriguez, David Madsen, Ole S. Boundary-layer hydrodynamics and bedload sediment transport in oscillating water tunnels |
| title | Boundary-layer hydrodynamics and bedload sediment transport in oscillating water tunnels |
| title_full | Boundary-layer hydrodynamics and bedload sediment transport in oscillating water tunnels |
| title_fullStr | Boundary-layer hydrodynamics and bedload sediment transport in oscillating water tunnels |
| title_full_unstemmed | Boundary-layer hydrodynamics and bedload sediment transport in oscillating water tunnels |
| title_short | Boundary-layer hydrodynamics and bedload sediment transport in oscillating water tunnels |
| title_sort | boundary layer hydrodynamics and bedload sediment transport in oscillating water tunnels |
| url | http://hdl.handle.net/1721.1/69678 https://orcid.org/0000-0002-6984-6499 |
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