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Journal of hydraulic research |
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Ajouter le résultat dans votre panierHydraulic determinism as a constraint on the evolution of organisms and ecosystems / Sally E. Thompson in Journal of hydraulic research, Vol. 50 N° 6 (Novembre/Décembre 2012)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 547-557
Titre : Hydraulic determinism as a constraint on the evolution of organisms and ecosystems Type de document : texte imprimé Auteurs : Sally E. Thompson, Auteur ; Gabriel G. Katul, Auteur Année de publication : 2013 Article en page(s) : pp. 547-557 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Biological fluid dynamics Flow–biota interactions Overland flows Shallow flows Vegetation Résumé : The interaction between plant hydraulics and plant structure was documented by Leonardo da Vinci, and its importance as a regulator of vegetation and ecosystem function remains of vital contemporary interest. It is proposed that hydraulics deterministically influence plant structure and function. This vision paper explores some aspects of the role of hydraulics in plant function, with a focus on the regulation of plant stomata and xylem water potentials, the morphology of branching networks in vines and trees, and the spatial organization of vegetation at landscape scales. Outstanding challenges include mechanistic and boundary condition descriptions of specific processes, the need to accommodate multiple spatial and temporal scales that do not lend themselves to statistical treatment and the self-referential nature of Darwinian evolution itself. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.732969 [article] Hydraulic determinism as a constraint on the evolution of organisms and ecosystems [texte imprimé] / Sally E. Thompson, Auteur ; Gabriel G. Katul, Auteur . - 2013 . - pp. 547-557.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 547-557
Mots-clés : Biological fluid dynamics Flow–biota interactions Overland flows Shallow flows Vegetation Résumé : The interaction between plant hydraulics and plant structure was documented by Leonardo da Vinci, and its importance as a regulator of vegetation and ecosystem function remains of vital contemporary interest. It is proposed that hydraulics deterministically influence plant structure and function. This vision paper explores some aspects of the role of hydraulics in plant function, with a focus on the regulation of plant stomata and xylem water potentials, the morphology of branching networks in vines and trees, and the spatial organization of vegetation at landscape scales. Outstanding challenges include mechanistic and boundary condition descriptions of specific processes, the need to accommodate multiple spatial and temporal scales that do not lend themselves to statistical treatment and the self-referential nature of Darwinian evolution itself. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.732969
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 558-575
Titre : A depth-averaged 2D shallow water model for breaking and non-breaking long waves affected by rigid vegetation Type de document : texte imprimé Auteurs : Wu, Weiming, Auteur ; Reza Marsooli, Auteur Année de publication : 2013 Article en page(s) : pp. 558-575 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Approximate Riemann solver Breaking waves Depth-averaged two-dimensional model Finite-volume method Long waves Rigid vegetation Résumé : This paper presents a depth-averaged two-dimensional shallow water model for simulating long waves in vegetated water bodies under breaking and non-breaking conditions. The effects of rigid vegetation are modelled in the form of drag and inertia forces as sink terms in the momentum equations. The drag coefficient is treated as a calibrated bulk constant and also determined using two empirical formulas as functions of stem Reynolds number, Froude number, and vegetation volume fraction. The governing equations are solved using an explicit finite-volume method based on rectangular mesh with the Harten, Lax, and van Leer approximate Riemann solver with second-order piecewise linear reconstruction for the streamwise convection fluxes, a second-order upwind scheme for the lateral convection fluxes, and a stable centred difference scheme for the water surface gradient terms. The model was tested using five laboratory experiments, including steady flow in a flume with alternate vegetation zones, solitary wave in a vegetated flatbed flume, long-wave runup on a partially-vegetated sloping beach, the dam-break wave overtopping an obstacle, and breaking the solitary wave on a sloping beach. The computed water levels, flow velocities, wave heights, and runups are in generally good agreement with experimental observations. The model was then applied to assess the hydrodynamic effectiveness and limitations of vegetation in coastal and river protection. It is shown that vegetation along the coastal shoreline has a positive benefit in reducing wave runup on sloping beaches, whereas vegetation in open channels causes conflicting impacts: reducing inundation in the downstream areas, but increasing flood risk in a certain distance upstream. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.734534 [article] A depth-averaged 2D shallow water model for breaking and non-breaking long waves affected by rigid vegetation [texte imprimé] / Wu, Weiming, Auteur ; Reza Marsooli, Auteur . - 2013 . - pp. 558-575.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 558-575
Mots-clés : Approximate Riemann solver Breaking waves Depth-averaged two-dimensional model Finite-volume method Long waves Rigid vegetation Résumé : This paper presents a depth-averaged two-dimensional shallow water model for simulating long waves in vegetated water bodies under breaking and non-breaking conditions. The effects of rigid vegetation are modelled in the form of drag and inertia forces as sink terms in the momentum equations. The drag coefficient is treated as a calibrated bulk constant and also determined using two empirical formulas as functions of stem Reynolds number, Froude number, and vegetation volume fraction. The governing equations are solved using an explicit finite-volume method based on rectangular mesh with the Harten, Lax, and van Leer approximate Riemann solver with second-order piecewise linear reconstruction for the streamwise convection fluxes, a second-order upwind scheme for the lateral convection fluxes, and a stable centred difference scheme for the water surface gradient terms. The model was tested using five laboratory experiments, including steady flow in a flume with alternate vegetation zones, solitary wave in a vegetated flatbed flume, long-wave runup on a partially-vegetated sloping beach, the dam-break wave overtopping an obstacle, and breaking the solitary wave on a sloping beach. The computed water levels, flow velocities, wave heights, and runups are in generally good agreement with experimental observations. The model was then applied to assess the hydrodynamic effectiveness and limitations of vegetation in coastal and river protection. It is shown that vegetation along the coastal shoreline has a positive benefit in reducing wave runup on sloping beaches, whereas vegetation in open channels causes conflicting impacts: reducing inundation in the downstream areas, but increasing flood risk in a certain distance upstream. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.734534
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 576-586
Titre : Plane dike-breach due to overtopping : Effects of sediment, dike height and discharge Type de document : texte imprimé Auteurs : Lukas Schmocker, Auteur ; Willi H. Hager, Auteur Année de publication : 2013 Article en page(s) : pp. 576-586 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Breach discharge Dike-breach Erosion Hydraulic modelling Overtopping Résumé : Due to increased flood discharges during the past years, overtopping of dikes and earthen embankments has caused large damages to the surrounding infrastructure and the environment. Despite the numerous dike breaches and the high damage potential, the dike-breach process is still only poorly understood. Therefore, hydraulic model tests were conducted to investigate the main features of the plane dike-breach due to overtopping. The temporal dike-breach progress was optically recorded allowing for a detailed analysis of the sediment and water surfaces. The results indicate a decisive effect of the sediment diameter on the breach process. A systematic variation of the dike dimension, the sediment diameter and the inflow discharge resulted in basic findings relative to the breach discharge and the dike degradation. The governing parameters of this dike-breach process include the dike height, the grain size and the critical flow depth. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.713034 [article] Plane dike-breach due to overtopping : Effects of sediment, dike height and discharge [texte imprimé] / Lukas Schmocker, Auteur ; Willi H. Hager, Auteur . - 2013 . - pp. 576-586.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 576-586
Mots-clés : Breach discharge Dike-breach Erosion Hydraulic modelling Overtopping Résumé : Due to increased flood discharges during the past years, overtopping of dikes and earthen embankments has caused large damages to the surrounding infrastructure and the environment. Despite the numerous dike breaches and the high damage potential, the dike-breach process is still only poorly understood. Therefore, hydraulic model tests were conducted to investigate the main features of the plane dike-breach due to overtopping. The temporal dike-breach progress was optically recorded allowing for a detailed analysis of the sediment and water surfaces. The results indicate a decisive effect of the sediment diameter on the breach process. A systematic variation of the dike dimension, the sediment diameter and the inflow discharge resulted in basic findings relative to the breach discharge and the dike degradation. The governing parameters of this dike-breach process include the dike height, the grain size and the critical flow depth. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.713034
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 587-598
Titre : Numerical modelling of non-cohesive embankment breach with the dual-mesh approach Type de document : texte imprimé Auteurs : Christian Volz, Auteur ; Patric Rousselot, Auteur ; David Vetsch, Auteur Année de publication : 2013 Article en page(s) : pp. 587-598 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Dual-mesh Embankment breach Overtopping Sediment transport Shallow-water equation Slope failure Résumé : The numerical model BASEMENT, based on the two-dimensional shallow-water equations, is applied to breaching processes of non-cohesive earth embankments due to overtopping. The governing equations are solved using an explicit finite-volume method combined with a Godunov-type approach. For spatial discretization, a mass-conserving dual-mesh approach with separate, unstructured meshes for hydrodynamic and sediment computations is developed allowing for accurate terrain representation. The surface erosion is modelled with the Exner and sorting equations for multiple grain classes in combination with empirical bed-load transport formulas and advection–diffusion equations for suspended-load transport. Additionally, the lateral breach widening caused by gravitationally-induced slope failures is considered using a novel algorithm adapted for unstructured grids. The model is successfully applied to two recent laboratory experiments including plane and spatial dike breaches, and a field-scale embankment breach. Detailed comparisons between measured and simulated laboratory spatial breach formations confirm the basic model assumptions. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.732970 [article] Numerical modelling of non-cohesive embankment breach with the dual-mesh approach [texte imprimé] / Christian Volz, Auteur ; Patric Rousselot, Auteur ; David Vetsch, Auteur . - 2013 . - pp. 587-598.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 587-598
Mots-clés : Dual-mesh Embankment breach Overtopping Sediment transport Shallow-water equation Slope failure Résumé : The numerical model BASEMENT, based on the two-dimensional shallow-water equations, is applied to breaching processes of non-cohesive earth embankments due to overtopping. The governing equations are solved using an explicit finite-volume method combined with a Godunov-type approach. For spatial discretization, a mass-conserving dual-mesh approach with separate, unstructured meshes for hydrodynamic and sediment computations is developed allowing for accurate terrain representation. The surface erosion is modelled with the Exner and sorting equations for multiple grain classes in combination with empirical bed-load transport formulas and advection–diffusion equations for suspended-load transport. Additionally, the lateral breach widening caused by gravitationally-induced slope failures is considered using a novel algorithm adapted for unstructured grids. The model is successfully applied to two recent laboratory experiments including plane and spatial dike breaches, and a field-scale embankment breach. Detailed comparisons between measured and simulated laboratory spatial breach formations confirm the basic model assumptions. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.732970
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 599-611
Titre : Two-dimensional depth-averaged finite volume model for unsteady turbulent flow Type de document : texte imprimé Auteurs : Chunshui Yu, Auteur ; Jennifer Duan, Auteur Année de publication : 2013 Article en page(s) : pp. 599-611 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Cartesian cut-cell method Depth-averaged RANS equation HLLC Riemann solver k−ϵturbulence model MUSCL scheme TVD Runge–Kutta scheme Well-balanced scheme Wet–dry front capturing method Résumé : A two-dimensional (2D) depth-averaged model is developed for simulating unsteady turbulent shallow-water flows with dry–wet fronts (e.g. dam-break flow). The model is based on 2D depth-averaged Reynolds-averaged Navier stokes equations coupled with the k−ϵ turbulence model. The high-resolution MUSCL scheme (monotone upstream-centred schemes for conservation laws) is implemented to minimize numerical diffusions. A novel augmented Harten–Lax–van Leer-contact Riemann solver is used to solve the governing equations simultaneously. A body-fitted mesh is generated by using the Cartesian cut-cell method to accommodate irregular boundaries. The model is tested against two laboratory experiments to examine whether or not turbulence model is essential for simulating unsteady turbulent flow. The results show that the addition of the k−ϵ turbulence model significantly improves the modelling results at places of strong turbulence activities. To further improve the results, a more accurate turbulence model for unsteady flow and dispersion terms in the momentum equations is needed. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.730556 [article] Two-dimensional depth-averaged finite volume model for unsteady turbulent flow [texte imprimé] / Chunshui Yu, Auteur ; Jennifer Duan, Auteur . - 2013 . - pp. 599-611.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 599-611
Mots-clés : Cartesian cut-cell method Depth-averaged RANS equation HLLC Riemann solver k−ϵturbulence model MUSCL scheme TVD Runge–Kutta scheme Well-balanced scheme Wet–dry front capturing method Résumé : A two-dimensional (2D) depth-averaged model is developed for simulating unsteady turbulent shallow-water flows with dry–wet fronts (e.g. dam-break flow). The model is based on 2D depth-averaged Reynolds-averaged Navier stokes equations coupled with the k−ϵ turbulence model. The high-resolution MUSCL scheme (monotone upstream-centred schemes for conservation laws) is implemented to minimize numerical diffusions. A novel augmented Harten–Lax–van Leer-contact Riemann solver is used to solve the governing equations simultaneously. A body-fitted mesh is generated by using the Cartesian cut-cell method to accommodate irregular boundaries. The model is tested against two laboratory experiments to examine whether or not turbulence model is essential for simulating unsteady turbulent flow. The results show that the addition of the k−ϵ turbulence model significantly improves the modelling results at places of strong turbulence activities. To further improve the results, a more accurate turbulence model for unsteady flow and dispersion terms in the momentum equations is needed. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.730556
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 612-622
Titre : A localized differential quadrature model for moving boundary shallow water flows Type de document : texte imprimé Auteurs : Ali Mahdavi, Auteur ; M. Reza Hashemi, Auteur ; Nasser Talebbeydokhti, Auteur Année de publication : 2013 Article en page(s) : pp. 612-622 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Lagrangian–Eulerian mapping Localized DQM Moving shoreline Time integration Wave run-up Résumé : This work presents a novel numerical solution of nonlinear shallow water equations involving moving waterlines. A hybrid Lagrangian–Eulerian mapping technique was proposed to account for two simultaneous shorelines fluctuating over dry beds. In the numerical model developed in this study, the local differential quadrature method approximated the spatial derivatives and the real-time Adams–Moulton algorithm was implemented for time-marching. It was concluded that, despite using significantly small number of grid points, the model leads to accurate results compared with an existing finite volume model which demands comparatively finer meshes. Further, highly accurate predictions of the position and velocity of the moving shorelines were obtained which is considered as the key advantage of the Lagrangian shoreline tracking. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.721141 [article] A localized differential quadrature model for moving boundary shallow water flows [texte imprimé] / Ali Mahdavi, Auteur ; M. Reza Hashemi, Auteur ; Nasser Talebbeydokhti, Auteur . - 2013 . - pp. 612-622.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 612-622
Mots-clés : Lagrangian–Eulerian mapping Localized DQM Moving shoreline Time integration Wave run-up Résumé : This work presents a novel numerical solution of nonlinear shallow water equations involving moving waterlines. A hybrid Lagrangian–Eulerian mapping technique was proposed to account for two simultaneous shorelines fluctuating over dry beds. In the numerical model developed in this study, the local differential quadrature method approximated the spatial derivatives and the real-time Adams–Moulton algorithm was implemented for time-marching. It was concluded that, despite using significantly small number of grid points, the model leads to accurate results compared with an existing finite volume model which demands comparatively finer meshes. Further, highly accurate predictions of the position and velocity of the moving shorelines were obtained which is considered as the key advantage of the Lagrangian shoreline tracking. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.721141
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 623-630
Titre : Supercritical flow profile improvement by means of a convex corner at a bend inlet Type de document : texte imprimé Auteurs : Mohammad Reza Jaefarzadeh, Auteur ; Ali Reza Shamkhalchian, Auteur ; Mahboobeh Jomehzadeh, Auteur Année de publication : 2013 Article en page(s) : pp. 623-630 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Bend Convex corner Oblique wave Roe's method Supercritical flow Transition Résumé : A novel method for the reduction of wave height along the outer wall of a bend is introduced by adding a convex corner to the inner bend wall. The negative waves emitted from the convex corner are then superimposed on the positive waves caused by the outer bend wall. The interaction of positive and negative waves transforms the original single-humped wave along the outer wall to a lower double-humped wave. The optimum expansion angle of the convex corner is a function of the offset width to the bend width, the radius of curvature to the bend width, and the approach flow Froude number. Numerical studies indicate that the convex corner may be used in a wide range of safe conditions free from cavitation damage. By using an optimized convex corner, the wave height may be reduced between 10 and 45%. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.719200 [article] Supercritical flow profile improvement by means of a convex corner at a bend inlet [texte imprimé] / Mohammad Reza Jaefarzadeh, Auteur ; Ali Reza Shamkhalchian, Auteur ; Mahboobeh Jomehzadeh, Auteur . - 2013 . - pp. 623-630.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 623-630
Mots-clés : Bend Convex corner Oblique wave Roe's method Supercritical flow Transition Résumé : A novel method for the reduction of wave height along the outer wall of a bend is introduced by adding a convex corner to the inner bend wall. The negative waves emitted from the convex corner are then superimposed on the positive waves caused by the outer bend wall. The interaction of positive and negative waves transforms the original single-humped wave along the outer wall to a lower double-humped wave. The optimum expansion angle of the convex corner is a function of the offset width to the bend width, the radius of curvature to the bend width, and the approach flow Froude number. Numerical studies indicate that the convex corner may be used in a wide range of safe conditions free from cavitation damage. By using an optimized convex corner, the wave height may be reduced between 10 and 45%. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.719200
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 631-636
Titre : Hydraulic behaviour of junction manholes under supercritical flow conditions Type de document : texte imprimé Auteurs : Juan Saldarriaga, Auteur ; Nataly Bermúdez, Auteur ; Diva P. Rubio, Auteur Année de publication : 2013 Article en page(s) : pp. 631-636 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Junction manhole Physical model Sewer system Supercritical flow Wave Résumé : A research undertaken to determine the behaviour of supercritical flow in sewer junction manholes is summarized with an emphasis on small discharge structures. A physical model was implemented to test various configurations. The independent variables representing the characteristics of approach flow, include the Froude number and the filling ratio. The dependent variables representing the characteristics of location and dimension of flow are the various standing wave patterns, namely the start and end locations and the wave heights. The analysis of previous variables allows for an identification of the prevailing wave types and the conditions under which they form. A number of design recommendations are also developed, thereby contributing to the hydraulic problem and the understanding of this particular flow type in sewer junction manholes. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.716252 [article] Hydraulic behaviour of junction manholes under supercritical flow conditions [texte imprimé] / Juan Saldarriaga, Auteur ; Nataly Bermúdez, Auteur ; Diva P. Rubio, Auteur . - 2013 . - pp. 631-636.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 631-636
Mots-clés : Junction manhole Physical model Sewer system Supercritical flow Wave Résumé : A research undertaken to determine the behaviour of supercritical flow in sewer junction manholes is summarized with an emphasis on small discharge structures. A physical model was implemented to test various configurations. The independent variables representing the characteristics of approach flow, include the Froude number and the filling ratio. The dependent variables representing the characteristics of location and dimension of flow are the various standing wave patterns, namely the start and end locations and the wave heights. The analysis of previous variables allows for an identification of the prevailing wave types and the conditions under which they form. A number of design recommendations are also developed, thereby contributing to the hydraulic problem and the understanding of this particular flow type in sewer junction manholes. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.716252
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 637-641
Titre : Scour depths near coastal structures due to the 2011 Tohoku Tsunami Type de document : texte imprimé Auteurs : Jeremy D. Bricker, Auteur ; Mathew Francis, Auteur ; Akihiko Nakayama, Auteur Année de publication : 2013 Article en page(s) : pp. 637-641 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Foundation Overtopping Plunge pool Scour Seawall Tsunami Résumé : Herein, scour depth measurements are compared with theoretical and empirical estimates obtained at four sites in Chiba and Fukushima Prefectures impacted by the 2011 Tohoku Tsunami. At sites where scour was caused by either floodwall overtopping or acceleration of flow around building foundation footings, results of published scour experiments are compared with measured scour depths. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.721015 [article] Scour depths near coastal structures due to the 2011 Tohoku Tsunami [texte imprimé] / Jeremy D. Bricker, Auteur ; Mathew Francis, Auteur ; Akihiko Nakayama, Auteur . - 2013 . - pp. 637-641.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 637-641
Mots-clés : Foundation Overtopping Plunge pool Scour Seawall Tsunami Résumé : Herein, scour depth measurements are compared with theoretical and empirical estimates obtained at four sites in Chiba and Fukushima Prefectures impacted by the 2011 Tohoku Tsunami. At sites where scour was caused by either floodwall overtopping or acceleration of flow around building foundation footings, results of published scour experiments are compared with measured scour depths. ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.721015
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 642-643
Titre : Discharge coefficient for free and submerged flow over piano key weirs Type de document : texte imprimé Auteurs : Michael Pfister, Auteur ; Sebastien Erpicum, Auteur ; Olivier Machiels, Auteur Année de publication : 2013 Article en page(s) : pp. 642-643 Note générale : Hydraulique Langues : Anglais (eng) Note de contenu : Discussion ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.728025 [article] Discharge coefficient for free and submerged flow over piano key weirs [texte imprimé] / Michael Pfister, Auteur ; Sebastien Erpicum, Auteur ; Olivier Machiels, Auteur . - 2013 . - pp. 642-643.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 642-643
Note de contenu : Discussion ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.728025
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 646-648
Titre : Bubble plume modelling with new functional relationships Type de document : texte imprimé Auteurs : Poojitha D. Yapa, Auteur ; Anusha L. Dissanayake, Auteur Année de publication : 2013 Article en page(s) : pp. 646-648 Note générale : Hydraulique Langues : Anglais (eng) Note de contenu : Discussion ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.734051 [article] Bubble plume modelling with new functional relationships [texte imprimé] / Poojitha D. Yapa, Auteur ; Anusha L. Dissanayake, Auteur . - 2013 . - pp. 646-648.
Hydraulique
Langues : Anglais (eng)
in Journal of hydraulic research > Vol. 50 N° 6 (Novembre/Décembre 2012) . - pp. 646-648
Note de contenu : Discussion ISSN : 0022-1686 En ligne : http://www.tandfonline.com/doi/full/10.1080/00221686.2012.734051
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