| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 7346 |
| title | Practical application of 1-D sediment transport model |
| authors | Marta Łapuszek, Andre Paquier |
| pages | 245 — 260 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem54str245.pdf |
| keywords | mountain rivers, riverbed erosion, 1-D model |
| affiliations | - Institute of Water Engineering and Water Management, Cracow University of Technology, ul. Warszawska 24, 31-155 Cracow, Poland, e-mail: mlapuszek@iigw.pl
- Cemagref, Hydrology and Hydraulics Research Unit, 3 bis Quai Chauveau, CP220, 69336 Lyon Cedex 09, France, e-mail: andre.paquier@cemagref.fr
|
| abstracts | The aim of the paper is to present a numerical simulation of sediment transport in a mountainriver. Two one-dimensional sediment transport models: RubarBE and Metoda are appliedto predict variation of longitudinal bed profile along the river reach and changes in thecross-sectional geometry due to erosion or deposition of sediment. In the current paper,simulation of the sediment transport is applied for the experimental reach of the River Raba– a mountain tributary of the Vistula River. The reach is located from 81.829 km to 77.751km upstream from the Dobczyce Dam. This part of the river was completely changed dueto the project concerning the extension of the Kraków–Zakopane road, which is located nextto the Raba River. The results of simulation of riverbed evolution, before and after rivertraining carried out by both models, are analysed and discussed. |
| attributes | [reviewed] [scientific] |
| language | en |
| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 6637 |
| title | A Lagrangian finite element treatment of transient free-surface waves in compressible viscous fluids |
| authors | Staroszczyk R. |
| pages | 261 — 284 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem54str261.pdf |
| keywords | Newtonian viscous fluid, gravitational wave, transient problem, Lagrangian formulation, finite element method |
| affiliations | - Institute of Hydro-Engineering of the Polish Academy of Sciences, Kościerska 7, 80-328 Gdańsk, Poland, e-mail: rstar@ibwpan.gda.pl
|
| tasks | Z 1.3.2/2007: Zbadanie falowania wody za pomocą materialnej metody elementów skończonych |
| abstracts | In this paper the problem of transient gravitational wave propagation in a viscouscompressible fluid is investigated. The problem is formulated in the Lagrangian descriptionand is solved numerically by a finite element method. In computations either fixed in space ormoving meshes that follow the material fluid particles are used with the purpose to comparetheir numerical performance. As illustrations, results of numerical simulations carried outfor plane flows in a domain of simple geometry are presented. First, the finite elementresults are compared with available experimental data for the case of small-amplitude wavesin order to validate the numerical model. Then, the problem of large-amplitude transientwater wave propagation over a horizontal bottom, involving the wave reflection at a rigidwall, is considered. For the flow parameters typical of a laboratory flume, the evolution ofthe free-surface elevation and the time variations of the surface displacements at chosenlocations are shown for a range of different moving wall amplitudes and excitation times. |
| attributes | [reviewed] [scientific] |
| language | en |
| points | 4 |
| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 7347 |
| title | Representation of a built-up area in the numerical simulation of urban flash flooding |
| authors | Michał Szydłowski |
| pages | 285 — 298 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem54str285.pdf |
| keywords | numerical simulation, flash flooding, urban inundation, built-up area representation, building wall boundary condition |
| affiliations | - Gdańsk University of Technology, Faculty of Civil and Environmental Engineering, ul. Narutowicza 11/12, 80-952 Gdańsk, Poland, email: mszyd@pg.gda.pl
|
| abstracts | The paper concerns numerical simulation of rapidly varied water flow resulting from flashflood propagation in a built-up floodplain. As the mathematical model of free surface unsteadywater flow, the shallow water equations are assumed. In order to solve the equations,a numerical scheme of finite volume method is applied. For approximation of mass andmomentum fluxes, the Roe method is used. Two methods of built-up area representation ina numerical model are presented in the paper – exclusion of the buildings from the numericalmesh of flow area and substitution of the buildings with high friction zones. In order toassess the quality of the numerical results obtained using both methods, the flow in themodel city area with the building group representing a simplified town configuration wassimulated. The numerical results were examined against the experimental data available dueto laboratory depth measurements. The experiment of model city flooding was carried outin the hydraulic laboratory of Gdańsk University of Technology. Finally, the influence of thetype of the boundary conditions imposed on building walls on simulation results is studied. |
| attributes | [reviewed] [scientific] |
| language | en |
| ATTRIBUTE | VALUE |
|---|
| type | A |
| database id | 7348 |
| title | Compressibility of organic soils polluted with diesel oil |
| authors | Andrzej Olchawa, Maciej Kumor |
| pages | 299 — 307 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem54str299.pdf |
| keywords | organic soils, diesel oil, compression index, dielectric constant |
| affiliations | - University of Technology and Life Sciences in Bydgoszcz, ul. S. Kaliskiego 7, 85-796 Bydgoszcz, Poland, e-mail: andyolchwa@wp.pl
|
| abstracts | The paper presents results of experimental study on the compressibility of soils contaminatedby diesel oil from Żuławy region. The investigation results show that compressibility of thesoils increases with increasing diesel oil content. A significant increasing in compressionwas found when diesel oil content in soil exceeded 3%. The compression index Cc changesinversely to changes in the dielectrical constant of a porous medium. The index Cc forcontaminated organic soil can be estimated from the established compression index of “clean”soil and dielectric constant of the porous medium of polluted soil. |
| attributes | [reviewed] [scientific] |
| language | en |