| ATTRIBUTE | VALUE |
|---|---|
| type | C |
| database id | 3817 |
| title | |
| authors | |
| affiliations | |
| year | 1995 |
| series | Archives of Hydro-Engineering and Environmental Mechanics |
| issue | Vol. 42, No. 3-4 |
| notes | na okładce mylnie podany jako Vol. 43, No. 3-4 |
| publisher | Wydawnictwo IBW PAN |
| place | Gdańsk |
| attributes | [published] [reviewed] [scientific] [international reach] |
| language | en |
| ATTRIBUTE | VALUE |
|---|---|
| type | A |
| database id | 5091 |
| title | Hydraulic consequences of landfill-liner damage |
| authors | Jerzy M. Sawicki |
| pages | 19 — 29 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem42no34str019.pdf |
| affiliations | |
| abstracts | The body of each landfill or waste dump must be isolated from the subsoil. As the main element of the insulation a liner, made of synthetic foil, put on a clay layer, is very often applied. During the landfill exploitation the liner may be damaged. A puncture in this layer is a serious threat to groundwater quality. The paper deals with the hydraulic analysis of a situation after insulation damage. The velocity field of percolating water is described by the Laplace equation. The results of calculations have been compared with those of a laboratory scale experiment. After discussion of these results, some practical conclusions have been formulated. |
| attributes | [reviewed] [scientific] |
| language | en |
| ATTRIBUTE | VALUE |
|---|---|
| type | A |
| database id | 5090 |
| title | Sediment transport in a river under one-dimensional and unsteady flow conditions |
| authors | Wojciech Mill |
| pages | 3 — 18 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem42no34str003.pdf |
| affiliations | |
| abstracts | An attempt to describe the one-dimensional sediment transport in a river under unsteady flow conditions is presented. A thesis was formulated that the influence of turbulent dispersion of sediment in the main direction of the river flow is of significant importance in prognosing the transport of suspended matter in practical aspects, especially as regards protection of water intakes and efficient operation of water treatment plants. The transport of suspended matter is described here by parabolic differential equation. A mathematical model has been developed and applied to forecasting sediment concentration changes during freshets in the outlet cross section of the Vistula River to Goczałkowice Reservoir. The results of field studies and numerical simulations by use of the developed model revealed that the model accuracy is satisfactory for its practical applications in water intake protection against the freshet effects. Simultaneously the assumed thesis was confirmed that the sediment transport in the river under unsteady flow is of a dispersive nature. |
| attributes | [reviewed] [scientific] |
| language | en |
| ATTRIBUTE | VALUE |
|---|---|
| type | A |
| database id | 5092 |
| title | Investigation into the hydraulic characteristics of channels with flood plains |
| authors | Janusz Kubrak, Armand Żbikowski |
| pages | 31 — 50 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem42no34str031.pdf |
| affiliations | |
| abstracts | Some experimental results of flow on a straight and smooth open channel with symmetrically complex cross-section ("compound" or "two-stage" channel) are presented from the Hydraulic Laboratory of Department of Hydraulic Structures at the Warsaw Agricultural University. These results are used to assess the performance of several discharge calculation methods. The analyses consist of calculation methods, and consist of comparisons between the measured and calculated values for discharge and friction factors at vertical plains of the interfaces between the deep and shallow part of the channel. This article presents the analyses of the open channel flow executed to test the applicability of some existing formulas, methods and other approaches to estimating the discharge capacities of compound channels. |
| attributes | [reviewed] [scientific] |
| language | en |
| ATTRIBUTE | VALUE |
|---|---|
| type | A |
| database id | 5095 |
| title | Influence of temperature and total water content on the unfrozen water content below 0 C in three model soils |
| authors | Tomasz Kozłowski |
| pages | 51 — 70 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem42no34str051.pdf |
| affiliations | |
| abstracts | A version of the calorimetric method of estimating the unfrozen water content in frozen soils, has been formulated. The method takes into account a more strict description of the parameters of the balance equation, particularly the specific heat of dry soil as a function of temperature. Measurements of the specific heat of soils dried at 110°C and 220°C have been taken. In three soils investigated (bentonite from Chmielnik BCh, bentonite MAD BM and kaolin Sedlec KS), the specific heat decreases linearly with decreasing temperature.In three model soils investigated the unfrozen water content u at fixed total water content is a non-decreasing function of temperature. Instead, the unfrozen water content at a fixed temperature is a decreasing function of the total water content. A concept of limiting unfrozen water content uL has been introduced. The value of uL is, at given temperature, the maximum total water content at which ice crystals are absent in the system. |
| attributes | [reviewed] [scientific] |
| language | en |
| ATTRIBUTE | VALUE |
|---|---|
| type | A |
| database id | 3818 |
| title | Energy dissipation in a saturated porous half-space under a vibrating rigid block |
| authors | Staroszczyk R. |
| pages | 71 — 92 |
| full text link | http://www.ibwpan.gda.pl/storage/app/media/ahem/ahem42no34str071.pdf |
| affiliations | |
| abstracts | The paper deals with the problem of time harmonic vibrations of a rigid block on a water-saturated sand subsoil. The main interest is focused on the phenomenon of mechanical energy dissipation in the two-phase medium due to the flow of the viscid fluid through the pores of the solid. The behaviour of the saturated poro-elastic medium is studied on the basis of Biot's dynamic theory of consolidation. The problem is solved in a discrete way by using the finite element method. In order to confine the analysis to a finite domain, artificial boundaries are introduced, on which approximate absorbing conditions for Biot's medium are applied. Numerical results, obtained for three types of the block vibrations, illustrate the distribution of energy dissipation density in the subsoil. The influence of the frequency of oscillations and the sand permeability on the energy dissipation is investigated. Some results related to the problem of wave energy transmission are also presented. |
| attributes | [reviewed] [scientific] |
| language | en |
| points | 6 |