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  • 1
    Electronic Resource
    Electronic Resource
    Effect of an impermeable inclusion in the underlying highly permeable pressurized horizon on the conditions of ground water in an irrigated layer of soil (1986)
    Springer
    Journal of applied mechanics and technical physics 27 (1986), S. 315-318 
    Details
    ISSN: 1573-8620
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The problem of plane, nonpressurized, steady-state filtration through a layer of soil into an underlying pressurized horizon, which contains an impermeable section at the top, with uniform infiltration on the free surface is solved in a hydro-dynamic formation. A constructive solution of the problem is given with the help of the method of P. Ya. Polubarinova-Kochina; representations are obtained for the characteristic dimensions of the flow scheme and the depression. The case of limiting flow — no head in the bottom, highly permeable layer — studied in [1] is noted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00910506
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  • 2
    Electronic Resource
    Electronic Resource
    Groundwater regime in a soil layer with seepage from a channel allowing for capillarity (1993)
    Springer
    Journal of mathematical sciences 63 (1993), S. 437-440 
    Details
    ISSN: 1573-8795
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract We obtain an exact hydrodynamic solution of the problem of steady plane seepage from a channel through a soil layer af finite thickness into an underlying drainage stratum. The solution allows far evaporation from the free surface and for capillarity of the soil. Unique solvability of the system of equations for the unknown mapping parameters is established. The seepage discharge from the channel and the capillary spread of wetness are determined as functions of the depth of the soil layer, the evaporation rate, and the capillarity of the soil. The numerical results are demonstrated by tables and graphs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01849526
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  • 3
    Electronic Resource
    Electronic Resource
    Seepage from shallow channels and irrigation furrows (1989)
    Springer
    Fluid dynamics 24 (1989), S. 80-85 
    Details
    ISSN: 1573-8507
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Two cases of two-dimensional steady seepage from broad channels and irrigation furrows through a layer of homogeneous isotropic soil into a highly permeable pressurized aquifer in the presence of soil capillarity are examined in the hydrodynamic formulation. A uniform method of solution in which the solution of the problem of seepage from an irrigation furrow can be obtained from the solution for a broad channel is given. The special and limiting cases studied in [1–3] and elsewhere are noted. Computer calculations are used to analyze the dependence of the rate of seepage from channels and irrigation furrows and the capillary spread on the profile and width of the channel or irrigation furrow, the thickness of the layer, the head and the capillarity of the soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01051482
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  • 4
    Electronic Resource
    Electronic Resource
    Some cases of seepage in dams with a vertical upstream face and base drainage (1991)
    Springer
    Fluid dynamics 26 (1991), S. 841-844 
    Details
    ISSN: 1573-8507
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01056784
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  • 5
    Electronic Resource
    Electronic Resource
    Some equations of the Fuchs class in hydro- and aeromechanics (1992)
    Springer
    Fluid dynamics 27 (1992), S. 603-607 
    Details
    ISSN: 1573-8507
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The analytic theory of linear differential equations of the Fuchs class makes it possible to consider a wide range of two-dimensional steady-state problems of the theory of jets, flow through porous media, gas dynamics, etc. Solutions of problems of finding the function that realizes the conformal mapping of the circular polygons occurring in complex flow velocity domains onto the auxiliary canonical domain reduce to such equations. For polygons with a large number of vertices, in the coefficients of these equations, in addition to the unknown affixes of the vertices, there also appear additional (so-called accessory) parameters, which are not completely determined by the position of the singular points of the equations and the exponents in them [1–3], so that the determination of the parameters is a very complicated task. It is shown that in a whole series of cases in which the polygon has angles that are multiples of π/2 and branch cuts (as is often encountered in hydro-, gas- and aeromechanics), the problem of determining the unknown parameters can be completely solved.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01051599
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  • 6
    Electronic Resource
    Electronic Resource
    Problem of percolation from an irrigation channel (1987)
    Springer
    Fluid dynamics 22 (1987), S. 255-259 
    Details
    ISSN: 1573-8507
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01052257
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  • 7
    Electronic Resource
    Electronic Resource
    Fresh water lenses formed by seepage from irrigation channels (1990)
    Springer
    Fluid dynamics 25 (1990), S. 580-584 
    Details
    ISSN: 1573-8507
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A two-dimensional model of a steady-state fresh water lens, formed above saline water as a result of mole irrigation, is investigated in the hydrodynamic formulation [1]. The corresponding boundaryvalue problem is solved by means of Kochina's method [1] based on the use of the analytical theory of linear differential equations. The results of numerical calculations are presented and the effect of the model parameters on the shape and size of the lens is analyzed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01049866
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  • 8
    Electronic Resource
    Electronic Resource
    Effect of an impermeable inclusion in an irrigated soil layer on seepage from a channel (1990)
    Springer
    Fluid dynamics 25 (1990), S. 708-713 
    Details
    ISSN: 1573-8507
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In [1] plane steady seepage from a channel through a soil layer into an underlying unpressurized formation with an impermeable inclusion at the top was investigated in the case of constant uniform infiltration to the free surface. The results of numerical calculations are presented and the effect of the physical parameters of the model on the principal seepage characteristics is analyzed. The limiting cases of flow in the absence of the following factors are considered: inclusion [2], channel [3], channel and backwater [4], and backwater and infiltration [5]. A related scheme, the solution for which is obtained from the relations established, but outside the range of the limitation for one of the mapping parameters, is studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01049540
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  • 9
    Electronic Resource
    Electronic Resource
    Flow in soils underlain by a highly permeable pressure horizon (1991)
    Springer
    Fluid dynamics 26 (1991), S. 238-243 
    Details
    ISSN: 1573-8507
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The seepage of water from a system of channels and irrigation furrows and its interaction with the ground water are investigated in relation to such factors as the capillarity of the soil and the evaporation from the free surface, and their combined effect on the flow structure is evaluated. On the basis of the results of computer calculations the dependence of the seepage rate and the capillary spread on the profile and width of the sources and the distance between them, the head, and the thickness of the soil layer is analyzed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01050146
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  • 10
    Electronic Resource
    Electronic Resource
    Analysis of systematic drainage of irrigated land underlain by saline water (1993)
    Springer
    Fluid dynamics 28 (1993), S. 209-213 
    Details
    ISSN: 1573-8507
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract The efficiency of systematic horizontal drainage of irrigated land underlain by saline water is investigated analytically. Quantitative values which make it possible to estimate the influence of the geometric parameters of the drainage system on its efficiency are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01051209
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